In-vivo proton magnetic resonance spectroscopy in adnexal lesions.

Abstract:

OBJECTIVE:To explore the in-vivo 1H- MR spectral features of adnexal lesions and to characterize the spectral patterns of various pathologic entities. MATERIALS AND METHODS:Thirty-one patients with surgically and histopathologically confirmed adnexal lesions underwent short echo-time STEAM (stimulated echo acquisition method) 1H- MR spectroscopy, and the results obtained were analysed. RESULTS:The methylene present in fatty acid chains gave rise to a lipid peak of 1.3 ppm in the 1H- MR spectra of most malignant tumors and benign teratomas. This same peak was not observed, however, in the spectra of benign ovarian epithelial tumors: in a number of these, a peak of 5.2 ppm, due to the presence of the olefine group (-CH=CH-) was noted. The ratios of lipid peak at 1.3 ppm to water peak (lipid/water ratios) varied between disease groups, and in some benign teratomas was characteristically high. CONCLUSION:An intense lipid peak at 1.3 ppm is observed in malignant ovarian tumors but not in benign epithelial tumors. 1H- MRS may therefore be helpful in the differential diagnosis of adnexal lesions.

journal_name

Korean J Radiol

authors

Cho SW,Cho SG,Lee JH,Kim HJ,Lim MK,Kim JH,Suh CH

doi

10.3348/kjr.2002.3.2.105

subject

Has Abstract

pub_date

2002-04-01 00:00:00

pages

105-12

issue

2

eissn

1229-6929

issn

2005-8330

pii

2002v3n2p105

journal_volume

3

pub_type

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