Prospective navigator correction of image position for coronary MR angiography.

• DOI: 10.1148/radiology.203.3.9169696
• Publication Date: 2014-07-08T20:22:31Z
• Authors: P G Danias; M V McConnell; V C Khasgiwala; M L Chuang; R R Edelman; W J Manning
• Keywords: Adult; Male; Time Factors; Movement; Respiration; Middle Aged; Coronary Angiography; Image Enhancement; Coronary Vessels; 03 medical and health sciences; 0302 clinical medicine; Image Processing, Computer-Assisted; Humans; Female; Prospective Studies; Magnetic Resonance Angiography

PURPOSE: To determine the potential benefit of prospective navigator correction image position for coronary magnetic resonance (MR) angiography. MATERIALS AND METHODS: Two-dimensional MR angiograms were obtained with free breathing in 12 adult subjects. Navigator gating was used and without windows set at 3, 5, 7 mm. compared those conventional, end-expiratory breath holding. RESULTS: resulted quality equivalent to that holding, even 7-mm window. In contrast, allowed only maintenance similar holding 3- 5-mm decreased window (P < .05). Use a 28% decrease imaging time 33% 3-mm .05 both comparisons). CONCLUSION: Prospective, adaptive free-breathing angiography is promising, novel approach compensate respiratory motion.