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

Volume

3

fYear

2000

fDate

2000

Firstpage

1339

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE

Conference_Location

Baltimore, MD

ISSN

1091-5281

Print_ISBN

0-7803-5890-2

Type

conf

DOI

10.1109/IMTC.2000.848693

Filename

848693