VAI TRÒ CỦA CỘNG HƯỞNG TỪ KHUẾCH TÁN VÀ ĐỘNG HỌC BẮT THUỐC TRONG CHẨN ĐOÁN PHÂN BIỆT U BUỒNG TRỨNG LÀNH TÍNH VÀ ÁC TÍNH CÓ THÀNH PHẦN MÔ ĐẶC TẠI BỆNH VIỆN K

Abstract

Objectives: The study aimed to evaluate the value of diffusion-weighted (DW) magnetic resonance and dynamic contrast enhancement in the differential diagnosis of benign and malignant ovarian tumors with solid tissue at K hospital. Methods: We analyzed magnetic resonance imaging (MRI) data of 108 ovarian tumors with solid tissue during the period from January 2022 to August 2023 at K hospital. The signal intensity of solid tissue on T2WI, the signal intensity of solid tissue on diffusion-weighted imaging (DWI), the mean ADC value, and the type of time-intensity curve (TIC) were evaluated and compared between benign and malignant ovarian tumors. Results: The high T2W signal intensity of solid tissue, high DW signal intensity of solid tissue, mean ADC value < 1,166 x 10^-3 mm²/s, type 2 and 3 TIC had a sensitivity and a specificity of 72,4%; 81,6%; 80,3%; 94,7% and 90,6%; 84,4%; 68,8%, 59,6% for predicting malignant tumors, respectively. The specificity of conventional and DW imaging combined was higher than that of conventional MRI alone (100% versus 90,6%), while the sensitivity was lower (50% versus 72,4%). The specificity of conventional and TIC type combined was higher than that of conventional MRI alone (96,9%, versus 90,6%), while the sensitivity was lower (69,7% versus 72,4%). Conclusion: Both the addition of DWI and TIC type to a conventional MRI improved the diagnostic specificity in the characterization of ovarian tumors with solid tissue.