Analysis of cardiac function - Comparison between 1.5 tesla and 3.0 tesla cardiac cine magnetic resonance imaging: Preliminary experience

Henrik J. Michaely, Kambiz Nael, Stefan O. Schoenberg, Gerhard Laub, Maximilian F. Reiser, J. Paul Finn, Stefan G. Ruehm

Research output: Contribution to journalArticle

53 Scopus citations

Abstract

PURPOSE: We sought to assess the feasibility of magnetic resonance imaging to evaluate cardiac function at 3.0 T compared with 1.5 T. MATERIAL AND METHODS: In a prospective intraindividual comparative study, 12 volunteers (range, 18-54 years), and 2 patients (range, 43-53 years) underwent cardiac cine magnetic resonance at both 3.0 T and 1.5 T. Data were acquired both with a steady-state free precession sequence (SSFP) and a spoiled gradient echo (SGE) sequence. If necessary, a frequency scout was used to correct for off-resonance artifacts. For both SSFP and SGE imaging, 6-mm thick retrospectively EKG-gated short axis views were acquired with equal matrix size (192 x 163) and comparable repetition time (TR). Cardiac function parameters were determined manually by a single investigator. Cardiac function parameters, signal to noise ratio (SNR), contrast to noise ratio (CNR), and the presence of artifacts were compared between the 2 magnetic field strengths. For statistical analysis, a Pearson's correlation coefficient was calculated, and a paired Student t test was used to test statistical significance. RESULTS: Very good correlations between cardiac function parameters at 1.5 T and 3.0 T (r > 0.84, P < 0.0011) were obtained. Compared with SGE, SSFP more frequently was prone to artifacts. With SSFP/SGE at 3.0 T, a SNR gain of 9.4/16% was achieved compared with 1.5 T. CONCLUSION: Functional cardiac cine magnetic resonance imaging can be regarded as equally accurate at 3.0 T compared with 1.5 T. Compared with SSFP imaging, the SGE sequence benefits more from higher field strengths and is less affected by artifacts.

Original languageEnglish (US)
Pages (from-to)133-140
Number of pages8
JournalInvestigative Radiology
Volume41
Issue number2
DOIs
StatePublished - Feb 1 2006

Keywords

  • 1.5 Tesla
  • 3.0 Tesla
  • Artifacts
  • Cardiac cine imaging
  • Cardiac function
  • Comparison study
  • High-field imaging
  • Magnetic resonance imaging
  • Spoiled gradient echo
  • Steady state free precession

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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