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Changes of the normal ovary during menstrual cycle in reproductive age on the diffusion-weighted image.
MedLine Citation:
PMID:  22592617     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: The objective of this study was to investigate changes in magnetic resonance findings of the normal ovary during menstrual cycle on diffusion-weighted image (DWI).
METHODS: Magnetic resonance imaging was performed in 9 healthy females at the menstrual, periovulatory, and luteal phases using a 1.5-T unit. Signal intensity (SI) of the ovary on DWI with a b value of 1000 s/mm was visually scored. The ovary-to-muscle contrast ratios on DWI and apparent diffusion coefficient (ADC) values were also evaluated.
RESULTS: All the ovaries were identified, and higher SI than the nerve root was identified in 70% (38/54) of the ovaries, although visual scores did not show significant difference among menstrual phases. The mean ADC values (10 mm/s) were 1.71 (SD, 0.27), 1.71 (SD, 0.22), and 1.67 (SD, 0.19) in menstrual, periovulatory, and luteal phases, respectively. No phase-dependent change was observed in contrast ratios and ADC values.
CONCLUSION: The normal ovary in fertile period shows high SI enough to be identified on DWI, and observed values are independent of the menstrual cycle.
Authors:
Nobuko Morisawa; Aki Kido; Takashi Koyama; Tomohisa Okada; Masako Kataoka; Shigeaki Umeoka; Koji Fujimoto; Ken Tamai; Kaori Togashi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of computer assisted tomography     Volume:  36     ISSN:  1532-3145     ISO Abbreviation:  J Comput Assist Tomogr     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-05-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703942     Medline TA:  J Comput Assist Tomogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  319-22     Citation Subset:  IM    
Affiliation:
From the *Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto; †Department of Diagnostic Radiology, Osaka Red Cross Hospital, Osaka; and ‡Department of Radiology, Kyoto Katsura Hospital, Kyoto, Japan.
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