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Your search keyword '"Karanikas, Georgios"' showing total 14 results
Start Over Author "Karanikas, Georgios" Journal european journal of nuclear medicine and molecular imaging
14 results on '"Karanikas, Georgios"'

1. 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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5. [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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9. 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., primary, Prosch, Helmut, additional, Beer, Lucian, additional, Tamandl, Dietmar, additional, Beyer, Thomas, additional, Hoeller, Christoph, additional, Berzaczy, Dominik, additional, Raderer, Markus, additional, Preusser, Matthias, additional, Hochmair, Maximilian, additional, Kiesewetter, Barbara, additional, Scheuba, Christian, additional, Ba-Ssalamah, Ahmed, additional, Karanikas, Georgios, additional, Kesselbacher, Julia, additional, Prager, Gerald, additional, Dieckmann, Karin, additional, Polterauer, Stephan, additional, Weber, Michael, additional, Rausch, Ivo, additional, Brauner, Bernhard, additional, Eidherr, Harald, additional, Wadsak, Wolfgang, additional, and Haug, Alexander R., additional

Published
2019
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14. The effect of device-based cardiac contractility modulation therapy on myocardial efficiency and oxidative metabolism in patients with heart failure.

Author

Goliasch G, Khorsand A, Schütz M, Karanikas G, Khazen C, Sochor H, Schmidinger H, Wolzt M, and Graf S

Subjects
Acetates, Aged, Carbon Radioisotopes, Energy Metabolism, Female, Heart Failure diagnostic imaging, Heart Failure metabolism, Humans, Male, Middle Aged, Oxidation-Reduction, Oxygen metabolism, Positron-Emission Tomography, Time Factors, Treatment Outcome, Heart Failure physiopathology, Heart Failure therapy, Heart-Assist Devices, Myocardial Contraction, Myocardium metabolism
Abstract

Purpose: Cardiac contractility modulation (CCM) is a device-based therapy that involves delivery of nonexcitatory electrical signals resulting in improved ventricular function and a reversal of maladaptive cardiac fetal gene programmes. Our aim was to evaluate whether acute application of CCM leads to an increase in myocardial oxygen consumption (MVO(2)) in patients with chronic heart failure using (11)C-acetate positron emission tomography (PET)., Methods: We prospectively enrolled 21 patients with severe heart failure. (11)C-acetate PET was performed before and after activation of the CCM device. In 12 patients an additional stress study with dobutamine was performed., Results: Under resting conditions, the values of myocardial blood flow (MBF), MVO(2) and work metabolic index (WMI, reflecting myocardial efficiency) with the CCM device activated did not differ significantly from the values with the device deactivated. MBF was 0.81 ± 0.18 ml min(-1) g(-1) with the device off and 0.80 ± 0.15 ml min(-1) g(-1) with the device on (p = 0.818), MVO(2) was 6.81 ± 1.69 ml/min/100 g with the device off and 7.15 ± 1.62 ml/min/100 g with the device on (p = 0.241) and WMI was 4.94 ± 1.14 mmHg ml/m(2) with the device off and 5.21 ± 1.36 mmHg ml/m(2) with the device on (p = 0.344). Under dobutamine stress, the values of MBF, MVO(2) and WMI with the CCM device activated did not differ from the values with the device deactivated, but were significantly increased compared with the values obtained under resting conditions., Conclusion: These results indicate that CCM does not induce increased MVO(2), even under stress conditions.

Published
2012
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