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

This Article Abstract 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 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 HighWire Citing Articles via Google Scholar Google Scholar Articles by Moelker, A. Articles by Pattynama, P. M. T. Search for Related Content PubMed PubMed Citation Articles by Moelker, A. Articles by Pattynama, P. M. T.

Verbal Communication in MR Environments: Effect of MR System Acoustic Noise on Speech Understanding¹

¹ From the Departments of Radiology (A.M., P.M.T.P.) and Audiophysics (R.A., J.J.M.), Erasmus Medical Center Rotterdam, 50 Dr Molewaterplein, PO Box 1738, 3000 DR Rotterdam, the Netherlands. Received June 18, 2003; revision requested August 13; final revision received November 4; accepted November 20. Address correspondence to A.M. (e-mail: a.moelker@erasmusmc.nl).

View larger version (57K): [in a new window]   Acoustic noise spectra of FGRET and FSPGR at operator location with short repetition time (A,B) and of FGRET at operator location and patient location with long repetition time (TR) (C,D). In A and B, the harmonics are clearly distinguishable, whereas in C and D, the harmonics are too closely spaced, giving rise to a broadband noise spectrum. Note the peak frequency at approximately 2 kHz in D. Spectra were obtained with a 4,096-point fast Fourier transform and a Hannig filter. SPL = sound pressure level.