Frentzel-Beyme B
Radiologische Gemeinschaftspraxis Berlin.
Radiologe. 1994 Mar;34(3):109-15.
Transrectal ultrasound (TRUS) with a high frequency (about 7 MHz) probes offers imaging of the zonal anatomy of the prostate and the typical changes caused to it by diseases. The carcinoma is hypoechogenic and can be diagnosed by TRUS more often than by digital rectal palpation. Ventrally localized carcinoma can also be detected. Preoperative staging is more accurate than with any other method. TRUS-guided transrectal biopsy with semi-automatic biopsy systems is safe, has no complications and is more accurate than a digitally guided biopsy. The volume of an adenoma and its nature (benign/malignant) can be evaluated very precisely. Prostatitis and/or vesiculitis induce typical changes in echogenicity, so that these diseases can only be diagnosed by TRUS. However, good equipment still cannot yield reliable diagnoses unless it is operated by experienced examiners.
使用高频（约7兆赫）探头的经直肠超声（TRUS）可对前列腺的分区解剖结构以及疾病对其造成的典型变化进行成像。癌组织呈低回声，通过TRUS诊断癌的几率比直肠指诊更高。位于腹侧的癌也能被检测到。术前分期比其他任何方法都更准确。使用半自动活检系统进行TRUS引导下的经直肠活检是安全的，没有并发症，且比数字引导活检更准确。腺瘤的体积及其性质（良性/恶性）能够得到非常精确的评估。前列腺炎和/或精囊炎会引起回声性的典型变化，因此这些疾病只能通过TRUS进行诊断。然而，除非由经验丰富的检查人员操作，否则精良的设备也无法做出可靠的诊断。
