Open AccessStudy of uterine kinetics in nonpregnant women using cine‐mode magnetic resonance imaging
Author(s) -
Nakashima Akira,
Komesu Isamu,
Sakumoto Tetsuro,
Hamakawa Hakuraku,
Terada Yoko,
Takayama Hisako,
Kamiyama Sigeru,
Higashi Masahiro,
Ishigaki Keiko,
Nakaza Aritoshi,
Ushijima Kimio,
Tokunaga Yoshimitsu
Publication year - 2019
Publication title -
reproductive medicine and biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 22
eISSN - 1447-0578
pISSN - 1445-5781
DOI - 10.1002/rmb2.12295
Subject(s) - ovulation , follicular phase , medicine , magnetic resonance imaging , luteal phase , uterus , cervix , menstrual cycle , menstruation , gynecology , hormone , radiology , cancer
Purpose To evaluate the uterine kinetics in each phase of the menstrual cycle when observed in detail using cine‐mode magnetic resonance imaging (MRI) of sagittal and transverse plane images. Methods Seven volunteers with a history of multiple natural pregnancies and deliveries were enrolled from January 2017 to May 2017. The kinetic parameters (depth, frequency, and direction) of uterine muscle contractions were evaluated in cine‐mode MRI. Results Strong contractions from the uterine cornua to cervix were detected during menstruation. In the late follicular phase, the frequency of opposing contractions from the cervix and uterine cornua increased. Immediately before ovulation, contractions from the cervix reached the uterine fundus. After ovulation, opposing contractions returned. These contractions gradually decreased in the mid‐luteal phase, while fine contractions from the cervix to the middle of the uterine body were frequently observed until 7 days after ovulation. Few contractions were observed in the implantation phase. Conclusions Our data suggest that the uterine kinetics change in each phase of the menstrual cycle in accordance with the purpose of the uterus in each phase. Further, cine‐mode MRI studies of each phase are needed to assess the relationships between uterine kinetics and infertility.