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314 results on '"Kraff, Oliver"'

6. The traveling heads 2.0: Multicenter reproducibility of quantitative imaging methods at 7 Tesla

Author

Voelker, Maximilian N., Kraff, Oliver, Goerke, Steffen, Laun, Frederik B., Hanspach, Jannis, Pine, Kerrin J., Ehses, Philipp, Zaiss, Moritz, Liebert, Andrzej, Straub, Sina, Eckstein, Korbinian, Robinson, Simon, Nagel, Armin N., Stefanescu, Maria R., Wollrab, Astrid, Klix, Sabrina, Felder, Jörg, Hock, Michael, Bosch, Dario, Weiskopf, Nikolaus, Speck, Oliver, Ladd, Mark E., and Quick, Harald H.

Published
2021
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7. European Ultrahigh-Field Imaging Network for Neurodegenerative Diseases (EUFIND)

Author

Düzel, Emrah, Acosta-Cabronero, Julio, Berron, David, Biessels, Geert Jan, Björkman-Burtscher, Isabella, Bottlaender, Michel, Bowtell, Richard, Buchem, Mark v, Cardenas-Blanco, Arturo, Boumezbeur, Fawzi, Chan, Dennis, Clare, Stuart, Costagli, Mauro, de Rochefort, Ludovic, Fillmer, Ariane, Gowland, Penny, Hansson, Oskar, Hendrikse, Jeroen, Kraff, Oliver, Ladd, Mark E., Ronen, Itamar, Petersen, Esben, Rowe, James B., Siebner, Hartwig, Stoecker, Tony, Straub, Sina, Tosetti, Michela, Uludag, Kamil, Vignaud, Alexandre, Zwanenburg, Jaco, and Speck, Oliver

Published
2019
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9. A network of trans-cortical capillaries as mainstay for blood circulation in long bones

Author

Grüneboom, Anika, Hawwari, Ibrahim, Weidner, Daniela, Culemann, Stephan, Müller, Sylvia, Henneberg, Sophie, Brenzel, Alexandra, Merz, Simon, Bornemann, Lea, Zec, Kristina, Wuelling, Manuela, Kling, Lasse, Hasenberg, Mike, Voortmann, Sylvia, Lang, Stefanie, Baum, Wolfgang, Ohs, Alexandra, Kraff, Oliver, Quick, Harald H., Jäger, Marcus, Landgraeber, Stefan, Dudda, Marcel, Danuser, Renzo, Stein, Jens V., Rohde, Manfred, Gelse, Kolja, Garbe, Annette I., Adamczyk, Alexandra, Westendorf, Astrid M., Hoffmann, Daniel, Christiansen, Silke, Engel, Daniel Robert, Vortkamp, Andrea, Krönke, Gerhard, Herrmann, Martin, Kamradt, Thomas, Schett, Georg, Hasenberg, Anja, and Gunzer, Matthias

Published
2019
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17. The traveling heads: multicenter brain imaging at 7 Tesla

Author

Voelker, Maximilian N., Kraff, Oliver, Brenner, Daniel, Wollrab, Astrid, Weinberger, Oliver, Berger, Moritz C., Robinson, Simon, Bogner, Wolfgang, Wiggins, Christopher, Trampel, Robert, Stöcker, Tony, Niendorf, Thoralf, Quick, Harald H., Norris, David G., Ladd, Mark E., and Speck, Oliver

Published
2016
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28. ISMRM Best Practices for Safety Testing of Experimental RF Hardware

Author

De Zanche, Nicola, van den Berg, Cornelis, Brunner, David, Murphy-Boesch, Joseph, Rispoli, Joseph, Adriany, Gregor, Avdievich, Nikolai, Boulant, Nicolas, Brink, Wyger, Brown, Ryan, Fiedler, Thomas, Gilbert, Kyle, Golestani Rad, Laleh, Gruber, Bernhard, Keil,Boris, Kraff, Oliver, Magill, Arthur, Mareyam, Azma, Navarro de Lara, Lucia, Oh, Sukhoon, Rao, Mahdwesha, Santini, Tales, Steensma, Bart, Winter, Lukas, Wood, Sossena, Yetişir, Filiz, and Working Group on Best Practices for Safety Testing of Experimental RF Hardware

Subjects
electromagnetic simulations, biomedical engineering, RF coils, magnetic resonance imaging, RF safety, radio frequency, medical devices, IEC 60601
Abstract

This white paper was authored by the Working Group on Best Practices for Safety Testing of Experimental RF Hardware of the International Society for Magnetic Resonance in Medicine (ISMRM). Its purpose is "to assist experts in MRI scanner hardware with obtaining local research ethics approvals for radio frequency (RF) devices built at the research site". The white paper includes information on risk management and common mitigation strategies used to ensure the safety of site-built RF coils and other RF devices used on research subjects. This record mirrors the original published on the ISMRM web site in the MR Safety Resources section (https://www.ismrm.org/mr-safety-links/).

Published
2022

36. Seven-Tesla MRI of the female pelvis

Author

Umutlu, Lale, Kraff, Oliver, Fischer, Anja, Kinner, Sonja, Maderwald, Stefan, Nassenstein, Kai, Nensa, Felix, Grüneisen, Johannes, Orzada, Stephan, Bitz, Andreas K., Forsting, Michael, Ladd, Mark E., and Lauenstein, Thomas C.

Published
2013
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43. Higher sensitivity for traumatic cerebral microbleeds at 7 T ultra-high field MRI: is it clinically significant for the acute state of the patients and later quality of life?

Author

Hütter, Bernd-Otto, Altmeppen, Jan, Kraff, Oliver, Maderwald, Stefan, Theysohn, Jens, Ringelstein, Adrian, Wrede, Karsten, Dammann, Philipp, Quick, Harald H., Schlamann, Marc, and Mönninghoff, Christoph

Subjects
Advances in Neuroimaging, traumatic brain inury, susceptibility weighted imaging, health-related quality of life, acute clinical state, clinical significance, Medizin, 7 Tesla MRI, traumatic cerebral microbleeds, diffuse axonal injury, lcsh:Neurology. Diseases of the nervous system, lcsh:RC346-429, Original Research
Abstract

Background: The present study evaluates the possible prognostic benefits of 7 T susceptibility weighted imaging (SWI) of traumatic cerebral microbleeds (TMBs) over 3 T SWI to predict the acute clinical state and subjective impairments, including health-related quality of life (HRQOL), after closed head injury (CHI). Methods: The study group comprised 10 participants with known TMBs All subjects underwent 3 T magnetic resonance imaging (MRI) and 7 T MRI, respectively. Location and count of TMBs were independently evaluated by two neuroradiologists. The initial Glasgow Coma Scale (GCS), the duration of coma and further clinical data were taken from the patients records. HRQOL was assessed by means of a questionnaire. Memory complaints and neurological symptoms were inquired at the time of the MRI examinations. Results: SWI revealed a total of 485 TMBs at 3 T, 584 TMBs at 7 T with similar spatial resolution, and 684 TMBs at 7 T with a factor of 10 higher spatial resolution. The TMBs depicted by 7 T high-resolution SWI were correlated with the duration of coma (Spearman’s rho of 0.77). The corresponding association with TMBs in 3 T MRI SWI showed a Spearman’s rho of 0.71. The initial GCS score and TMBs correlated with a Spearman’s rho of −0.35 at 3 T SWI MRI and a rho of −0.33 at 7 T high-resolution SWI, respectively. The physical aspect of HRQOL correlated substantially with the count of TMBs (rho = 0.44 for 3 T SWI and rho = 0.35 for both 7 T SWI sequences, respectively). Conclusions: The number of TMBs showed a substantial association with indicators of the acute clinical state and chronic neurobehavioral parameters after CHI, but there was no additional advantage of 7 T MRI. These preliminary findings warrant a larger prospective study for the future. CA - Hütter

Published
2020

48. European Ultrahigh-Field Imaging Network for Neurodegenerative Diseases (EUFIND)

Author

Zorglijn AN/AAN Medisch, Brain, Circulatory Health, MS Radiologie, Researchgr. Neuroradiologie, Onderzoek Beeld, Highfield Research Group, Regenerative Medicine and Stem Cells, Cancer, Düzel, Emrah, Acosta-Cabronero, Julio, Berron, David, Biessels, Geert Jan, Björkman-Burtscher, Isabella, Bottlaender, Michel, Bowtell, Richard, Buchem, Mark V, Cardenas-Blanco, Arturo, Boumezbeur, Fawzi, Chan, Dennis, Clare, Stuart, Costagli, Mauro, de Rochefort, Ludovic, Fillmer, Ariane, Gowland, Penny, Hansson, Oskar, Hendrikse, Jeroen, Kraff, Oliver, Ladd, Mark E, Ronen, Itamar, Petersen, Esben, Rowe, James B, Siebner, Hartwig, Stoecker, Tony, Straub, Sina, Tosetti, Michela, Uludag, Kamil, Vignaud, Alexandre, Zwanenburg, Jaco, Speck, Oliver, Zorglijn AN/AAN Medisch, Brain, Circulatory Health, MS Radiologie, Researchgr. Neuroradiologie, Onderzoek Beeld, Highfield Research Group, Regenerative Medicine and Stem Cells, Cancer, Düzel, Emrah, Acosta-Cabronero, Julio, Berron, David, Biessels, Geert Jan, Björkman-Burtscher, Isabella, Bottlaender, Michel, Bowtell, Richard, Buchem, Mark V, Cardenas-Blanco, Arturo, Boumezbeur, Fawzi, Chan, Dennis, Clare, Stuart, Costagli, Mauro, de Rochefort, Ludovic, Fillmer, Ariane, Gowland, Penny, Hansson, Oskar, Hendrikse, Jeroen, Kraff, Oliver, Ladd, Mark E, Ronen, Itamar, Petersen, Esben, Rowe, James B, Siebner, Hartwig, Stoecker, Tony, Straub, Sina, Tosetti, Michela, Uludag, Kamil, Vignaud, Alexandre, Zwanenburg, Jaco, and Speck, Oliver

Published
2019

50. A 32-channel parallel transmit system add-on for 7T MRI

Author

Orzada, Stephan, primary, Solbach, Klaus, additional, Gratz, Marcel, additional, Brunheim, Sascha, additional, Fiedler, Thomas M., additional, Johst, Sören, additional, Bitz, Andreas K., additional, Shooshtary, Samaneh, additional, Abuelhaija, Ashraf, additional, Voelker, Maximilian N., additional, Rietsch, Stefan H. G., additional, Kraff, Oliver, additional, Maderwald, Stefan, additional, Flöser, Martina, additional, Oehmigen, Mark, additional, Quick, Harald H., additional, and Ladd, Mark E., additional

Published
2019
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