3 Tesla MR imaging provides improved contrast in first-pass myocardial perfusion imaging over a range of gadolinium doses

Philip A. Araoz, James F. Glockner, Kiaran P. McGee, Dean Potter, V. Uma Valeti, David W. Stanley, Timothy F. Christian

Research output: Contribution to journalArticle

65 Scopus citations

Abstract

Purpose. To compare myocardial enhancement during first-pass myocardial perfusion imaging at 3.0 Tesla (T) and 1.5T. Materials and Methods. First-pass myocardial perfusion imaging was performed on twelve normal subjects at 3T and 1.5T using an interleaved notched saturation recovery gradient echo pulse sequence. Subjects received either 0.10 mmol/kg for both scans (group 1), 0.075 mmol/kg for both scans (group 2), or 0.075 mmol/kg for the 3T scan and 0.10 mmol/kg for the 1.5T scan (group 3). Results. Contrast enhancement was significantly greater at 3T than at 1.5T for the 12 subjects whether enhancement was normalized to baseline signal intensity (2.58 ± 0.76 vs. 1.52 ± 0.37, p < 0.0001) or to noise (57.6 ± 19.7 vs. 14.7 ± 7.8, p < 0001). For each of the three groups, contrast enhancement was significantly greater at 3T versus 1.5T (p < 0.0001, p < 0.001, p < 0.008 when normalized to baseline signal; p < 0.0001 for all groups when normalized to noise). Conclusion. 3T improves contrast in first-pass myocardial perfusion imaging at either 0.10 mmol/kg or 0.075 mmol/kg.

Original languageEnglish (US)
Pages (from-to)559-564
Number of pages6
JournalJournal of Cardiovascular Magnetic Resonance
Volume7
Issue number3
DOIs
StatePublished - Jun 15 2005

Keywords

  • 3 Tesla
  • Contrast
  • Perfusion

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine
  • Family Practice

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