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) Alert me when this article is cited 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 Huber, A. Articles by Reiser, M. F. Search for Related Content PubMed PubMed Citation Articles by Huber, A. Articles by Reiser, M. F. Social Bookmarking                      What's this? Hotlight (NEW!) What's Hotlight?

Single-Shot Inversion Recovery TrueFISP for Assessment of Myocardial Infarction

¹ Institut für Klinische Radiologie, Klinikum Großhadern, Marchioninistrasse 15, Munich 81377, Germany.
² Department of Cardiology, Klinikum Innenstadt, Munich, Germany.

OBJECTIVE. The aim of the study was to assess the diagnostic accuracy of imaging the myocardium with a fast multislice inversion recovery 2D single-shot true fast imaging with steady-state precession (trueFISP) sequence during a single breath-hold in comparison with an established segmented inversion recovery turbo fast low-angle shot (turboFLASH) sequence.

SUBJECTS AND METHODS. Forty-three patients with myocardial infarction were examined on a 1.5-T MR system 10 min after administration of contrast material (gadodiamide, 0.2 mmol/kg) with a single-shot 2D multislice technique (single-shot inversion recovery trueFISP) that allows one to image the entire short axis during one breath-hold (18 heartbeats) and with a segmented 2D single-slice technique (inversion recovery turboFLASH) that requires one breath-hold per slice (12 heartbeats). Signal intensity was determined in normal myocardium, in infarcted myocardium, and in the left ventricle. The contrast-to-noise ratio (CNR) of normal and infarcted myocardium was determined. The areas of hyperintense infarctions on selected slices and the entire volumes were compared for both sequence techniques.

RESULTS. The inversion recovery trueFISP sequence has a lower CNR than the inversion recovery turboFLASH sequence (mean values, 10.0 vs 12.9, respectively; p = 0.005) for differentiation of viable from nonviable myocardium. The CNR of injured myocardium and blood in the left ventricular cavity also has a lower value for the multislice technique compared with the single-slice technique (0.6 vs 1.2, respectively; p = 0.045). Assessment of the area of infarction within one slice (r = 0.97, p < 0.002) and of the volume of the entire infarction (r = 0.96, p < 0.003) is possible with excellent correlation of both techniques.

CONCLUSION. Despite having a lower CNR, the inversion recovery 2D single-shot trueFISP sequence allows fast and accurate identification of the area and volume of infarction with high spatial resolution within a single breath-hold.

Keywords: ischemia • heart • MR contrast agents • MRI • myocardial infarction

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				K. U. Bauner, O. Muehling, D. Theisen, C. Hayes, B. J. Wintersperger, M. F. Reiser, and A. M. Huber Assessment of Myocardial Viability with 3D MRI at 3 T Am. J. Roentgenol., June 1, 2009; 192(6): 1645 - 1650. [Abstract] [Full Text] [PDF]

				H. C. M. van den Bosch, J. J. M. Westenberg, J. C. Post, G. Yo, J. Verwoerd, L. J. M. Kroft, and A. de Roos Free-Breathing MRI for the Assessment of Myocardial Infarction: Clinical Validation Am. J. Roentgenol., June 1, 2009; 192(6): W277 - W281. [Abstract] [Full Text] [PDF]

				F. Saremi, J. D. Grizzard, and R. J. Kim Optimizing Cardiac MR Imaging: Practical Remedies for Artifacts RadioGraphics, July 1, 2008; 28(4): 1161 - 1187. [Abstract] [Full Text] [PDF]