Tanaka Y, et al. - In this prospective study, researchers analyzed MRI values and hemoglobin (Hb) and total protein (TP) concentrations as seen in ovarian tumors. For this investigation, 182 samples from 167 cystic ovarian tumors were studied. Compared to mucinous cystadenomas, TP and Hb concentrations were higher in the contents of endometriomas, leading to lower T₁ and T₂ values. Compared to benign tumors, TP and Hb concentrations were higher in the cystic contents of borderline and malignant tumors in the nonendometrioma group, also leading to lower T₁ and T₂ values. Compared to endometriomas, the cystic contents of borderline and malignant tumors in the endometrioma group exhibited lower TP and Hb concentrations, leading to higher T₁ and T₂ values.