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396 results on '"Karanikas, Georgios"'

2. Whole-body metabolic connectivity framework with functional PET

Author

Reed, Murray Bruce, Ponce de León, Magdalena, Vraka, Chrysoula, Rausch, Ivo, Godbersen, Godber Mathis, Popper, Valentin, Geist, Barbara Katharina, Komorowski, Arkadiusz, Nics, Lukas, Schmidt, Clemens, Klug, Sebastian, Langsteger, Werner, Karanikas, Georgios, Traub-Weidinger, Tatjana, Hahn, Andreas, Lanzenberger, Rupert, and Hacker, Marcus

Published
2023
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7. PET/MRI versus PET/CT in oncology: a prospective single-center study of 330 examinations focusing on implications for patient management and cost considerations

Author

Mayerhoefer, Marius E., Prosch, Helmut, Beer, Lucian, Tamandl, Dietmar, Beyer, Thomas, Hoeller, Christoph, Berzaczy, Dominik, Raderer, Markus, Preusser, Matthias, Hochmair, Maximilian, Kiesewetter, Barbara, Scheuba, Christian, Ba-Ssalamah, Ahmed, Karanikas, Georgios, Kesselbacher, Julia, Prager, Gerald, Dieckmann, Karin, Polterauer, Stephan, Weber, Michael, Rausch, Ivo, Brauner, Bernhard, Eidherr, Harald, Wadsak, Wolfgang, and Haug, Alexander R.

Published
2020
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12. Supplementary Figure S1 from Improved Differentiation of Benign and Malignant Breast Tumors with Multiparametric 18Fluorodeoxyglucose Positron Emission Tomography Magnetic Resonance Imaging: A Feasibility Study

Author

Pinker, Katja, primary, Bogner, Wolfgang, primary, Baltzer, Pascal, primary, Karanikas, Georgios, primary, Magometschnigg, Heinrich, primary, Brader, Peter, primary, Gruber, Stephan, primary, Bickel, Hubert, primary, Dubsky, Peter, primary, Bago-Horvath, Zsuzsanna, primary, Bartsch, Rupert, primary, Weber, Michael, primary, Trattnig, Siegfried, primary, and Helbich, Thomas H., primary

Published
2023
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13. Supplementary Table S2 from Improved Differentiation of Benign and Malignant Breast Tumors with Multiparametric 18Fluorodeoxyglucose Positron Emission Tomography Magnetic Resonance Imaging: A Feasibility Study

Author

Pinker, Katja, primary, Bogner, Wolfgang, primary, Baltzer, Pascal, primary, Karanikas, Georgios, primary, Magometschnigg, Heinrich, primary, Brader, Peter, primary, Gruber, Stephan, primary, Bickel, Hubert, primary, Dubsky, Peter, primary, Bago-Horvath, Zsuzsanna, primary, Bartsch, Rupert, primary, Weber, Michael, primary, Trattnig, Siegfried, primary, and Helbich, Thomas H., primary

Published
2023
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14. Supplementary Figure 1 from Evaluation of Diffusion-Weighted MRI for Pretherapeutic Assessment and Staging of Lymphoma: Results of a Prospective Study in 140 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Pinker-Domenig, Katja, primary, Berzaczy, Dominik, primary, Hoffmann, Martha, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Müllauer, Leonhard, primary, Simonitsch-Klupp, Ingrid, primary, Dolak, Werner, primary, Gaiger, Alexander, primary, Ubl, Philipp, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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15. Supplementary Table 1 from Evaluation of Diffusion-Weighted MRI for Pretherapeutic Assessment and Staging of Lymphoma: Results of a Prospective Study in 140 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Pinker-Domenig, Katja, primary, Berzaczy, Dominik, primary, Hoffmann, Martha, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Müllauer, Leonhard, primary, Simonitsch-Klupp, Ingrid, primary, Dolak, Werner, primary, Gaiger, Alexander, primary, Ubl, Philipp, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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16. Data from Improved Differentiation of Benign and Malignant Breast Tumors with Multiparametric 18Fluorodeoxyglucose Positron Emission Tomography Magnetic Resonance Imaging: A Feasibility Study

Author

Pinker, Katja, primary, Bogner, Wolfgang, primary, Baltzer, Pascal, primary, Karanikas, Georgios, primary, Magometschnigg, Heinrich, primary, Brader, Peter, primary, Gruber, Stephan, primary, Bickel, Hubert, primary, Dubsky, Peter, primary, Bago-Horvath, Zsuzsanna, primary, Bartsch, Rupert, primary, Weber, Michael, primary, Trattnig, Siegfried, primary, and Helbich, Thomas H., primary

Published
2023
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17. Supplementary Figure Legends from Evaluation of Diffusion-Weighted MRI for Pretherapeutic Assessment and Staging of Lymphoma: Results of a Prospective Study in 140 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Pinker-Domenig, Katja, primary, Berzaczy, Dominik, primary, Hoffmann, Martha, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Müllauer, Leonhard, primary, Simonitsch-Klupp, Ingrid, primary, Dolak, Werner, primary, Gaiger, Alexander, primary, Ubl, Philipp, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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18. Supplementary Table 2 from Evaluation of Diffusion-Weighted MRI for Pretherapeutic Assessment and Staging of Lymphoma: Results of a Prospective Study in 140 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Pinker-Domenig, Katja, primary, Berzaczy, Dominik, primary, Hoffmann, Martha, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Müllauer, Leonhard, primary, Simonitsch-Klupp, Ingrid, primary, Dolak, Werner, primary, Gaiger, Alexander, primary, Ubl, Philipp, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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19. Supplementary Table 1 from Evaluation of Diffusion-Weighted Magnetic Resonance Imaging for Follow-up and Treatment Response Assessment of Lymphoma: Results of an 18F-FDG-PET/CT–Controlled Prospective Study in 64 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Knogler, Thomas, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Simonitsch-Klupp, Ingrid, primary, Ubl, Philipp, primary, Müllauer, Leonhard, primary, Dolak, Werner, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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20. Supplementary Figure 2 from Evaluation of Diffusion-Weighted MRI for Pretherapeutic Assessment and Staging of Lymphoma: Results of a Prospective Study in 140 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Pinker-Domenig, Katja, primary, Berzaczy, Dominik, primary, Hoffmann, Martha, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Müllauer, Leonhard, primary, Simonitsch-Klupp, Ingrid, primary, Dolak, Werner, primary, Gaiger, Alexander, primary, Ubl, Philipp, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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21. Supplementary Table 2 from Evaluation of Diffusion-Weighted Magnetic Resonance Imaging for Follow-up and Treatment Response Assessment of Lymphoma: Results of an 18F-FDG-PET/CT–Controlled Prospective Study in 64 Patients

Author

Mayerhoefer, Marius E., primary, Karanikas, Georgios, primary, Kletter, Kurt, primary, Prosch, Helmut, primary, Kiesewetter, Barbara, primary, Skrabs, Cathrin, primary, Porpaczy, Edit, primary, Weber, Michael, primary, Knogler, Thomas, primary, Sillaber, Christian, primary, Jaeger, Ulrich, primary, Simonitsch-Klupp, Ingrid, primary, Ubl, Philipp, primary, Müllauer, Leonhard, primary, Dolak, Werner, primary, Lukas, Julius, primary, and Raderer, Markus, primary

Published
2023
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22. Comparison of cardiac image-derived input functions for quantitative whole body [18F]FDG imaging with arterial blood sampling

Author

Reed, Murray Bruce, primary, Godbersen, Godber Mathis, additional, Vraka, Chrysoula, additional, Rausch, Ivo, additional, Ponce de León, Magdalena, additional, Popper, Valentin, additional, Geist, Barbara, additional, Nics, Lukas, additional, Komorowski, Arkadiusz, additional, Karanikas, Georgios, additional, Beyer, Thomas, additional, Traub-Weidinger, Tatjana, additional, Hahn, Andreas, additional, Langsteger, Werner, additional, Hacker, Marcus, additional, and Lanzenberger, Rupert, additional

Published
2023
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29. Comparison of cardiac image-derived input functions for quantitative whole body [18F]FDG imaging with arterial blood sampling.

Author

Reed, Murray Bruce, Godbersen, Godber Mathis, Vraka, Chrysoula, Rausch, Ivo, Ponce de León, Magdalena, Popper, Valentin, Geist, Barbara, Nics, Lukas, Komorowski, Arkadiusz, Karanikas, Georgios, Beyer, Thomas, Traub-Weidinger, Tatjana, Hahn, Andreas, Langsteger, Werner, Hacker, Marcus, and Lanzenberger, Rupert

Subjects
BLOOD sampling, POSITRON emission tomography, GLUCOSE metabolism
Abstract

Introduction: Dynamic positron emission tomography (PET) and the application of kinetic models can provide important quantitative information based on its temporal information. This however requires arterial blood sampling, which can be challenging to acquire. Nowadays, state-of-the-art PET/CT systems offer fully automated, whole-body (WB) kinetic modelling protocols using image-derived input functions (IDIF) to replace arterial blood sampling. Here, we compared the validity of an automatic WB kinetic model protocol to the reference standard arterial input function (AIF) for both clinical and research settings. Methods: Sixteen healthy participants underwent dynamic WB [18F]FDG scans using a continuous bed motion PET/CT system with simultaneous arterial blood sampling. Multiple processing pipelines that included automatic and manually generated IDIFs derived from the aorta and left ventricle, with and without motion correction were compared to the AIF. Subsequently generated quantitative images of glucose metabolism were compared to evaluate performance of the different input functions. Results: We observed moderate to high correlations between IDIFs and the AIF regarding area under the curve (r = 0.49–0.89) as well as for the cerebral metabolic rate of glucose (CMRGlu) (r = 0.68–0.95). Manual placing of IDIFs and motion correction further improved their similarity to the AIF. Discussion: In general, the automatic vendor protocol is a feasible approach for the quantification of CMRGlu for both, clinical and research settings where expertise or time is not available. However, we advise on a rigorous inspection of the placement of the volume of interest, the resulting IDIF, and the quantitative values to ensure valid interpretations. In protocols requiring longer scan times or where cohorts are prone to involuntary movement, manual IDIF definition with additional motion correction is recommended, as this has greater accuracy and reliability. [ABSTRACT FROM AUTHOR]

Published
2023
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42. Diagnostic Role of PET/CT Tracers in the Detection and Localization of Tumours Responsible for Ectopic Cushing’s Syndrome

Author

ZISSER, LUCIA, primary, KULTERER, OANA C., additional, ITARIU, BIANCA, additional, FUEGER, BARBARA, additional, WEBER, MICHAEL, additional, MAZAL, PETER, additional, VRAKA, CHRYSOULA, additional, PICHLER, VERENA, additional, KAUTZKY-WILLER, ALEXANDRA, additional, HACKER, MARCUS, additional, KARANIKAS, GEORGIOS, additional, and RASUL, SAZAN, additional

Published
2021
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43. Breast Tumor Characterization Using [18F]FDG-PET/CT Imaging Combined with Data Preprocessing and Radiomics

Author

Krajnc, Denis, primary, Papp, Laszlo, additional, Nakuz, Thomas S., additional, Magometschnigg, Heinrich F., additional, Grahovac, Marko, additional, Spielvogel, Clemens P., additional, Ecsedi, Boglarka, additional, Bago-Horvath, Zsuzsanna, additional, Haug, Alexander, additional, Karanikas, Georgios, additional, Beyer, Thomas, additional, Hacker, Marcus, additional, Helbich, Thomas H., additional, and Pinker, Katja, additional

Published
2021
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46. [18F]FETO: metabolic considerations

Author

Ettlinger, Dagmar E., Wadsak, Wolfgang, Mien, Leonhard-Key, Machek, Michael, Wabnegger, Leila, Rendl, Gundula, Karanikas, Georgios, Viernstein, Helmut, Kletter, Kurt, Dudczak, Robert, and Mitterhauser, Markus

Published
2006
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