Blood flow gated MRI

Details Blood flow gated MRI Blood flow gated MRI

2005-07-26

2005-07-26

Robinson, Daniel (Department: 3742)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S419000

Reexamination Certificate

active

06922580

ABSTRACT:
A magnetic resonance imaging method and apparatus includes a navigator region defined within the subject by selective excitation. Blood flow is measured within the selected region using the principles of phase contrast MR angiography. A cardiac cycle plot is constructed from Fourier transformed data that represents measured velocity of blood flow through the navigator region as a function of time. On the basis of the cardiac cycle plot and the navigator measurements, data acquisition is synchronized or gated to portions of the cardiac cycle.

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Langerak, et al. “Evaluation of Coronary Artery Bypass Grafts By Magnetic Resonance Imaging”, Journ. Of Magnetic Resonance Imaging 10:434-441 (1999) XP009010955.

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