title: A comparison of uterine peristalsis in women with normal uteri and uterine leiomyoma by cine magnetic resonance imaging.
abstract: OBJECTIVE
  The non-pregnant uterus shows wave-like activity (uterine peristalsis). This pilot study was intended to determine: (1) whether uterine peristalsis during the menstrual cycle is detectable by cine magnetic resonance imaging (MRI); (2) the effects of leiomyoma on uterine peristalsis.
  
  
  METHODS
  Mid-sagittal MRI was performed sequentially with T2-weighted single-shot fast spin-echo (SSFSE) in 3 normal ovulatory volunteers and 19 premenopausal women with uterine leiomyoma. Direction and frequency of movement of the junctional zone were evaluated using a cine mode display.
  
  
  RESULTS
  Junctional zone movement was identified in all subjects. Direction of uterine peristalsis in normal volunteers was fundus-to-cervix during menstruation, cervix-to-fundus during the periovulatory phase, and isthmical during the mid- and late-luteal phases. Abnormal peristaltic patterns were detected in three of five patients with uterine leiomyoma during menstruation and in the mid-luteal phase of the cycle, respectively.
  
  
  CONCLUSIONS
  Cine MRI is a novel method for evaluation of uterine peristalsis. Results of this pilot study suggest that abnormal uterine peristalsis during menstruation and the mid-luteal phase might be one of the causes of hypermenorrhea and infertility associated with uterine leiomyoma.
authors.affiliation: Department of Obstetrics and Gynecology, University of Fukui, 23-3 Shimoaizuki, Matsuoka, Fukui 910-1193, Japan. orisaka@fmsrsa.fukui-med.ac.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Orisaka
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Kurokawa
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Shukunami
authors.forename: Sanae
authors.initials: S
authors.lastname: Orisaka
authors.forename: Mika T
authors.initials: MT
authors.lastname: Fukuda
authors.forename: Akiko
authors.initials: A
authors.lastname: Shinagawa
authors.forename: Shin
authors.initials: S
authors.lastname: Fukuda
authors.forename: Noboru
authors.initials: N
authors.lastname: Ihara
authors.forename: Hiroki
authors.initials: H
authors.lastname: Yamada
authors.forename: Harumi
authors.initials: H
authors.lastname: Itoh
authors.forename: Fumikazu
authors.initials: F
authors.lastname: Kotsuji
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000503:physiopathology*; D019028:Magnetic Resonance Imaging, Cine; D008597:Menstrual Cycle / Q000502:physiology; D010528:Peristalsis / Q000502:physiology*; D010865:Pilot Projects; D014594:Uterine Neoplasms / Q000503:physiopathology*; D014599:Uterus / Q000503:physiopathology*