In-vivo proton magnetic resonance spectroscopy in adnexal lesions

To explore the in-vivo 1H- MR spectral features of adnexal lesions and to characterize the spectral patterns of various pathologic entities. Thirty-one patients with surgically and histopathologically confirmed adnexal lesions underwent short echo-time STEAM (stimulated echo acquisition method) 1H-...

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Bibliographic Details
Published in:Korean journal of radiology 2002, Vol.3 (2), p.105-112
Main Authors: Cho, Seong Whi, Cho, Soon Gu, Lee, Jung Hee, Kim, Hyung Jin, Lim, Myung Kwan, Kim, Jong Hwa, Suh, Chang Hae
Format: Article
Language:English
Subjects:
Adnexal Diseases - diagnosis
Adult
Aged
Cystadenoma, Mucinous - diagnosis
Diagnosis, Differential
Fatty acids
Female
Humans
Lipids
Localization
Magnetic Resonance Spectroscopy
Medical imaging
Middle Aged
Original
Ovarian Neoplasms - diagnosis
Ovaries
Patients
Pregnancy complications
Protons
Ratios
Spectrum analysis
Teratoma - diagnosis
Tumors
Ultrasonic imaging
Uterine Neoplasms - diagnosis
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Summary:To explore the in-vivo 1H- MR spectral features of adnexal lesions and to characterize the spectral patterns of various pathologic entities. 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. 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. 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.
ISSN:1229-6929
2005-8330
DOI:10.3348/kjr.2002.3.2.105