Quantitative analysis of ovarian cysts and tumors by using T2 star mapping

Nozomi Takahashi, Osamu Yoshino, Emi Hayashida, Masanobu Nakamura, Masaaki Hori, Shunsuke Iwahata, Takashi Onda, Nobuya Unno, Tomoyuki Fujii, Yutaka Osuga
Journal of Obstetrics and Gynaecology Research · 2019 · vol. 46(1) , pp. 140–146 · doi:10.1111/jog.14157 · PMID:31742851 · W2990956141
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Abstract

AIM: The aim of this study was to investigate the efficacy of T2 star (T2*) mapping in diagnosing ovarian cysts/ tumors. METHODS: diameter circle, was set as much as possible inside ovarian tumors/cysts to measure T2*values, and mean T2* values were compared in ovarian cyst/tumor types, retrospectively. Diagnoses of 40 ovarian cysts/tumors were determined by pathological reports, in which 17 were endometriomas, 13 were mature cystic teratomas, 6 were mucinous cystadenomas and 4 were serous cystadenomas. RESULTS: The average T2* values of endometrioma was 56.8 ± 8.7 ms (mean ± SEM), which was significantly lower than that of mucinous cystadenoma (334.2 ± 58.5 ms, mean ± SEM) or serous cystadenoma (237.0 ± 45.4 ms, mean ± SEM). There was no difference in T2* values between endometrioma and mature cystic teratoma (64.1 ± 22.6 ms, mean ± SEM). Receiver operating characteristics curve analysis revealed that optimal cut-off value for differential diagnosis of endometrioma and mucinous or serous cystadenoma was 149.2 ms as T2* value, which has an area under the curve of 0.95 (sensitivity = 92.4%, specificity = 78.6%). CONCLUSION: T2* values were useful to diagnose various types of ovarian cyst/tumor.

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Condition tags

endometriosisendometrioma

MeSH descriptors

Cystadenoma, Serous Dermoid Cyst Endometriosis Magnetic Resonance Imaging Ovarian Cysts Ovarian Neoplasms Adult Area Under Curve Cystadenoma, Serous Dermoid Cyst Diagnosis, Differential Endometriosis Female Humans Magnetic Resonance Imaging Magnetic Resonance Imaging Middle Aged Ovarian Cysts Ovarian Neoplasms Reproducibility of Results

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