Affiliations: Department of Diagnostic Radiology, Peng Hu Hospital, Ministry of Health and Welfare, Taiwan | Department of Biomedical Imaging and Radiological Science, China Medical University, Taiwan | Department of Medical Imaging and Radiological Sciences, I-Shou University, Taiwan | Department of Electrical Engineering, Chung Yuan Christian University, Taiwan | Department of Radiology, China Medical University Hospital, Taiwan | Department of Biomedical Informatics, Asia University, Taiwan
Note: [] Corresponding author: Tzung-Chi Huang, Department of Biomedical
Imaging and Radiological Sciences, China Medical University, 91, Hsueh-Shih
Road, Taichung City, Taiwan. Tel.: +886 4 22053366 7805; E-mail: [email protected]
Abstract: Ventricular hemodynamics plays an important role in assessing
cardiac function in clinical practice. The aim of this study was to determine
the ventricular hemodynamics based on contrast movement in the left ventricle
(LV) between the phases in a cardiac cycle recorded using an
electrocardiography (ECG) with cardiac computed tomography (CT) and optical
flow method. Cardiac CT data were acquired at 120 kV and 280 mA with a 350 ms
gantry rotation, which covered one cardiac cycle, on the 640-slice CT scanner
with ECG for a selected patient without heart disease. Ventricular hemodynamics
(mm/phase) were calculated using the optical flow method based on contrast
changes with ECG phases in anterior-posterior, lateral and superior-inferior
directions. Local hemodynamic information of the LV with color coating was
presented. The visualization of the functional information made the
hemodynamic observation easy.
Keywords: Left ventricle, hemodynamics, computed tomography
