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

Nozomi Takahashi, Osamu Yoshino, Yoshino O, Emi Hayashida, Hayashida E, Masanobu Nakamura, Nakamura M, Hori M, Masaaki Hori, Iwahata S, Shunsuke Iwahata, Onda T, Takashi Onda, Unno N, Nobuya Unno, Tomoyuki Fujii, Fujii T, Yutaka Osuga, Osuga Y
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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T2* mapping, an MRI technique, effectively differentiates endometriomas from mucinous and serous cystadenomas in ovarian tumors by analyzing quantitative T2* values.

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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: Pelvic magnetic resonance examinations including T2*WI were performed before surgery in 35 patients. The region of interest, consisted of a 10 mm2 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 Adult Area Under Curve Area Under Curve Cystadenoma, Serous Cystadenoma, Serous Dermoid Cyst Dermoid Cyst Diagnosis, Differential Diagnosis, Differential Endometriosis Endometriosis Female Female

Citation neighborhood (2-hop)

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. Outer rings show 2-hop neighbours — papers reached through the immediate citers/citees. [ collapse to 1-hop ]

References (13)

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