Siêu âm đàn hồi trong chẩn đoán ung thư tuyến tiền liệt: đánh giá bước đầu qua 101 trường hợp

Transrectal sonoelastography in detection of prostatecancer: initial assessment of 101 cases

SUMMARY

Purpose Evaluate the efficiency of transrectal strain elastography (SE) and transrectal B-mode ultrasonography (TRUS) in determining prostate cancer. Material & Methods From 20/6/2015 to 10/9/2015, There are 101 patients with PSA level of higher 4ng/ml have been selected. Abnormal echo regions in prostate were found via conventional TRUS in those patients, then Abnormal echo regions would be evaluated by real-time strain ultrasound elastography. Patients have undergone six core biopsies by transperineal approach. Experimental studies Results Comparising between 3 methods: B-mode TRUS, strain elastography and DRE about sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). (table)

Table.Comparising between 3 methods: B-mode TRUS, strain elastography and DRE. Sensitivity (%) Specificity (%) PPV (%) NPV (%) B-mode 88.5 55.1 67.6 81.8 Strain-elasto 94.2 65.3 74.2 91.4 DRE 69.2 98 98 75

Conclusions: Sonoelastographyprovidesmore information to detect prostate cancer and biopsy guidance. SE reached a higher sensitivity and specificity than B-mode US in the detection prostate cancer.Strain ultrasound elastography can be used as routine as colour Doppler.

Key words: sonelastography, strain ultrasound elastography, prostate cancer, ultrasound.