Optimizing cine MRI for uterine peristalsis: A comparison of three different single shot fast spin echo techniques. Issue 1 (29th November 2012)

• Record Type: Journal Article
• Authors: Nakai, Asako; Reinhold, Caroline; Noel, Patricia; Kido, Aki; Rafatzand, Khashayar; Ito, Isao; Togashi, Kaori
• Is Part Of: Journal of magnetic resonance imaging. Volume 38:Issue 1(2013)
• Page Start: 161
• Page End: 167
• Publication Date: 2012-11-29
• Subjects: Magnetic resonance imaging -- Periodicals; 616
• DOI: 10.1002/jmri.23946
• Languages: English
• ISSNs: 1053-1807

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="jmri23946-sec-0001" sec-type="section"> <title>Purpose</title> <p>To determine the optimal single shot fast spin echo (SSFSE) technique by varying interval between image acquisitions for cine MRI of uterine peristalsis.</p> </sec> <sec id="jmri23946-sec-0002" sec-type="section"> <title>Materials and Methods</title> <p>MRI was performed in 13 premenopausal women (4 normal and 9 with benign pelvic pathology) in various phases of their menstrual cycle. Midsagittal uterus was scanned using a multiphasic SSFSE technique at 2‐, 3‐, and 4‐s intervals over 2 min. Three readers independently and randomly evaluated for peristaltic frequency/2 min, longitudinal direction and intensity of peristalsis in three imaging parameters. Contrast‐to‐noise ratios (CNRs) were also obtained.</p> </sec> <sec id="jmri23946-sec-0003" sec-type="section"> <title>Results</title> <p>Peristaltic frequency for the 2, 3, and 4 s was 2.2 ± 2.3, 3.3 ± 1.5, and 3.6 ± 1.3 waves/2 min, respectively. It increased by 1.5 (95% confidence interval [CI]: 0.31–2.64) waves/2 min with 4 s compared with 2 s. Direction was detected for the 2, 3, and 4 s in 5/13(38%), 9/13(69%) and 12/13(92%) women. Compared with 2 s, intensity of peristalsis in endometrial movement (<italic>P</italic> = 0.04), signal change of the JZ (<italic>P</italic> = 0.03), and spread into outer myometrium (<italic>P</italic> = 0.02), CNR<sub>endometrium‐JZ</sub> by 57% (<italic>P</italic> < 0.001), and CNR<sub>outer myometrium‐JZ</sub> by 45% (<italic>P</italic> < 0.01) increased with 4 s.</p> </sec> <sec id="jmri23946-sec-0004" sec-type="section"> <title>Conclusion</title> <p>Cine MRI with SSFSE sequence for uterine peristaltism is best performed using a 4‐s scan interval. J. Magn. Reson. Imaging 2013;38:161–167. © 2012 Wiley Periodicals, Inc.</p> </sec> </abstract>