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Original Research Toward MRI-Guided Coronary Catheterization

Summary: Original Research
Toward MRI-Guided Coronary Catheterization:
Visualization of Guiding Catheters, Guidewires,
and Anatomy in Real Time
Jean-Michel Serfaty, MD, Xiaoming Yang, MD, PhD, Pelin Aksit, MS, Harald H. Quick, MS,
Meiyappan Solaiyappan, PhD, MD, and Ergin Atalar, PhD*
The success of x-ray fluoroscopy-guided coronary cathe-
terization depends in part on the ability to obtain simul-
taneous and real-time visualization of the guidewire, guid-
ing catheter, and anatomy of the chest. The hypothesis
explored in this paper is that magnetic resonance imaging
(MRI) could provide this ability. This hypothesis was
tested with loopless antennas used as the guidewire and a
guiding catheter and two surface coils, each connected to
four different receiver channels of a GE 1.5-T CV/I MRI
scanner. Experiments were conducted on six healthy dogs.
Intravascular antennas were inserted in the right carotid
artery and maneuvered in the aorta while running a fast
gradient-echo sequence (TR/TE 5/1.3 msec, flip angle 7).


Source: Atalar, Ergin - Department of Electrical and Electronics Engineering, Bilkent University


Collections: Engineering; Biology and Medicine