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Humber River Regional Hospital

MRI may be safe for many patients with implanted pacemakers

Published in Telemedicine Business Week, November 17th, 2004

Contrary to conventional wisdom, many patients with pacemakers can safely undergo MRI examinations.

"The presence of an implanted pacemaker is widely regarded as an absolute contraindication to magnetic resonance (MR) imaging; however, this viewpoint is based largely on safety concerns in the 1982-1996 period," radiologists in Canada explained.

"Since 1996, changes in pacemaker electronics including decreased ferromagnetic content, increased sophistication of the circuitry, and onboard computer capabilities suggest that the absolute contraindication of MR imaging for pacemaker patients should be reconsidered," noted J. Loewy and colleagues at Humber...

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