title: Normal ovaries and functional cysts: MR appearance.
abstract: OBJECTIVE
  To evaluate characteristics of functional cysts and stroma in normal ovaries on magnetic resonance (MR) images.
  
  
  METHODS
  Fifty-six women with at least one surgically proved normal ovary underwent MR imaging. Gadolinium-enhanced fat-saturated images were obtained in 32 patients. Ovary and cyst sizes and the number of cysts were recorded. Signal intensity was rated for the ovarian stroma and cysts.
  
  
  RESULTS
  On T2-weighted images, 57 of 82 (70%) ovaries showed a zonal differentiation. Ovarian stroma enhanced less than myometrium in 30 of 43 cases. Zonal anatomy and degree of enhancement correlated with patient age and menopausal status. Cyst walls had lower signal intensity on T2-weighted images than ovarian stroma in 49 of 74 cases and showed greater enhancement in 21 of 35.
  
  
  CONCLUSIONS
  Most normal premenopausal ovaries exhibit distinct features of a zonal anatomy, whereas postmenopausal ovaries do not. Cysts with discrete enhancing walls were numerous and were found in all age groups.
authors.affiliation: Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, PA 19107-5244, USA.
authors.forename: E K
authors.initials: EK
authors.lastname: Outwater
authors.forename: D G
authors.initials: DG
authors.lastname: Mitchell
mesh_terms: D000328:Adult; D000368:Aged; D003287:Contrast Media; D004338:Drug Combinations; D005260:Female; D005497:Follicular Cyst / Q000175:diagnosis*; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D008536:Meglumine; D008875:Middle Aged; D009942:Organometallic Compounds; D010048:Ovarian Cysts / Q000175:diagnosis*; D010053:Ovary / Q000033:anatomy & histology* / Q000473:pathology; D004369:Pentetic Acid / Q000031:analogs & derivatives; D017698:Postmenopause
chemical_list: D003287:Contrast Media; D004338:Drug Combinations; D009942:Organometallic Compounds; D008536:Meglumine; D004369:Pentetic Acid; D019786:Gadolinium DTPA