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Reprod Med Biol. 2019 Aug 08;18(4):370-377. doi: 10.1002/rmb2.12295. eCollection 2019 Oct.

Study of uterine kinetics in nonpregnant women using cine-mode magnetic resonance imaging.

Reproductive medicine and biology

Akira Nakashima, Isamu Komesu, Tetsuro Sakumoto, Hakuraku Hamakawa, Yoko Terada, Hisako Takayama, Sigeru Kamiyama, Masahiro Higashi, Keiko Ishigaki, Aritoshi Nakaza, Kimio Ushijima, Yoshimitsu Tokunaga

Affiliations

  1. Soranomori Clinic Yaese Japan.
  2. Department of Obstetrics and Gynecology Kurume University of Medicine Fukuoka Japan.

PMID: 31607797 PMCID: PMC6780040 DOI: 10.1002/rmb2.12295

Abstract

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.

© 2019 The Authors. Reproductive Medicine and Biology published by John Wiley & Sons Australia, Ltd on behalf of Japan Society for Reproductive Medicine.

Keywords: cine‐mode magnetic resonance imaging; embryo transfer; smooth muscle cells; uterine contraction; uterine muscle

Conflict of interest statement

Conflict of interest: The authors declare no conflict of interest. Human rights statements and informed consent: All the procedures were followed in accordance with the ethical standards of the respon

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