TY - JOUR
T1 - Optimizing cine MRI for uterine peristalsis
T2 - A comparison of three different single shot fast spin echo techniques
AU - Nakai, Asako
AU - Reinhold, Caroline
AU - Noel, Patricia
AU - Kido, Aki
AU - Rafatzand, Khashayar
AU - Ito, Isao
AU - Togashi, Kaori
PY - 2013/7
Y1 - 2013/7
N2 - Purpose To determine the optimal single shot fast spin echo (SSFSE) technique by varying interval between image acquisitions for cine MRI of uterine peristalsis. Materials and Methods 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. Results 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 (P = 0.04), signal change of the JZ (P = 0.03), and spread into outer myometrium (P = 0.02), CNR endometrium-JZ by 57% (P < 0.001), and CNR outer myometrium-JZ by 45% (P < 0.01) increased with 4 s. Conclusion Cine MRI with SSFSE sequence for uterine peristaltism is best performed using a 4-s scan interval.
AB - Purpose To determine the optimal single shot fast spin echo (SSFSE) technique by varying interval between image acquisitions for cine MRI of uterine peristalsis. Materials and Methods 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. Results 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 (P = 0.04), signal change of the JZ (P = 0.03), and spread into outer myometrium (P = 0.02), CNR endometrium-JZ by 57% (P < 0.001), and CNR outer myometrium-JZ by 45% (P < 0.01) increased with 4 s. Conclusion Cine MRI with SSFSE sequence for uterine peristaltism is best performed using a 4-s scan interval.
KW - cine MRI
KW - scan interval
KW - single shot fast spin echo
KW - uterine peristalsis
UR - http://www.scopus.com/inward/record.url?scp=84880103555&partnerID=8YFLogxK
U2 - 10.1002/jmri.23946
DO - 10.1002/jmri.23946
M3 - 学術論文
C2 - 23197447
AN - SCOPUS:84880103555
SN - 1053-1807
VL - 38
SP - 161
EP - 167
JO - Journal of Magnetic Resonance Imaging
JF - Journal of Magnetic Resonance Imaging
IS - 1
ER -