Synchronization device for electrocardiography-gated echo-planar imaging.
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.
Felblinger
J
J
Magnetic Resonance (MR) Center, University and Inselspital, Berne, Switzerland.
Debatin
J F
JF
Boesch
C
C
Gruetter
R
R
McKinnon
G C
GC
D000328:Adult; D004562:Electrocardiography / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged