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目的:探讨经直肠实时组织弹性成像(TRTE)应变图分类方法联合经直肠超声(TRUS)在前列腺周围区病灶鉴别诊断中的价值。方法:对145例怀疑前列腺癌患者行TRUS检查与TRTE检查,根据病灶内的应变图特点,将其分为5级,并与病理结果对照。结果:145例中124例(52例恶性,72例良性)弹性成像质量好。应变图Ⅰ～Ⅴ级中恶性比例分别为6.8%、23.1%、31.3%、75.6%、100%。TRTE诊断前列腺周围区病灶的灵敏度、特异度、准确度、阳性预测值、阴性预测值分别为88.5%、70.8%、78.2%、68.7%和89.5%;而TRTE与TRUS联合诊断后分别为78.8%、86.1%、83.1%、80.4%和84.9%。结论:病灶内应变图分类联合TRUS在前列腺周围区病灶鉴别诊断中具有重要价值。
Objective: To investigate the value of transrectal real-time tissue elastography (TRTE) strain chart classification combined with transrectal ultrasound (TRUS) in the differential diagnosis of lesions around the prostatic region. Methods: TRUS and TRTE were performed in 145 patients with suspected prostate cancer. According to the characteristics of strain map, they were divided into 5 grades and compared with the pathological results. Results: Among 145 cases, 124 cases (52 cases of malignant, 72 cases of benign) elastography had good quality. Strain Ⅰ ~ Ⅴ grade malignant ratio were 6.8%, 23.1%, 31.3%, 75.6%, 100%. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of TRTE were 88.5%, 70.8%, 78.2%, 68.7% and 89.5% respectively, while those of TRTE and TRUS were 78.8% , 86.1%, 83.1%, 80.4% and 84.9%. Conclusion: The classification of intra-lesion strain maps combined with TRUS is of great value in the differential diagnosis of lesions around the prostate.