Ventricular hemodynamics using cardiac computed tomography and optical flow method.
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.
Department of Diagnostic Radiology, Peng Hu Hospital, Ministry of Health and Welfare, Taiwan Department of Biomedical Imaging and Radiological Science, China Medical University, Taiwan.
Yang-Hsien
YH
Lin
Department of Medical Imaging and Radiological Sciences, I-Shou University, Taiwan.
Yung-Hui
YH
Huang
Department of Electrical Engineering, Chung Yuan Christian University, Taiwan.
Kang-Ping
KP
Lin
Department of Radiology, China Medical University Hospital, Taiwan.
Juhn-Cherng
JC
Liu
Department of Biomedical Imaging and Radiological Science, China Medical University, Taiwan Department of Biomedical Informatics, Asia University, Taiwan.
Tzung-Chi
TC
Huang
D004562:Electrocardiography; D006321:Heart / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods*
Left ventricle; computed tomography; hemodynamics