Superiority of prone position in free-breathing 3D coronary MRA in patients with coronary disease

Matthias Stuber, Peter G. Danias, Rene M. Botnar, Daniel K. Sodickson, Kraig V. Kissinger, Warren J. Manning

Research output: Contribution to journalArticle

Abstract

Navigator-gated and corrected 3D coronary MR angiography (MRA) allows submillimeter image acquisition during free breathing. However, cranial diaphragmatic drift and relative phase shifts of chest-wall motion are limiting factors for image quality and scanning duration. We hypothesized that image acquisition in the prone position would minimize artifacts related to chest-wall motion and suppress diaphragmatic drift. Twelve patients with radiographically-confirmed coronary artery disease and six healthy adult volunteers were studied in both the prone and the supine position during free-breathing navigator-gated and corrected 3D coronary MRA. Image quality and the diaphragmatic positions were objectively compared. In the prone position, there was a 36% improvement in signal-to-noise ratio (SNR; 15.5 ± 2.7 vs. 11.4 ± 2.6; P <0.01) and a 34% improvement in CNR (12.5 ± 3.3 vs. 9.3 ± 2.5, P <0.01). The prone position also resulted in a 17% improvement in coronary vessel definition (P <0.01). Cranial end-expiratory diaphragmatic drift occurred less frequently in the prone position (23% ± 17% vs. 40% ± 26% supine; P

Original languageEnglish (US)
Pages (from-to)185-191
Number of pages7
JournalJournal of Magnetic Resonance Imaging
Volume13
Issue number2
DOIs
StatePublished - 2001
Externally publishedYes

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Prone Position
Coronary Angiography
Coronary Disease
Respiration
Thoracic Wall
Supine Position
Signal-To-Noise Ratio
Artifacts
Coronary Artery Disease
Coronary Vessels
Healthy Volunteers

Keywords

  • Free-breathing 3D coronary MRA
  • Magnetic resonance imaging
  • Navigator

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Superiority of prone position in free-breathing 3D coronary MRA in patients with coronary disease. / Stuber, Matthias; Danias, Peter G.; Botnar, Rene M.; Sodickson, Daniel K.; Kissinger, Kraig V.; Manning, Warren J.

In: Journal of Magnetic Resonance Imaging, Vol. 13, No. 2, 2001, p. 185-191.

Research output: Contribution to journalArticle

Stuber, Matthias ; Danias, Peter G. ; Botnar, Rene M. ; Sodickson, Daniel K. ; Kissinger, Kraig V. ; Manning, Warren J. / Superiority of prone position in free-breathing 3D coronary MRA in patients with coronary disease. In: Journal of Magnetic Resonance Imaging. 2001 ; Vol. 13, No. 2. pp. 185-191.
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