HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Kanal, E. Articles by Scheuer, M. P. Search for Related Content PubMed PubMed Citation Articles by Kanal, E. Articles by Scheuer, M. P.

Platinum Subdural Grid: MR Imaging Compatibility Testing¹

¹ From the Departments of Radiology (E.K., C.C.M.), Psychiatry (C.C.M.), and Neurology (M.P.S.), University of Pittsburgh Medical Center, 200 Lothrop St, Rm D132, Pittsburgh, PA 15213-2582; and the Department of Neurosurgery, Children's Hospital of Pittsburgh, Pa (P.D.A.). Received April 23, 1998; revision requested July 2; revision received August 21; accepted December 15. Address reprint requests to E.K.

A platinum subdural grid electrode (used for seizure monitoring) was tested for potential heating during magnetic resonance (MR) imaging at 1.5 and 3.0 T. Fast spin-echo imaging with high radio-frequency transmitted power was performed while temperature measurements for the grid phantom were recorded by means of fiberoptic thermometry. Temperature variations remained within 1.0°C. MR imaging examination in patients in whom such grid electrodes are implanted is expected to result in clinically insignificant temperature changes in the vicinity of the grid electrode or its leads.

Index terms: Head, MR, 10.1214 • Magnetic resonance (MR), physics • Magnetic resonance (MR), safety • Radiology and radiologists, iatrogenic injury