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) All Versions of this Article: 2333032004v1 233/3/921    most recent 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 HighWire Citing Articles via Google Scholar Google Scholar Articles by Gupta, A. Articles by Simonetti, O. P. Search for Related Content PubMed PubMed Citation Articles by Gupta, A. Articles by Simonetti, O. P.

Myocardial Infarction: Optimization of Inversion Times at Delayed Contrast-enhanced MR Imaging¹

¹ From the Department of Radiology–MRI, New York University Medical Center, 530 First Ave, New York, NY 10016 (A.G., V.S.L.); and Siemens Medical Solutions, Chicago, Ill (Y.C.C., J.S.B., O.P.S.). Received December 10, 2003; revision requested February 19, 2004; revision received February 23; accepted March 23. Supported by a Seed Grant from the Society of Thoracic Radiology and a New York University General Clinical Research Center Medical Student Grant. Address correspondence to V.S.L. (e-mail: vivian.lee@med.nyu.edu).

Seventeen patients underwent magnetic resonance (MR) imaging for myocardial viability with a protocol approved by the institutional review board and gave written informed consent. Breath-hold cine inversion-recovery segmented k-space true fast imaging with steady-state precession sequence, referred to as inversion time (TI) mapping, was performed to determine optimal TI for myocardial infarction inversion-recovery imaging. From TI mapping, optimal TI was 180–315 msec 10–15 minutes after administration of 0.15 mmol/kg of gadolinium-based contrast material. At that optimal TI, relative signal intensity of infarcted myocardium compared with uninfarcted myocardium was maximal (mean ± standard deviation, 297.8% ± 86.5), whereas signal-to-noise ratio of uninfarcted myocardium was minimal (4.5 ± 1.2). When applied to conventional myocardial infarction inversion-recovery imaging, optimal TI resulted in nulling of signal intensity of uninfarcted myocardium in all patients and in excellent conspicuity of infarcted myocardium in all nine patients with visible infarction.

© RSNA, 2004

Index terms: Magnetic resonance (MR), contrast enhancement • Magnetic resonance (MR), inversion recovery, 51.121413 • Myocardium, infarction, 51.771

This article has been cited by other articles:

				N. M. Rofsky Nephrogenic Systemic Fibrosis: Considerations for the Cardiologist J. Am. Coll. Cardiol. Img., July 1, 2008; 1(4): 457 - 459. [Full Text] [PDF]

				J. W. Goldfarb, S. Arnold, and J. Han Recent Myocardial Infarction: Assessment with Unenhanced T1-weighted MR Imaging Radiology, October 1, 2007; 245(1): 245 - 250. [Abstract] [Full Text] [PDF]

				V. S. Lee, H. Rusinek, L. Bokacheva, A. J. Huang, N. Oesingmann, Q. Chen, M. Kaur, K. Prince, T. Song, E. L. Kramer, et al. Renal function measurements from MR renography and a simplified multicompartmental model Am J Physiol Renal Physiol, May 1, 2007; 292(5): F1548 - F1559. [Abstract] [Full Text] [PDF]

				T. Baks, F. Cademartiri, A. D. Moelker, A. C. Weustink, R.-J. van Geuns, N. R. Mollet, G. P. Krestin, D. J. Duncker, and P. J. de Feyter Multislice Computed Tomography and Magnetic Resonance Imaging for the Assessment of Reperfused Acute Myocardial Infarction J. Am. Coll. Cardiol., July 4, 2006; 48(1): 144 - 152. [Abstract] [Full Text] [PDF]

				M. Dewey, M. Laule, M. Taupitz, N. Kaufels, B. Hamm, and D. Kivelitz Myocardial Viability: Assessment with Three-dimensional MR Imaging in Pigs and Patients Radiology, June 1, 2006; 239(3): 703 - 709. [Abstract] [Full Text] [PDF]