Coronary MR Imaging Using Free-Breathing 3D Steady-State Free Precession with Radial k-space Sampling

Elmar Spuentrup, M. Katoh, M. Stuber, R. Botnar, T. Schaeffter, A. Buecker, R. W. Günther

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To investigate the potential of free-breathing 3D steady-state free precession (SSFP) imaging with radial k-space sampling for coronary MR-angiography (MRA), coronary projection MR-angiography and coronary vessel wall imaging. Materials and Methods: A navigator-gated free-breathing T2-prepared 3D SSFP sequence (TR = 6.1 ms, TE = 3.0 ms, flip angle = 120°, field-of-view = 360 mm2) with radial k-space sampling (384 radials) was implemented for coronary MRA. For projection coronary MRA, this sequence was combined with a 2D selective aortic spin tagging pulse. Coronary vessel wall imaging was performed using a high-resolution inversion-recovery black-blood 3D radial SSFP sequence (384 radials, TR = 5.3 ms, TE = 2.7 ms, flip angle = 55°, reconstructed resolution 0.35 × 0.35 × 1.2 mm3) and a local re-inversion pulse. Six healthy volunteers (two for each sequence) were investigated. Motion artifact level was assessed by two radiologists. Results: In coronary MRA, the coronary lumen was displayed with a high signal and high contrast to the surrounding lumen. Projection coronary MRA demonstrated selective visualization of the coronary lumen while surrounding tissue was almost completely suppressed. In coronary vessel wall imaging, the vessel wall was displayed with a high signal when compared to the blood pool and the surrounding tissue. No visible motion artifacts were seen. Conclusion: 3D radial SSFP imaging enables coronary MRA, coronary projection MRA and coronary vessel wall imaging with a low motion artifact level.

Original languageEnglish (US)
Pages (from-to)1330-1334
Number of pages5
JournalRoFo Fortschritte auf dem Gebiet der Rontgenstrahlen und der Bildgebenden Verfahren
Volume175
Issue number10
DOIs
StatePublished - Oct 1 2003

Keywords

  • Contrast
  • Coronary artery disease
  • Coronary vessel
  • Magnetic resonance imaging
  • Motion artifacts

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Fingerprint

Dive into the research topics of 'Coronary MR Imaging Using Free-Breathing 3D Steady-State Free Precession with Radial k-space Sampling'. Together they form a unique fingerprint.

Cite this