GIÁ TRỊ CỦA CỘNG HƯỞNG TỪ 1.5 TESLA TRONG CHẨN ĐOÁN UNG THƯ CỔ TỬ CUNG TÁI PHÁT VÙNG

Abstract

Purpose: This study aims to evaluate value of magnetic resonance imaging 1.5 Tesla for diagnosis of cervical cancer recurrent. Material and Methods: The prospective study was conducted on 29 patients with 33 lesions at the National Cancer Hospital from August 2021 to August 2022. Results of magnetic resonance imaging (MRI) were compared with pathological results as the gold standard. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy were calculated for conventional MRI and combined conventional MRI and DWI. We evaluated the ADC and compared median ADC (mADC) of recurrent lesions and benign lesions. Results: The accuracy of diagnosing recurrent lesions was highest at combined conventional MRI and DWI (90,9%) than at conventional MRI (81,8%). Median ADC of recurrent lesions (0,95±0,14 x 10⁻³mm²/s) was significantly lower than benign lesions (1,34±0,20x10⁻³mm²/s) (p<0,01). Conclusion: Conventional MR with DWI significantly increases the diagnostic accuracy for suspected cervical cancer local recurrence. The statistically significant difference between the ADC of recurrent lesions and benign lesions suggests using ADC value as an invasive indicator in prognosis of cervical cancer recurrent.