Multislice First-Pass Myocardial Perfusion Imaging: Comparison of Saturation Recovery (SR)-TrueFISP-Two-Dimensional (2D) and SR-TurboFLASH-2D Pulse Sequences

Michael Fenchel, Uwe Helber, Orlando P. Simonetti, Norbert I. Stauder, Ulrich Kramer, Co Nghi Nguyen, J. Paul Finn, Claus D. Claussen, Stephan Miller

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Purpose: To compare signal-to-noise ratio (SNR), contrast-to-noise (CNR) ratio, and diagnostic accuracy of a newly developed saturation recovery (SR)-TrueFISP-two-dimensional (2D) sequence with an SR-TurboFLASH-2D sequence, Materials and Methods: In seven healthy subjects and nine patients with coronary artery disease (CAD), contrast-enhanced perfusion imaging (with Gd-DTPA) was performed with SR-TrueFISP and SR-TurboFLASH sequences. Hypoperfused areas were assessed qualitatively (scale = 0-4). Furthermore, SNR and CNR were calculated and semiquantitative perfusion parameters were determined from signal intensity (SI) time curves. Standard of reference for patient studies was single-photon emission computer tomography (SPECT) and angiography. Results: The perception of perfusion deficits was superior in TrueFISP images (2.6 ± 1.0) than in TurboFLASH (1.4 ± 0.6) (P < 0.001). Phantom measurements yielded increased SNR (143 ± 34%) and CNR (158 ± 64%) values for TrueFISP. In patient/volunteer studies SNR was 61% to 100% higher and signal enhancement was 110% to 115% higher with TrueFISP than with TurboFLASH. Qualitative and semiquantitative assessment of perfusion defects yielded higher sensitivities for detection of perfusion defects with TrueFISP (68% to 78%) than with TurboFLASH (44% to 59%). Conclusion: SR-TrueFISP-2D perfusion imaging provides superior SNR and CNR than TurboFLASH imaging. Moreover, the dynamic range of SIs was found to be higher with TrueFISP, resulting in an increased sensitivity for detection of perfusion defects.

Original languageEnglish (US)
Pages (from-to)555-563
Number of pages9
JournalJournal of Magnetic Resonance Imaging
Volume19
Issue number5
DOIs
StatePublished - May 2004
Externally publishedYes

Keywords

  • CAD
  • FLASH
  • Heart MR
  • Magnetic resonance (MR)
  • Magnetic resonance (MR) imaging
  • Magnetic resonance (MR) technology
  • Myocardial perfusion
  • TrueFISP

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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