Fast spin echo imaging of carotid artery dynamics. Issue 4 (13th October 2014)

• Record Type: Journal Article
• Authors: Boesen, Mari E.; Maior Neto, Luis A. Souto; Pulwicki, Alexandra; Yerly, Jerome; Lebel, R. Marc; Frayne, Richard
• Is Part Of: Magnetic resonance in medicine. Volume 74:Issue 4(2015:Oct.)
• Page Start: 1103
• Page End: 1109
• Publication Date: 2014-10-13
• Subjects: Nuclear magnetic resonance -- Periodicals; Electron paramagnetic resonance -- Periodicals; 616.07548
• DOI: 10.1002/mrm.25494
• Languages: English
• ISSNs: 0740-3194

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="mrm25494-sec-0001" sec-type="section"> <title>Purpose</title> <p>We propose the use of a retrospectively gated cine fast spin echo (FSE) sequence for characterization of carotid artery dynamics. The aim of this study was to compare cine FSE measures of carotid dynamics with measures obtained on prospectively gated FSE images.</p> </sec> <sec id="mrm25494-sec-0002" sec-type="section"> <title>Methods</title> <p>The common carotid arteries in 10 volunteers were imaged using two temporally resolved sequences: (i) cine FSE and (ii) prospectively gated FSE. Three raters manually traced a common carotid artery area for all cardiac phases on both sequences. Measured areas and systolic–diastolic area changes were calculated and compared. Inter‐ and intra‐rater reliability were assessed for both sequences.</p> </sec> <sec id="mrm25494-sec-0003" sec-type="section"> <title>Results</title> <p>No significant difference between cine FSE and prospectively gated FSE areas were observed (<italic>P</italic> = 0.36). Both sequences produced repeatable cross‐sectional area measurements: inter‐rater intraclass correlation coefficient (ICC) = 0.88 on cine FSE images and 0.87 on prospectively gated FSE images. Minimum detectable difference (MDD) in systolic–diastolic area was 4.9 mm<sup>2</sup> with cine FSE and 6.4 mm<sup>2</sup> with prospectively gated FSE.</p> </sec> <sec id="mrm25494-sec-0004" sec-type="section"> <title>Conclusion</title> <p>This cine FSE method produced repeatable dynamic carotid artery measurements with less artifact and greater temporal efficiency compared with prospectively gated FSE. Magn Reson Med 74:1103–1109, 2015. © 2014 Wiley Periodicals, Inc.</p> </sec> </abstract>