磁共振成像-弥散加权成像诊断良恶性卵巢肿瘤的临床价值

目的 探讨磁共振成像-弥散加权成像(MRI-DWI)诊断良恶性卵巢肿瘤的临床价值.方法 对经手术病理确诊为卵巢占位性病变的100例患者的MRI常规扫描参数及DWI图像表现进行分析.比较良恶性病变的病变最大径、表观扩散系数(ADC)值、肿瘤位置、边界、囊实性、囊壁/分隔、T1及T2信号均匀性,并进行Logis-tic回归...

Magnetic resonance imaging-diffusion weighted imaging in diagnosis of benign and malignant ovarian tumors

Objective To explore the clinical value of magnetic resonance imaging(MRI)-diffusion weighted imaging(DWI)in the diagnosis of benign and malignant ovarian tumors.Method The routine MRI scanning parameters and DWI of 100 patients with ovarian space-occupying lesions diagnosed by operation and pathology were analyzed;the maximum diameter of the lesion,apparent diffusion coefficient(ADC),tumor location,boundary,cystic solid,cyst wall/septum,T1 and T2 signal uniformity were compared;the Logistic regresssion analysis was carried out and receiver operating characteristic(ROC)curve were drawn to compare the area under the curve(AUC)of the influencing factors.Result 69 cases were benign and 31 cases malignant,including 85 benign lesions and 43 malignant lesions among 100 patients with ovarian tumors.There were significant differences for the maximum diameter,ADC value,cyst wall/septum,cystic solid and T2 signal uniformity between benign and malignant lesions(P<0.01).ADC value was negatively correlated with benign and malignant lesions(P<0.05),and cyst wall/septum,cystic solid and T2 signal uniformity were the risk factors of malignant lesions(P<0.01).The AUC of ADC value,cyst wall/septum,cystic solid,T2 signal uniformity were 0.840,0.672,0.560,and 0.643,respectively.The critical value of ADC for the diagnosis of benign and malignant ovarian tumors was 1.65×10^-3mm²/s,and the corresponding sensitivity and specificity were 92.01%and 85.39%,respectively.Conclusion MRI-DWI of ovarian malignant tumors show high signal intensity,and the ADC value of ovarian malignant tumors is significantly lower than that of benign ovarian tumors.The value of DWI in the diagnosis of benign and malignant ovarian tumors is higher than that of MRI.