BACKGROUND: Investigate the effectiveness of beam-hardening (BH) correction using ECG-gated dual-kVp computed tomography (CT) for myocardial imaging. METHODS AND RESULTS: A human heart specimen and artificial descending aorta were scanned using both dual-kVp and single 120-kVp modes. The myocardial CT values at the anterior and posterobasal walls were 89.4±6.2 and 87.1±6.9 HU (P=0.59) for the 69-keV images, and 88.3±5.9 and 49.9±13.5 HU (P=0.002) for the 120-kVp images, respectively. CONCLUSIONS: Fast-switching dual-kVp technology is feasible for the correction of CT value deficits induced by BH that mimics perfusion defects.
BACKGROUND: Investigate the effectiveness of beam-hardening (BH) correction using ECG-gated dual-kVp computed tomography (CT) for myocardial imaging. METHODS AND RESULTS: A human heart specimen and artificial descending aorta were scanned using both dual-kVp and single 120-kVp modes. The myocardial CT values at the anterior and posterobasal walls were 89.4±6.2 and 87.1±6.9 HU (P=0.59) for the 69-keV images, and 88.3±5.9 and 49.9±13.5 HU (P=0.002) for the 120-kVp images, respectively. CONCLUSIONS: Fast-switching dual-kVp technology is feasible for the correction of CT value deficits induced by BH that mimics perfusion defects.
Authors: Andreas M Bucher; Julian L Wichmann; U Joseph Schoepf; Christopher D Wolla; Christian Canstein; Andrew D McQuiston; Aleksander W Krazinski; Carlo N De Cecco; Felix G Meinel; Thomas J Vogl; Lucas L Geyer Journal: Eur Radiol Date: 2015-12-09 Impact factor: 5.315
Authors: Jacob Levi; Hao Wu; Brendan L Eck; Rachid Fahmi; Mani Vembar; Amar Dhanantwar; Anas Fares; Hiram G Bezerra; David L Wilson Journal: Med Phys Date: 2020-12-07 Impact factor: 4.506