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7. DEGRO 2004: 10. Jahreskongress der Deutschen Gesellschaft für Radioonkologie

Author

Wendt, Thomas G., Gademann, G., Pambor, C., Grießbach, I., von Specht, H., Martin, T., Baltas, D., Kurek, R., Röddiger, S., Tunn, U. W., Zamboglou, N., Eich, H. T., Staar, S., Gossmann, A., Hansemann, K., Semrau, R., Skripnitchenko, R., Diehl, V., Müller, R.-P., Sehlen, S., Willich, N., Rühl, U., Lukas, P., Dühmke, E., Engel, K., Tabbert, E., Bolck, M., Knaack, S., Annweiler, H., Krempien, R., Hoppe, H., Harms, W., Daeuber, S., Schorr, O., Treiber, M., Debus, J., Alber, M., Paulsen, F., Birkner, M., Bakai, A., Belka, C., Budach, W., Grosser, K.-H., Kramer, R., Kober, B., Reinert, M., Schneider, P., Hertel, A., Feldmann, H., Csere, P., Hoinkis, C., Rothe, G., Zahn, P., Alheit, H., Cavanaugh, S. X., Kupelian, P., Reddy, C., Pollock, B., Fuss, M., Roeddiger, S., Dannenberg, T., Rogge, B., Drechsler, D., Herrmann, T., Alberti, W., Schwarz, R., Graefen, M., Krüll, A., Rudat, V., Huland, H., Fehr, C., Baum, C., Glocker, S., Nüsslin, F., Heil, T., Lemnitzer, H., Knips, M., Baumgart, O., Thiem, W., Kloetzer, K.-H., Hoffmann, L., Neu, B., Hültenschmidt, B., Sautter-Bihl, M.-L., Micke, O., Seegenschmiedt, M. H., Köppen, D., Klautke, G., Fietkau, R., Schultze, J., Schlichting, G., Koltze, H., Kimmig, B., Glatzel, M., Fröhlich, D., Bäsecke, S., Krauß, A., Strauß, D., Buth, K.-J., Böhme, R., Oehler, W., Bottke, D., Keilholz, U., Heufelder, K., Wiegel, T., Hinkelbein, W., Rödel, C., Papadopoulos, T., Munnes, M., Wirtz, R., Sauer, R., Rödel, F., Lubgan, D., Distel, L., Grabenbauer, G. G., Sak, A., Stüben, G., Pöttgen, C., Grehl, S., Stuschke, M., Müller, K., Pfaffendorf, C., Mayerhofer, A., Köhn, F. M., Ring, J., van Beuningen, D., Meineke, V., Neubauer, S., Keller, U., Wittlinger, M., Riesenbeck, D., Greve, B., Exeler, R., Ibrahim, M., Liebscher, C., Severin, E., Ott, O., Pötter, R., Hammer, J., Hildebrandt, G., Beckmann, M. W., Strnad, V., Fehlauer, F., Tribius, S., Bajrovic, A., Höller, U., Rades, D., Warszawski, A., Baumann, R., Madry-Gevecke, B., Karstens, J. H., Grehn, C., Hensley, F., Berns, C., Wannenmacher, M., Semrau, S., Reimer, T., Gerber, B., Ketterer, P., Koepcke, E., Hänsgen, G., Strauß, H. G., Dunst, J., Füller, J., Kalb, S., Wendt, T., Weitmann, H. D., Waldhäusl, C., Knocke, T.-H., Lamprecht, U., Classen, J., Kaulich, T. W., Aydeniz, B., Bamberg, M., Wiezorek, T., Banz, N., Salz, H., Scheithauer, M., Schwedas, M., Lutterbach, J., Bartelt, S., Frommhold, H., Lambert, J., Hornung, D., Swiderski, S., Walke, M., Siefert, A., Pöllinger, B., Krimmel, K., Schaffer, M., Koelbl, O., Bratengeier, K., Vordermark, D., Flentje, M., Hero, B., Berthold, F., Combs, S. E., Gutwein, S., Schulz-Ertner, D., van Kampen, M., Thilmann, C., Kocher, M., Kunze, S., Schild, S., Ikezaki, K., Müller, B., Sieber, R., Weiß, C., Wolf, I., Wenz, F., Weber, K.-J., Schäfer, J., Engling, A., Laufs, S., Veldwijk, M. R., Milanovic, D., Fleckenstein, K., Zeller, W., Fruehauf, S., Herskind, C., Weinmann, M., Jendrossek, V., Rübe, C., Appold, S., Kusche, S., Hölscher, T., Brüchner, K., Geyer, P., Baumann, M., Kumpf, R., Zimmermann, F., Schill, S., Geinitz, H., Nieder, C., Jeremic, B., Molls, M., Liesenfeld, S., Petrat, H., Hesselmann, S., Schäfer, U., Bruns, F., Horst, E., Wilkowski, R., Assmann, G., Nolte, A., Diebold, J., Löhrs, U., Fritz, P., Hans-Jürgen, K., Mühlnickel, W., Bach, P., Wahlers, B., Kraus, H.-J., Wulf, J., Hädinger, U., Baier, K., Krieger, T., Müller, G., Hof, H., Herfarth, K., Brunner, T., Hahn, S. M., Schreiber, F. S., Rustgi, A. K., McKenna, W. G., Bernhard, E. J., Guckenberger, M., Meyer, K., Willner, J., Schmidt, M., Kolb, M., Li, M., Gong, P., Abdollahi, A., Trinh, T., Huber, P. E., Christiansen, H., Saile, B., Neubauer-Saile, K., Tippelt, S., Rave-Fränk, M., Hermann, R. M., Dudas, J., Hess, C. F., Schmidberger, H., Ramadori, G., Andratschke, N., Price, R., Ang, K.-K., Schwarz, S., Kulka, U., Busch, M., Schlenger, L., Bohsung, J., Eichwurzel, I., Matnjani, G., Sandrock, D., Richter, M., Wurm, R., Budach, V., Feussner, A., Gellermann, J., Jordan, A., Scholz, R., Gneveckow, U., Maier-Hauff, K., Ullrich, R., Wust, P., Felix, R., Waldöfner, N., Seebass, M., Ochel, H.-J., Dani, A., Varkonyi, A., Osvath, M., Szasz, A., Messer, P. M., Blumstein, N. M., Gottfried, H.-W., Schneider, E., Reske, S. N., Röttinger, E. M., Grosu, A.-L., Franz, M., Stärk, S., Weber, W., Heintz, M., Indenkämpen, F., Beyer, T., Lübcke, W., Levegrün, S., Hayen, J., Czech, N., Mbarek, B., Köster, R., Thurmann, H., Todorovic, M., Schuchert, A., Meinertz, T., Münzel, T., Grundtke, H., Hornig, B., Hehr, T., Dilcher, C., Chan, R. C., Mintz, G. S., Kotani, J.-I., Shah, V. M., Canos, D. A., Weissman, N. J., Waksman, R., Wolfram, R., Bürger, B., Schrappe, M., Timmermann, B., Lomax, A., Goitein, G., Schuck, A., Mattke, A., Int-Veen, C., Brecht, I., Bernhard, S., Treuner, J., Koscielniak, E., Heinze, F., Kuhlen, M., von Schorlemer, I., Ahrens, S., Hunold, A., Könemann, S., Winkelmann, W., Jürgens, H., Gerstein, J., Polivka, B., Sykora, K.-W., Bremer, M., Thamm, R., Höpfner, C., Gumprecht, H., Jäger, R., Leonardi, M. A., Frank, A. M., Trappe, A. E., Lumenta, C. B., Östreicher, E., Pinsker, K., Müller, A., Fauser, C., Arnold, W., Henzel, M., Groß, M. W., Engenhart-Cabillic, R., Schüller, P., Palkovic, S., Schröder, J., Wassmann, H., Block, A., Bauer, R., Keffel, F.-W., Theophil, B., Wisser, L., Rogger, M., Niewald, M., van Lengen, V., Mathias, K., Welzel, G., Bohrer, M., Steinvorth, S., Schleußner, C., Leppert, K., Röhrig, B., Strauß, B., van Oorschot, B., Köhler, N., Anselm, R., Winzer, A., Schneider, T., Koch, U., Schönekaes, K., Mücke, R., Büntzel, J., Kisters, K., Scholz, C., Keller, M., Winkler, C., Prause, N., Busch, R., Roth, S., Haas, I., Willers, R., Schultze-Mosgau, S., Wiltfang, J., Kessler, P., Neukam, F. W., Röper, B., Nüse, N., Auer, F., Melzner, W., Geiger, M., Lotter, M., Kuhnt, T., Müller, A. C., Jirsak, N., Gernhardt, C., Schaller, H.-G., Al-Nawas, B., Klein, M. O., Ludwig, C., Körholz, J., Grötz, K. A., Huppers, K., Kunkel, M., Olschewski, T., Bajor, K., Lang, B., Lang, E., Kraus-Tiefenbacher, U., Hofheinz, R., von Gerstenberg-Helldorf, B., Willeke, F., Hochhaus, A., Roebel, M., Oertel, S., Riedl, S., Buechler, M., Foitzik, T., Ludwig, K., Klar, E., Meyer, A., Meier zu Eissen, J., Schwab, D., Meyer, T., Höcht, S., Siegmann, A., Sieker, F., Pigorsch, S., Milicic, B., Acimovic, L., Milisavljevic, S., Radosavljevic-Asic, G., Presselt, N., Baum, R. P., Treutler, D., Bonnet, R., Schmücking, M., Sammour, D., Fink, T., Ficker, J., Pradier, O., Lederer, K., Weiss, E., Hille, A., Welz, S., Sepe, S., Friedel, G., Spengler, W., Susanne, E., Kölbl, O., Hoffmann, W., Wörmann, B., Günther, A., Becker-Schiebe, M., Güttler, J., Schul, C., Nitsche, M., Körner, M. K., Oppenkowski, R., Guntrum, F., Malaimare, L., Raub, M., Schöfl, C., Averbeck, T., Hacker, I., Blank, H., Böhme, C., Imhoff, D., Eberlein, K., Weidauer, S., Böttcher, H. D., Edler, L., Tatagiba, M., Molina, H., Ostertag, C., Milker-Zabel, S., Zabel, A., Schlegel, W., Hartmann, A., Wildfang, I., Kleinert, G., Hamm, K., Reuschel, W., Wehrmann, R., Kneschaurek, P., Münter, M. W., Nikoghosyan, A., Didinger, B., Nill, S., Rhein, B., Küstner, D., Schalldach, U., Eßer, D., Göbel, H., Wördehoff, H., Pachmann, S., Hollenhorst, H., Dederer, K., Evers, C., Lamprecht, J., Dastbaz, A., Schick, B., Fleckenstein, J., Plinkert, P. K., Rübe, Chr., Merz, T., Sommer, B., Mencl, A., Ghilescu, V., Astner, S., Martin, A., Momm, F., Volegova-Neher, N. J., Schulte-Mönting, J., Guttenberger, R., Buchali, A., Blank, E., Sidow, D., Huhnt, W., Gorbatov, T., Heinecke, A., Beckmann, G., Bentia, A.-M., Schmitz, H., Spahn, U., Heyl, V., Prott, P.-J., Galalae, R., Schneider, R., Voith, C., Scheda, A., Hermann, B., Bauer, L., Melchert, F., Kröger, N., Grüneisen, A., Jänicke, F., Zander, A., Zuna, I., Schlöcker, I., Wagner, K., John, E., Dörk, T., Lochhas, G., Houf, M., Lorenz, D., Link, K.-H., Prott, F.-J., Thoma, M., Schauer, R., Heinemann, V., Romano, M., Reiner, M., Quanz, A., Oppitz, U., Bahrehmand, R., Tine, M., Naszaly, A., Patonay, P., Mayer, Á., Markert, K., Mai, S.-K., Lohr, F., Dobler, B., Pinkawa, M., Fischedick, K., Treusacher, P., Cengiz, D., Mager, R., Borchers, H., Jakse, G., Eble, M. J., Asadpour, B., Krenkel, B., Holy, R., Kaplan, Y., Block, T., Czempiel, H., Haverkamp, U., Prümer, B., Christian, T., Benkel, P., Weber, C., Gruber, S., Reimann, P., Blumberg, J., Krause, K., Fischedick, A.-R., Kaube, K., Steckler, K., Henzel, B., Licht, N., Loch, T., Krystek, A., Lilienthal, A., Alfia, H., Claßen, J., Spillner, P., Knutzen, B., Souchon, R., Schulz, I., Grüschow, K., Küchenmeister, U., Vogel, H., Wolff, D., Ramm, U., Licner, J., Rudolf, F., Moog, J., Rahl, C. G., Mose, S., Vorwerk, H., Weiß, E., Engert, A., Seufert, I., Schwab, F., Dahlke, J., Zabelina, T., Krüger, W., Kabisch, H., Platz, V., Wolf, J., Pfistner, B., Stieltjes, B., Wilhelm, T., Schmuecking, M., Junker, K., Treutier, D., Schneider, C. P., Leonhardi, J., Niesen, A., Hoeffken, K., Schmidt, A., Mueller, K.-M., Schmid, I., Lehmann, K., Blumstein, C. G., Kreienberg, R., Freudenberg, L., Kühl, H., Stahl, M., Elo, B., Erichsen, P., Stattaus, H., Welzel, T., Mende, U., Heiland, S., Salter, B. J., Schmid, R., Stratakis, D., Huber, R. M., Haferanke, J., Zöller, N., Henke, M., Lorenzen, J., Grzyska, B., Kuhlmey, A., Adam, G., Hamelmann, V., Bölling, T., Job, H., Panke, J. E., Feyer, P., Püttmann, S., Siekmeyer, B., Jung, H., Gagel, B., Militz, U., Piroth, M., Schmachtenberg, A., Hoelscher, T., Verfaillie, C., Kaminski, B., Lücke, E., Mörtel, H., Eyrich, W., Fritsch, M., Georgi, J.-C., Plathow, C., Zieher, H., Kiessling, F., Peschke, P., Kauczor, H.-U., Licher, J., Schneider, O., Henschler, R., Seidel, C., Kolkmeyer, A., Nguyen, T. P., Janke, K., Michaelis, M., Bischof, M., Stoffregen, C., Lipson, K., Weber, K., Ehemann, V., Jürgen, D., Achanta, P., Thompson, K., Martinez, J. L., Körschgen, T., Pakala, R., Pinnow, E., Hellinga, D., O’Tio, F., Katzer, A., Kaffer, A., Kuechler, A., Steinkirchner, S., Dettmar, N., Cordes, N., Frick, S., Kappler, M., Taubert, H., Bartel, F., Schmidt, H., Bache, M., Frühauf, S., Wenk, T., Litzenberger, K., Erren, M., van Valen, F., Liu, L., Yang, K., Palm, J., Püsken, M., Behe, M., Behr, T. M., Marini, P., Johne, A., Claussen, U., Liehr, T., Steil, V., Moustakis, C., Griessbach, I., Oettel, A., Schaal, C., Reinhold, M., Strasssmann, G., Braun, I., Vacha, P., Richter, D., Osterham, T., Wolf, P., Guenther, G., Miemietz, M., Lazaridis, E. A., Forthuber, B., Sure, M., Klein, J., Saleske, H., Riedel, T., Hirnle, P., Horstmann, G., Schoepgens, H., Van Eck, A., Bundschuh, O., Van Oosterhut, A., Xydis, K., Theodorou, K., Kappas, C., Zurheide, J., Fridtjof, N., Ganswindt, U., Weidner, N., Buchgeister, M., Weigel, B., Müller, S. B., Glashörster, M., Weining, C., Hentschel, B., Sauer, O. A., Kleen, W., Beck, J., Lehmann, D., Ley, S., Fink, C., Puderbach, M., Hosch, W., Schmähl, A., Jung, K., Stoßberg, A., Rolf, E., Damrau, M., Oetzel, D., Maurer, U., Maurer, G., Lang, K., Zumbe, J., Hahm, D., Fees, H., Robrandt, B., Melcher, U., Niemeyer, M., Mondry, A., Kanellopoulos-Niemeyer, V., Karle, H., Jacob-Heutmann, D., Born, C., Mohr, W., Kutzner, J., Thelen, M., Schiebe, M., Pinkert, U., Piasswilm, L., Pohl, F., Garbe, S., Wolf, K., Nour, Y., Barwig, P., Trog, D., Schäfer, C., Herbst, M., Dietl, B., Cartes, M., Schroeder, F., Sigingan-Tek, G., Feierabend, R., Theden, S., Schlieck, A., Gotthardt, M., Glowalla, U., Kremp, S., Hamid, O., Riefenstahl, N., Michaelis, B., Schaal, G., Liebermeister, E., Niewöhner-Desbordes, U., Kowalski, M., Franz, N., Stahl, W., Baumbach, C., Thale, J., Wagner, W., Justus, B., Huston, A. L., Seaborn, R., Rai, P., Rha, S.-W., Sakas, G., Wesarg, S., Zogal, P., Schwald, B., Seibert, H., Berndt-Skorka, R., Seifert, G., Schoenekaes, K., Bilecen, C., Ito, W., Matschuck, G., and Isik, D.

Published
2004
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13. Fully automated, multi-criterial planning for Volumetric Modulated Arc Therapy – An international multi-center validation for prostate cancer

Author

Heijmen, B, Voet, P, Fransen, D, Penninkhof, J, Milder, M, Akhiat, H, Bonomo, Pierluigi, Casati, Marta, Georg, D, Goldner, G, Henry, A, Lilley, J, Lohr, F, Marrazzo, Livia, Pallotta, Stefania, Pellegrini, R, Seppenwoolde, Y, Simontacchi, Gabriele, Steil, V, Stieler, F, Wilson, S, and Breedveld, S

Subjects
Automated multi-criterial treatment planning, Knowledge-based planning, Multi-center validation, Prostate, VMAT
Published
2018

17. OC-0299: Inconsistencies in clinicians‘ final treatment plan evaluations – a need for automation support

Author

Heijmen, B., primary, Bonomo, P., additional, Goldner, G., additional, Henry, A., additional, Lohr, F., additional, Simontacchi, G., additional, Voet, P., additional, Fransen, D., additional, Penninkhof, J., additional, Milder, M., additional, Akhiat, A., additional, Casati, M., additional, Georg, D., additional, Lilley, J., additional, Marrazzo, L., additional, Pallotta, S., additional, Pellegrini, R., additional, Seppenwoolde, Y., additional, Steil, V., additional, Stieler, F., additional, Wilson, S., additional, and Breedveld, S., additional

Published
2018
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18. Technical Report Scintigraphic Evaluation of Bone Formation in Göttingen Minipigs

Author

Schwarz, M L, Seidling, R, Mauermann, E, Werner, A, Steil, V, Forsch, E, Obertacke, U, Becker, K, and Lehmann, L

Abstract

In experiments and processes requiring the application of nuclear tracers in large animals, statutory provisions and safety standards as well as a variety of techniques have to be regarded and employed. In order to sufficiently analyze questions pertaining to osseointegration as well as the possibility of ectopic bone formation in Göttingen minipigs, we decided to use scintigraphic examinations using 99mTc-HDP (Technetium - hydroxymethane diphosphonate). In this study, metallic implants coated in different forms with rhBMP-2 (recombinant human bone morphogenetic protein-2) were surgically introduced into the pigs’ femora. A total of 26 adult female minipigs (Ellegard, Dalmose, Denmark) averaging 40 months in age were post-surgically evaluated through the application of a radionuclide and its subsequent distribution using a scintillation camera. Each animal received approximately 10 MBq/kg BW (mega Becquerel per kilogram bodyweight). This paper describes the procedures of anaesthesia, the quite challenging transvaginal- urethral catheterization, the application of a catheter in the jugular vein, the radionuclide injection and the disposal of the sacrificed animals under statutory provisions and safety standards. The technical report reveals that the scintigraphic evaluation in large animal experiments is a practicable – yet sophisticated – method of examination and also strives to encourage further research groups to implement this elegant procedure., Scandinavian Journal of Laboratory Animal Sciences, Vol 37, No 1 (2010)

Published
2014
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19. OC-0268: Fully automated VMAT plan generation – an international multi-institutional validation study

Author

Heijmen, B., primary, Voet, P., additional, Fransen, D., additional, Akhiat, H., additional, Bonomo, P., additional, Casati, M., additional, Georg, D., additional, Goldner, G., additional, Henry, A., additional, Lilley, J., additional, Lohr, F., additional, Marrazzo, L., additional, Milder, M., additional, Pallotta, S., additional, Penninkhof, J., additional, Seppenwoolde, Y., additional, Simontacchi, G., additional, Steil, V., additional, Stieler, F., additional, Wilson, S., additional, Pellegrini, R., additional, and Breedveld, S., additional

Published
2016
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21. [Current requirements for image management in radiotherapy]

Author

Steil, V, Rohner, F, Schneider, F, Wenz, F, Lohr, F, and Weisser, G

Subjects
Adult, Aged, 80 and over, Male, Quality Assurance, Health Care, Information Management, Radiotherapy Planning, Computer-Assisted, Middle Aged, Radiographic Image Enhancement, Young Adult, Radiology Information Systems, Germany, Neoplasms, Humans, Female, Aged, Radiotherapy, Image-Guided
Abstract

Treatment techniques of increasing complexity such as dynamic/rotational techniques mandate digital management and increasingly image guidance. This constantly increases requirements for image management and archiving. This article discusses the current status of these requirements and will present potential image administration strategies.Fundamentals of image administration and storage/archiving are presented (DICOM Standard, radiotherapy-specific issues) along the typical patient pathway (demographic data, radiotherapy treatment planning, signatures/approval of plan and image data, archiving of plan and image data). Different strategies for image management are presented (archiving centered on individual application vs. integral approach with central archiving in a DICOM-RT-PACS governed by a radiation oncology information system (ROCIS)). Infrastructural requirements depending on the amount of image data generated in the department are discussed.Application-centered image management provides access to image data including all relevant RT-specific elements. This approach, however, is not migration-safe, requires significant administrative work to ensure a redundancy level that protects against data loss and does not provide datasets that are linked to respective therapeutic interventions. Therefore, centralized image management and archiving that links images to patients and individual steps in the treatment pathway within a standardized DICOM(-RT) environment is preferable despite occasional problems with visualization of specific data elements.

Published
2011

22. Ultra-fast high resolution cerebral artery micro-CTA in living mice

Author

Schambach, S, Bag, S, Steil, V, Isaza, C, Groden, C, Schilling, L, and Brockmann, M

Subjects
ddc: 610, cardiovascular diseases, 610 Medical sciences, Medicine
Abstract

Objective: Animal models are frequently used in preclinical stroke research. Investigations of the status of cerebral vasculature in small rodents are of special interest in settings like experimental stroke or vasospasm. Because of their small caliber, in vivo imaging of the cerebrovasculature is extremely[for full text, please go to the a.m. URL], 60. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit den Benelux-Ländern und Bulgarien

Published
2009
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37. 2025

Author

Kraus-Tiefenbacher, U., primary, Bauer, L., additional, Scheda, A., additional, Fleckenstein, K., additional, Keller, A., additional, Herskind, C., additional, Steil, V., additional, Melchert, F., additional, and Wenz, F., additional

Published
2006
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39. DEGRO 2004

Author

Wendt, Thomas G., primary, Gademann, G., additional, Pambor, C., additional, Grießbach, I., additional, von Specht, H., additional, Martin, T., additional, Baltas, D., additional, Kurek, R., additional, Röddiger, S., additional, Tunn, U. W., additional, Zamboglou, N., additional, Eich, H. T., additional, Staar, S., additional, Gossmann, A., additional, Hansemann, K., additional, Semrau, R., additional, Skripnitchenko, R., additional, Diehl, V., additional, Müller, R.-P., additional, Sehlen, S., additional, Willich, N., additional, Rühl, U., additional, Lukas, P., additional, Dühmke, E., additional, Engel, K., additional, Tabbert, E., additional, Bolck, M., additional, Knaack, S., additional, Annweiler, H., additional, Krempien, R., additional, Hoppe, H., additional, Harms, W., additional, Daeuber, S., additional, Schorr, O., additional, Treiber, M., additional, Debus, J., additional, Alber, M., additional, Paulsen, F., additional, Birkner, M., additional, Bakai, A., additional, Belka, C., additional, Budach, W., additional, Grosser, K.-H., additional, Kramer, R., additional, Kober, B., additional, Reinert, M., additional, Schneider, P., additional, Hertel, A., additional, Feldmann, H., additional, Csere, P., additional, Hoinkis, C., additional, Rothe, G., additional, Zahn, P., additional, Alheit, H., additional, Cavanaugh, S. X., additional, Kupelian, P., additional, Reddy, C., additional, Pollock, B., additional, Fuss, M., additional, Roeddiger, S., additional, Dannenberg, T., additional, Rogge, B., additional, Drechsler, D., additional, Herrmann, T., additional, Alberti, W., additional, Schwarz, R., additional, Graefen, M., additional, Krüll, A., additional, Rudat, V., additional, Huland, H., additional, Fehr, C., additional, Baum, C., additional, Glocker, S., additional, Nüsslin, F., additional, Heil, T., additional, Lemnitzer, H., additional, Knips, M., additional, Baumgart, O., additional, Thiem, W., additional, Kloetzer, K.-H., additional, Hoffmann, L., additional, Neu, B., additional, Hültenschmidt, B., additional, Sautter-Bihl, M.-L., additional, Micke, O., additional, Seegenschmiedt, M. H., additional, Köppen, D., additional, Klautke, G., additional, Fietkau, R., additional, Schultze, J., additional, Schlichting, G., additional, Koltze, H., additional, Kimmig, B., additional, Glatzel, M., additional, Fröhlich, D., additional, Bäsecke, S., additional, Krauß, A., additional, Strauß, D., additional, Buth, K.-J., additional, Böhme, R., additional, Oehler, W., additional, Bottke, D., additional, Keilholz, U., additional, Heufelder, K., additional, Wiegel, T., additional, Hinkelbein, W., additional, Rödel, C., additional, Papadopoulos, T., additional, Munnes, M., additional, Wirtz, R., additional, Sauer, R., additional, Rödel, F., additional, Lubgan, D., additional, Distel, L., additional, Grabenbauer, G. G., additional, Sak, A., additional, Stüben, G., additional, Pöttgen, C., additional, Grehl, S., additional, Stuschke, M., additional, Müller, K., additional, Pfaffendorf, C., additional, Mayerhofer, A., additional, Köhn, F. 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J., additional, Schmid, R., additional, Stratakis, D., additional, Huber, R. M., additional, Haferanke, J., additional, Zöller, N., additional, Henke, M., additional, Lorenzen, J., additional, Grzyska, B., additional, Kuhlmey, A., additional, Adam, G., additional, Hamelmann, V., additional, Bölling, T., additional, Job, H., additional, Panke, J. E., additional, Feyer, P., additional, Püttmann, S., additional, Siekmeyer, B., additional, Jung, H., additional, Gagel, B., additional, Militz, U., additional, Piroth, M., additional, Schmachtenberg, A., additional, Hoelscher, T., additional, Verfaillie, C., additional, Kaminski, B., additional, Lücke, E., additional, Mörtel, H., additional, Eyrich, W., additional, Fritsch, M., additional, Georgi, J.-C., additional, Plathow, C., additional, Zieher, H., additional, Kiessling, F., additional, Peschke, P., additional, Kauczor, H.-U., additional, Licher, J., additional, Schneider, O., additional, Henschler, R., additional, Seidel, C., additional, Kolkmeyer, A., additional, Nguyen, T. P., additional, Janke, K., additional, Michaelis, M., additional, Bischof, M., additional, Stoffregen, C., additional, Lipson, K., additional, Weber, K., additional, Ehemann, V., additional, Jürgen, D., additional, Achanta, P., additional, Thompson, K., additional, Martinez, J. L., additional, Körschgen, T., additional, Pakala, R., additional, Pinnow, E., additional, Hellinga, D., additional, O’Tio, F., additional, Katzer, A., additional, Kaffer, A., additional, Kuechler, A., additional, Steinkirchner, S., additional, Dettmar, N., additional, Cordes, N., additional, Frick, S., additional, Kappler, M., additional, Taubert, H., additional, Bartel, F., additional, Schmidt, H., additional, Bache, M., additional, Frühauf, S., additional, Wenk, T., additional, Litzenberger, K., additional, Erren, M., additional, van Valen, F., additional, Liu, L., additional, Yang, K., additional, Palm, J., additional, Püsken, M., additional, Behe, M., additional, Behr, T. 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A., additional, Forthuber, B., additional, Sure, M., additional, Klein, J., additional, Saleske, H., additional, Riedel, T., additional, Hirnle, P., additional, Horstmann, G., additional, Schoepgens, H., additional, Van Eck, A., additional, Bundschuh, O., additional, Van Oosterhut, A., additional, Xydis, K., additional, Theodorou, K., additional, Kappas, C., additional, Zurheide, J., additional, Fridtjof, N., additional, Ganswindt, U., additional, Weidner, N., additional, Buchgeister, M., additional, Weigel, B., additional, Müller, S. B., additional, Glashörster, M., additional, Weining, C., additional, Hentschel, B., additional, Sauer, O. A., additional, Kleen, W., additional, Beck, J., additional, Lehmann, D., additional, Ley, S., additional, Fink, C., additional, Puderbach, M., additional, Hosch, W., additional, Schmähl, A., additional, Jung, K., additional, Stoßberg, A., additional, Rolf, E., additional, Damrau, M., additional, Oetzel, D., additional, Maurer, U., additional, Maurer, G., additional, Lang, K., additional, Zumbe, J., additional, Hahm, D., additional, Fees, H., additional, Robrandt, B., additional, Melcher, U., additional, Niemeyer, M., additional, Mondry, A., additional, Kanellopoulos-Niemeyer, V., additional, Karle, H., additional, Jacob-Heutmann, D., additional, Born, C., additional, Mohr, W., additional, Kutzner, J., additional, Thelen, M., additional, Schiebe, M., additional, Pinkert, U., additional, Piasswilm, L., additional, Pohl, F., additional, Garbe, S., additional, Wolf, K., additional, Nour, Y., additional, Barwig, P., additional, Trog, D., additional, Schäfer, C., additional, Herbst, M., additional, Dietl, B., additional, Cartes, M., additional, Schroeder, F., additional, Sigingan-Tek, G., additional, Feierabend, R., additional, Theden, S., additional, Schlieck, A., additional, Gotthardt, M., additional, Glowalla, U., additional, Kremp, S., additional, Hamid, O., additional, Riefenstahl, N., additional, Michaelis, B., additional, Schaal, G., additional, Liebermeister, E., additional, Niewöhner-Desbordes, U., additional, Kowalski, M., additional, Franz, N., additional, Stahl, W., additional, Baumbach, C., additional, Thale, J., additional, Wagner, W., additional, Justus, B., additional, Huston, A. L., additional, Seaborn, R., additional, Rai, P., additional, Rha, S.-W., additional, Sakas, G., additional, Wesarg, S., additional, Zogal, P., additional, Schwald, B., additional, Seibert, H., additional, Berndt-Skorka, R., additional, Seifert, G., additional, Schoenekaes, K., additional, Bilecen, C., additional, Ito, W., additional, Matschuck, G., additional, and Isik, D., additional

Published
2004
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44. A fast radiotherapy paradigm for anal cancer with volumetric modulated arc therapy (VMAT).

Author

Stieler F, Wolff D, Lohr F, Steil V, Abo-Madyan Y, Lorenz F, Wenz F, Mai S, Stieler, Florian, Wolff, Dirk, Lohr, Frank, Steil, Volker, Abo-Madyan, Yasser, Lorenz, Friedlieb, Wenz, Frederik, and Mai, Sabine

Abstract

Background/purpose: Radiotherapy (RT) volumes for anal cancer are large and of moderate complexity when organs at risk (OAR) such as testis, small bowel and bladder are at least partially to be shielded. Volumetric intensity modulated arc therapy (VMAT) might provide OAR-shielding comparable to step-and-shoot intensity modulated radiotherapy (IMRT) for this tumor entity with better treatment efficiency.Materials and Methods: Based on treatment planning CTs of 8 patients, we compared dose distributions, comformality index (CI), homogeneity index (HI), number of monitor units (MU) and treatment time (TTT) for plans generated for VMAT, 3D-CRT and step-and-shoot-IMRT (optimized based on Pencil Beam (PB) or Monte Carlo (MC) dose calculation) for typical anal cancer planning target volumes (PTV) including inguinal lymph nodes as usually treated during the first phase (0-36 Gy) of a shrinking field regimen.Results: With values of 1.33 +/- 0.21/1.26 +/- 0.05/1.3 +/- 0.02 and 1.39 +/- 0.09, the CI's for IMRT (PB-Corvus/PB-Hyperion/MC-Hyperion) and VMAT are better than for 3D-CRT with 2.00 +/- 0.16. The HI's for the prescribed dose (HI36) for 3D-CRT were 1.06 +/- 0.01 and 1.11 +/- 0.02 for VMAT, respectively and 1.15 +/- 0.02/1.10 +/- 0.02/1.11 +/- 0.08 for IMRT (PB-Corvus/PB-Hyperion/MC-Hyperion). Mean TTT and MU's for 3D-CRT is 220s/225 +/- 11MU and for IMRT (PB-Corvus/PB-Hyperion/MC-Hyperion) is 575s/1260 +/- 172MU, 570s/477 +/- 84MU and 610s748 +/- 193MU while TTT and MU for two-arc-VMAT is 290s/268 +/- 19MU.Conclusion: VMAT provides treatment plans with high conformity and homogeneity equivalent to step-and-shoot-IMRT for this mono-concave treatment volume. Short treatment delivery time and low primary MU are the most important advantages. [ABSTRACT FROM AUTHOR]

Published
2009
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46. A novel end-to-end test for combined dosimetric and geometric treatment verification using a 3D-printed phantom.

Author

Mertens L, Fleckenstein J, Steil V, and Schneider F

Subjects
Humans, Phantoms, Imaging, Printing, Three-Dimensional, Radiometry, Particle Accelerators, Radiotherapy Planning, Computer-Assisted methods
Abstract

The dosimetric and geometric accuracy are important components to ensure safe patient treatment in radiation therapy. Therefore, these components must be checked during quality control. This work presents a possible solution for the determination of the geometric isocenter deviation in the entire treatment chain. Additionally, the dose measurement of the established end-to-end test workflow measured in the same procedure as the geometric deviation is described. An in-house designed end-to-end test phantom went through the entire procedure of a standard patient treatment and the dosimetric and geometric accuracy were determined. At 3 linear accelerators (linac), the phantom was positioned either with cone beam computed tomography or with surface guidance. In this position, a Winston-Lutz test was performed and the deviations of the gantry, collimator and couch isocenter measurements to the phantom position were determined. Additionally, a dose measurement in the phantom was performed and compared to the dose predicted in the treatment planning system. To validate the results obtained with the in-house designed phantom, comparative measurements with commercial phantoms were performed. According to the performed end-to-end test, 2 out of the 3 linacs showed isocenter variations larger than 1 mm for collimator and gantry rotations and larger than 2 mm for couch rotations. With an isocenter variation of less than 1 mm for collimator and gantry rotations, 1 linac fulfilled the tolerance for stereotactic treatments without couch rotation. With couch rotation, an isocenter variation of less than 2 mm was detected at this linac, which fulfilled the tolerance for IMRT treatments. The mean dose deviation between measurement and treatment planning system was 1.82% ± 1.03%. The results acquired with the UMM phantom did not show statistically significant deviations to those acquired with relevant other commercial phantoms. The novel end-to-end test procedure allows for a combined dosimetric and geometric treatment evaluation. Besides the commonly performed dose end-to-end test the geometric isocenter deviation within a patient treatment workflow was evaluated and categorized for IMRT or SBRT., (Copyright © 2022 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved.)

Published
2022
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47. Dosimetric benefits of daily treatment plan adaptation for prostate cancer stereotactic body radiotherapy.

Author

Eckl M, Sarria GR, Springer S, Willam M, Ruder AM, Steil V, Ehmann M, Wenz F, and Fleckenstein J

Subjects
Aged, Aged, 80 and over, Follow-Up Studies, Humans, Image Processing, Computer-Assisted methods, Male, Middle Aged, Prognosis, Prostatic Neoplasms diagnostic imaging, Prostatic Neoplasms pathology, Radiotherapy Dosage, Radiotherapy, Intensity-Modulated methods, Retrospective Studies, Tomography, X-Ray Computed methods, Organs at Risk radiation effects, Prostatic Neoplasms surgery, Radiosurgery methods, Radiotherapy Planning, Computer-Assisted methods, Surgery, Computer-Assisted methods
Abstract

Background: Hypofractionation is increasingly being applied in radiotherapy for prostate cancer, requiring higher accuracy of daily treatment deliveries than in conventional image-guided radiotherapy (IGRT). Different adaptive radiotherapy (ART) strategies were evaluated with regard to dosimetric benefits., Methods: Treatments plans for 32 patients were retrospectively generated and analyzed according to the PACE-C trial treatment scheme (40 Gy in 5 fractions). Using a previously trained cycle-generative adversarial network algorithm, synthetic CT (sCT) were generated out of five daily cone-beam CT. Dose calculation on sCT was performed for four different adaptation approaches: IGRT without adaptation, adaptation via segment aperture morphing (SAM) and segment weight optimization (ART1) or additional shape optimization (ART2) as well as a full re-optimization (ART3). Dose distributions were evaluated regarding dose-volume parameters and a penalty score., Results: Compared to the IGRT approach, the ART1, ART2 and ART3 approaches substantially reduced the V 37Gy (bladder) and V 36Gy (rectum) from a mean of 7.4cm 3 and 2.0cm 3 to (5.9cm 3 , 6.1cm 3 , 5.2cm 3 ) as well as to (1.4cm 3 , 1.4cm 3 , 1.0cm 3 ), respectively. Plan adaptation required on average 2.6 min for the ART1 approach and yielded doses to the rectum being insignificantly different from the ART2 approach. Based on an accumulation over the total patient collective, a penalty score revealed dosimetric violations reduced by 79.2%, 75.7% and 93.2% through adaptation., Conclusion: Treatment plan adaptation was demonstrated to adequately restore relevant dose criteria on a daily basis. While for SAM adaptation approaches dosimetric benefits were realized through ensuring sufficient target coverage, a full re-optimization mainly improved OAR sparing which helps to guide the decision of when to apply which adaptation strategy., (© 2021. The Author(s).)

Published
2021
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48. Evaluation of a cycle-generative adversarial network-based cone-beam CT to synthetic CT conversion algorithm for adaptive radiation therapy.

Author

Eckl M, Hoppen L, Sarria GR, Boda-Heggemann J, Simeonova-Chergou A, Steil V, Giordano FA, and Fleckenstein J

Subjects
Algorithms, Cone-Beam Computed Tomography, Humans, Male, Radiometry, Radiotherapy Dosage, Image Processing, Computer-Assisted, Radiotherapy Planning, Computer-Assisted
Abstract

Purpose: Image-guided radiation therapy could benefit from implementing adaptive radiation therapy (ART) techniques. A cycle-generative adversarial network (cycle-GAN)-based cone-beam computed tomography (CBCT)-to-synthetic CT (sCT) conversion algorithm was evaluated regarding image quality, image segmentation and dosimetric accuracy for head and neck (H&N), thoracic and pelvic body regions., Methods: Using a cycle-GAN, three body site-specific models were priorly trained with independent paired CT and CBCT datasets of a kV imaging system (XVI, Elekta). sCT were generated based on first-fraction CBCT for 15 patients of each body region. Mean errors (ME) and mean absolute errors (MAE) were analyzed for the sCT. On the sCT, manually delineated structures were compared to deformed structures from the planning CT (pCT) and evaluated with standard segmentation metrics. Treatment plans were recalculated on sCT. A comparison of clinically relevant dose-volume parameters (D 98 , D 50 and D 2 of the target volume) and 3D-gamma (3%/3mm) analysis were performed., Results: The mean ME and MAE were 1.4, 29.6, 5.4 Hounsfield units (HU) and 77.2, 94.2, 41.8 HU for H&N, thoracic and pelvic region, respectively. Dice similarity coefficients varied between 66.7 ± 8.3% (seminal vesicles) and 94.9 ± 2.0% (lungs). Maximum mean surface distances were 6.3 mm (heart), followed by 3.5 mm (brainstem). The mean dosimetric differences of the target volumes did not exceed 1.7%. Mean 3D gamma pass rates greater than 97.8% were achieved in all cases., Conclusions: The presented method generates sCT images with a quality close to pCT and yielded clinically acceptable dosimetric deviations. Thus, an important prerequisite towards clinical implementation of CBCT-based ART is fulfilled., (Copyright © 2020 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.)

Published
2020
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49. Ultrafast single breath-hold cone-beam CT lung cancer imaging with faster linac gantry rotation.

Author

Arns A, Wertz H, Boda-Heggemann J, Schneider F, Blessing M, Abo-Madyan Y, Steil V, Wenz F, and Fleckenstein J

Subjects
Humans, Lung Neoplasms diagnostic imaging, Particle Accelerators, Phantoms, Imaging, Radiotherapy Dosage, Rotation, Breath Holding, Cone-Beam Computed Tomography methods, Lung Neoplasms radiotherapy, Radiotherapy, Image-Guided methods
Abstract

Purpose: Lung tumors treated with hypo-fractionated deep-inspiration breath-hold stereotactic body radiotherapy benefit from fast imaging and treatment. Single breath-hold cone-beam-CT (CBCT) could reduce motion artifacts and improve treatment precision. Thus, gantry speed was accelerated to 18°/s, limiting acquisition time to 10-20 s. Image quality, dosimetry and registration accuracy were compared with standard-CBCT (3°/s)., Methods and Materials: For proof-of-concept, image quality was analyzed following customer acceptance tests, CT-dose index measured, and registration accuracy determined with an off-centered ball-bearing-phantom. A lung-tumor patient was simulated with differently shaped tumor-mimicking inlays in a thorax-phantom. Signal-to-noise-ratio, contrast-to-noise-ratio and geometry of the inlays quantified image quality. Dose was measured in representative positions. Registration accuracy was determined with inlays scanned in pre-defined positions. Manual, automatic (clinical software) and objective-automatic (in-house-developed) registration was performed on planning-CT, offsets between results and applied shifts were compared., Results: Image quality of ultrafast-CBCT was adequate for high-contrast areas, despite contrast-reduction of ∼80% due to undersampling. Dose-output was considerably reduced by 60-83% in presented setup; variations are due to gantry-braking characteristics. Registration accuracy was maintained better than 1 mm, mean displacement errors were 0.0 ± 0.2 mm with objective-automatic registration. Ultrafast-CBCT showed no significant registration differences to standard-CBCT., Conclusions: This study of first tests with faster gantry rotation of 18°/s showed promising results for ultrafast high-contrast lung tumor CBCT imaging within single breath-hold of 10-20 s. Such fast imaging times, in combination with fast treatment delivery, could pave the way for intra-fractional combined imaging and treatment within one breath-hold phase, and thus mitigate residual motion and increase treatment accuracy and patient comfort. Even generally speaking, faster gantry rotation could set a benchmark with immense clinical impact where time matters most: palliative patient care, general reduction in uncertainty, and increase in patient throughput especially important for emerging markets with high patient numbers., (Copyright © 2019 Elsevier B.V. All rights reserved.)

Published
2019
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50. Radiation-induced optic neuropathy after stereotactic and image guided intensity-modulated radiation therapy (IMRT).

Author

Brecht S, Boda-Heggemann J, Budjan J, Siebenlist K, Stieler F, Steil V, Wenz F, Lohr F, and Buergy D

Subjects
Adolescent, Adult, Aged, Aged, 80 and over, Child, Female, Glioblastoma radiotherapy, Head and Neck Neoplasms radiotherapy, Humans, Male, Meningeal Neoplasms radiotherapy, Meningioma radiotherapy, Middle Aged, Optic Nerve radiation effects, Radiotherapy Planning, Computer-Assisted methods, Radiotherapy, Image-Guided adverse effects, Radiotherapy, Image-Guided methods, Radiotherapy, Intensity-Modulated methods, Retrospective Studies, Squamous Cell Carcinoma of Head and Neck radiotherapy, Visual Pathways radiation effects, Young Adult, Neoplasms radiotherapy, Optic Nerve Diseases etiology, Radiation Injuries etiology, Radiosurgery adverse effects, Radiotherapy, Intensity-Modulated adverse effects
Abstract

Background/purpose: To quantify the risk of radiation-induced optic neuropathy (RION) after stereotactic/image-guided positioning and intensity-modulated radiotherapy (IMRT) with ≥50 Gy to the anterior visual pathway (AVP)., Methods: Patients irradiated with ≥50 Gy to the AVP using stereotactic/image-guided positioning between 2002 and 2011 in Mannheim were identified. Detailed dosimetric data were collected and patients or family members were retrospectively asked to rate visual acuity and visual disorders., Results: 125 patients fulfilled the eligibility criteria. Average maximum equivalent point dose (D max -EQD-2 [α/β=1.6] ) to the AVP was 53.1 ± 3.9 Gy. 99 patients received ≥50 Gy bilaterally (chiasm or both optic nerves), resulting in 224 (99x2 bilateral plus 26 unilateral) visual-fields-at-risk (VFAR) for RION. Eighty-two patients provided pre/post-IMRT visual status information (n = 151 VFARs). Permanent visual deterioration occurred in 18 (22%) patients. In seven, visual deterioration was possibly related to radiotherapy (two-sided deterioration in one patient) for a crude incidence of 8.5% (7/82 patients) and 5.3% (8/151 VFARs). Two cases were caused by chronic keratitis/conjunctivitis; in five patients RION could not be excluded (one two-sided). In one of 13 patients with D max -EQD-2 > 58 Gy, RION could not be excluded. In all affected patients, visual acuity post-IMRT had decreased only mildly (1-2 points on the 5-point-scale). One patient with relevant baseline visual impairment (3/5) developed unilateral blindness (crude incidence of blindness on patient-/VFAR-level: 1.2% and 0.66%; competing risk-adjusted/actuarial 24-month incidence: patient/VFAR-level: 1.8% and 0.95%)., Conclusion: Risk of RION was low in this cohort with accurate positioning and precise dosimetric information. Less conservative tolerance doses may be considered in patients with high risk of recurrence., (Copyright © 2019 Elsevier B.V. All rights reserved.)

Published
2019
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