Speaker
Mr
Yang-Hsien Lin
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
Description
Introduction: In the fields of heart failure diagnosis, expect for the evaluation of heart valve abnormality, the myocardial wall motion is another important indication which has been concluded in many studies. Cardiovascular magnetic resonance (CMR) imaging provides highly reproducible data of myocardial deformation. Recently, the cardiac computed tomography (CT) imaging technique has become a new tool because of its advantages of good dynamic resolution, low cost and breath hold not required.
Materials and Methods: In this study, we analyzed the wall motion of heart by using Optical Flow Method (OFM), and compared the correlation between CMR and Cardiac CT imaging. The Cardiac CT scan was performed on the 64-slice DSCT scanner (Definition, Siemens Medical Systems, Forchheim, Germany) with a gantry rotation time of 330 ms. CMR was performed on a 3.0-T system (Achieva, Philips Medical Systems, Best, the Netherlands) using a 32-channel cardiac phased array receiver coil.
Results: According to the analysis results of Cardiac CT and CMR, the average wall motions between the diastole and systole phase in the left ventricle was 2.15±0.47 mm and 2.21±0.46 mm, respectively. The regression equation between the Cardiac CT and CMR was y=0.06+1.00x with R2=0.83 and the correlation coefficient was 0.91, which means the data were highly positively correlated.
Conclusion: Using OFM motion estimate could accurately track myocardial deformation. The highly positive correlation between CMR and Cardiac CT images with OFM. Therefore, the Cardiac CT assessment myocardial motion may assist analysis in the diagnosis of heart failure.
Key Words: Myocardial Deformation, Cardiovascular magnetic resonance, Cardiac computed tomography, Optical Flow Method
Author
Dr
Chun-Ho Yun
(Department of Radiology, Mackay Memorial Hospital)
Co-authors
Dr
Fei-Shih Yang
(Department of Radiology, Mackay Memorial Hospital)
Dr
Jui-Peng Tsai
(Department of Cardiology, Mackay Memorial Hospital)
Prof.
Tung-Hsin Wu
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
Prof.
Tzung-Chi Huang
(Department of Biomedical Imaging and Radiological Science, China Medical University)
Mr
Yang-Hsien Lin
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
