The Mechanism Causing High-signal Intensity on Diffusion-weighted Imaging in Adnexal Torsion: Two Case Reports

We report two cases with adnexal torsion to assess the mechanism of very strong signal intensity in ovarian lesions on DW imaging using MR imaging such as T2*-weighted imaging. MR imaging findings of the cases suggest that the very strong signal intensity on DW imaging is contributed to cytotoxic ed...

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Bibliographic Details
Published in:	Magnetic Resonance in Medical Sciences Vol. 16; no. 3; pp. 262 - 264
Main Authors:	Fujii, Shinya, Mukuda, Naoko, Nosaka, Kanae, Fukunaga, Takeru, Inoue, Chie, Ogawa, Toshihide
Format:	Journal Article
Language:	English
Published:	Japan Japanese Society for Magnetic Resonance in Medicine 01-01-2017
Subjects:	Adnexal Diseases - diagnostic imaging Aged Case Report Diffusion Magnetic Resonance Imaging - methods diffusion-weighted magnetic resonance imaging Edema - diagnostic imaging Female Humans magnetic resonance imaging Magnetic Resonance Imaging - methods Middle Aged ovarian Ovarian Diseases - diagnostic imaging ovary T2-weighted imaging Torsion Abnormality - diagnostic imaging magnetic resonance imaging ovary T2-weighted imaging ovarian diffusion-weighted magnetic resonance imaging
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Summary:	We report two cases with adnexal torsion to assess the mechanism of very strong signal intensity in ovarian lesions on DW imaging using MR imaging such as T2*-weighted imaging. MR imaging findings of the cases suggest that the very strong signal intensity on DW imaging is contributed to cytotoxic edema with or without vasogenic edema, as well as oxyhemoglobin or extracellular methemoglobin.
Bibliography:	ObjectType-Case Study-2 SourceType-Scholarly Journals-1 ObjectType-Feature-4 content type line 23 ObjectType-Report-1 ObjectType-Article-3
ISSN:	1347-3182 1880-2206
DOI:	10.2463/mrms.cr.2016-0105