THE ROLE OF ULTRASOUND AND MRI IN THE DIAGNOSIS OF OVARIAN TUMOURS

Abstract

Background: Ovarian cancer is the fth leading cause of cancer related death in the USA, and has the highest mortality rate due to late diagnosis. The most common modalities used in diagnoses are B-Mode USG, Conventional MRI and DW-MRI. This study aims to statistically analyze and compare the sensitivity, specicity and measurement of agreement for these modalities. From March 2019 to September 2020, 103 pat Method: ients with ovarian masses underwent radiodiagnostic testing with USG and MRI, and subsequently 85 patients underwent surgery and the gold standard histopathological examination. The radiologic diagnosis was correlated with the histopathologic diagnosis for these patients and the sensitivities, specicities and area under the ROC curve were calculated. The Results: area under ROC curve increased in the following order: B- Mode USG < B-Mode USG & Doppler combined < conventional MRI < DW-MRI. The measurement of agreement Kappa increased in the following order: B- Mode USG < B-Mode USG & Doppler combined < conventional MRI < DW-MRI. The study showed that addition of Doppler to B-Mode USG reduced its sensitivity and NPV. Both USG and conventional MRI were found to have comparable sensitivities. While DW-MRI is superior t Conclusion: o other modalities in its high specicity in diagnosing ovarian tumors, USG has equal sensitivity and can be used for initial presumptive diagnosis in patients with suspected ovarian malignancies.