Title :
Left ventricular wall motion display using MRI myocardial tagging
Author :
Morito, Tsuneharu ; Hiraki, Yoshio ; Nakagawa, Tomio ; Sano, Tetsuya ; Yamamoto, Hideki
Author_Institution :
Dept. of Radiol., Okayama Univ., Japan
Abstract :
We have developed a left ventricular wall motion analysis method, and developed a display method of the motion on personal computer monitor. To know precise rotation or deformity, identifiable landmarks must be located. The MRI tagging makes it possible to estimate the regional wall motion noninvasively. We tried to estimate the precise LV wall motion by the MRI tagging. Tagging is achieved by a selective saturation pulse method. The difference of the signal intensity between tagged and nontagged regions persists for 400-700 milliseconds. We display the tag point movement as animation, and display the rotation and contraction curve on the same computer monitor
Keywords :
biomedical MRI; cardiology; computer animation; medical image processing; motion estimation; muscle; MRI myocardial tagging; animation; deformity; hysteresis loops; identifiable landmarks; left ventricular wall motion display; noninvasive estimation; phasal gap; precise rotation; regional wall motion; rotation and contraction curve; selective saturation pulse method; signal intensity difference; tag point movement; wall motion analysis method; Biomedical imaging; Displays; Heart; Hysteresis; Magnetic resonance imaging; Microcomputers; Motion estimation; Myocardium; Radiology; Tagging;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848693
