前列腺钙化灶结合经直肠动态能量多普勒血流显像在初筛前列腺癌中的作用

目的评估前列腺钙化灶结合经直肠动态能量多普勒血流显像在初筛前列腺癌患者的作用。方法回顾2009年7月至2012年3月间56例怀疑为前列腺癌在我院行经直肠动态能量多普勒血流显像超声检查患者的资料,分析其病理结果及经直肠动态能量多普勒血流显像超声图像特点。结果 37例(66.1%)患者诊断为前列腺癌,19例(33.9%)为前列腺增生。前列腺癌患者结节出现率较前列腺增生患者高(P<0.05),而两组患者前列腺体积大小(P>0.05)及钙化灶检出率无明显差异(P>0.05)。前列腺癌患者的前列腺被膜上、下动脉的收缩期最大流速(Vmax)和平均流速(Vmean)较前列腺增生患者明显增快(P<0.05),血流阻力指数(RI)增高(P<0.05),收缩期最大流速与舒张期最低流速之比(A/B值)明显增大(P<0.05),而舒张期最低流速(Vmin)和搏动指数(PI)无明显差异(P>0.05)。结论前列腺癌患者与前列腺增生患者的前列腺钙化灶分布各具特点。发现前列腺外周带有小强光点融合成团的钙化灶时,应考虑到早期前列腺癌的可能性,而经直肠动态能量多普勒检查血流显像超声检查有助于早期前列腺癌的鉴别。

The Role of Prostate Calcification Combined with the Rectum Dynamic Power Doppler Imaging in the Diagnosis of Early Prostate Cancer

Objectives To evaluate the role of prostatic calcification combined with rectum dynamic power Doppler imaging in screening for prostate cancer patients.Methods Review the data of 56 patients with suspected prostate cancer underwent ultrasound by rectum dynamic power Doppler imaging in our hospital from July 2009 to March 2012,analysis their pathological findings and characteristics of rectum dynamic power Doppler imaging.Results 56 patients,37（66.1%） patients were diagnosed with prostate cancer while 19（33.9%） cases of benign prostatic hyperplasia.Patients with prostate cancer had a higher nodules rate（P0.05）,but similar prostate volume size and calcification detection rate when compared to BPH patients（P0.05）.And patients with prostate cancer were associated with a faster flow（P0.05） of the peak systolic velocity（Vmax） and the average velocity（Vmean）,a higher vascular resistance index（P0.05）,an bigger ratio（P0.05） of peak systolic velocity and minimum diastolic flow（A/B value） of prostate membrane artery,while with a similar（P 0.05） lowest diastolic velocity（Vmin） and pulsatility index（PI） when compared to BPH patients.Conclusion There some different characteristics of prostate calcification distribution in patients with prostate cancer and BPH.And the possibility of early prostate cancer is considered when small bright point of integration into a group of calcification is found in prostate peripheral zone.And ultrasound by rectum dynamic power Doppler imaging is helpful for identifying early prostate cancer.