Harada K, Igari D, Tanahashi Y
J Clin Ultrasound. 1979 Feb;7(1):45-9. doi: 10.1002/jcu.1870070113.
Gray scale transrectal ultrasongraphy provides refined visualization of the texture of the prostate and other intrapelvic organs. Diagnostic accuracy of the transrectal scan has been successfully registered at 91% in benign prostatic hyperplasia, 85% in cancer, 89% in prostatitis, and 88% in total prostatic scans. Furthermore, prostatic calculi were visible in the tomograms of both normal and abnormal prostates at a higher frequency than generally considered. Other applications of ultrasonic control, such as during transurethral resection or cryosurgery of the prostate and staging of bladder tumors, are profitable using the gray scale technique.
灰阶经直肠超声检查能清晰显示前列腺及其他盆腔内器官的结构。经直肠扫描在良性前列腺增生中的诊断准确率已成功达到91%，在癌症中为85%，在前列腺炎中为89%，在前列腺整体扫描中为88%。此外，前列腺结石在正常和异常前列腺的断层图像中出现的频率高于一般认为的情况。超声控制的其他应用，如在前列腺经尿道切除术或冷冻手术期间以及膀胱肿瘤分期时，使用灰阶技术是有益的。
