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Radiology, Vol 197, 311-313, Copyright © 1995 by Radiological Society of North America

ARTICLES

Synchronization device for electrocardiography-gated echo-planar imaging

J Felblinger, JF Debatin, C Boesch, R Gruetter and GC McKinnon
Magnetic Resonance (MR) Center, University and Inselspital, Berne, Switzerland.

An electrocardiography (ECG) synchronization technique allowed triggering of 1.5-T echo-planar acquisitions of the heart, with high gradient slew rates. In 51 volunteers (37 men and 14 women, aged 21-48 years), the ECG signal was amplified, filtered, and converted into an optical signal directly above the heart and was transmitted optically outside the bore. Reliable and artifact-free ECG tracings were obtained in all cases, regardless of the gradient switching speed.


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[Abstract] [Full Text]


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