nad a22 4500 551414405 20181214064258.0 cr unu---uuuuu 181214e201809 xx s 000 0 eng 10.1016/j.nut.2017.12.016 doi (ZORA)oai:www.zora.uzh.ch:159300 610 ddc 29625351 pmid Influence of tube potential on CT body composition analysis [Elektronische Daten] [Fabian Morsbach, Yi-Hua Zhang, Patrik Nowik, Lena Martin, Catarina Lindqvist, Anders Svensson, Torkel B Brismar] closedAccess eu-repo OBJECTIVES Our purpose was to investigate whether tube potential in contrast-enhanced computed tomography (CT) affects body composition analysis. METHODS Images from dual-source, dual-energy CT from the abdomen with intravenous contrast media administration were used. A total of 17 patients (11 women, mean age 52) with a mean body mass index of 20.8 kg/cm were included. Simultaneously acquired images with a tube voltage of 80 kV and 140 kV were compared. Body composition was analyzed on a single slice at the L3 level. Parameters evaluated included muscle and fat attenuation (Hounsfield units [HU]), skeletal muscle index (cm/m), muscle area (cm), and steatotic muscle area (cm). Significant differences between 80 kV and 140 kV series were compared using the paired Student's t test. RESULTS Tube potential affected muscle attenuation with an average difference of 17% between 80 kV and 140 kV series (48 HU versus 41 HU, P < 0.01), fat attenuation (-84 HU versus -69 HU, P < 0.01), skeletal muscle index of 5.2% (40.1 cm/m versus 42.2 cm/m, P < 0.01), muscle area of 5.1% (117 cm versus 123 cm, P < 0.01), and steatotic muscle area of 12.9% (31 cm versus 35 cm, P < 0.01). CONCLUSION Tube potential significantly affects body segmentation in contrast-enhanced CT. Clinic for Diagnostic and Interventional Radiology zora Morsbach Fabian joint author Zhang Yi-Hua joint author Nowik Patrik joint author Martin Lena joint author Lindqvist Catarina joint author Svensson Anders joint author Brismar Torkel B. joint author Nutrition 53:9-13 https://www.zora.uzh.ch/159300 text/html WWW-Backlink auf das Repository 1 Journal Article PeerReviewed zora ZORA 856 40 https://www.zora.uzh.ch/159300 text/html WWW-Backlink auf das Repository ZORA 700 1- Morsbach Fabian joint author ZORA 700 1- Zhang Yi-Hua joint author ZORA 700 1- Nowik Patrik joint author ZORA 700 1- Martin Lena joint author ZORA 700 1- Lindqvist Catarina joint author ZORA 700 1- Svensson Anders joint author ZORA 700 1- Brismar Torkel B. joint author ZORA 773 0- Nutrition 53:9-13 BK010053 XK010053 XK010000 ZORA ZORA ZORA Journal Article closedAccess