Acer Niyazi, Sofikerim Mustafa, Ertekin Tolga, Unur Erdoğan, Çay Mahmut, Öztürk Figen
Department of Anatomy, Erciyes University School of Medicine, 38000, Kayseri, Turkey.
Anat Sci Int. 2011 Jun;86(2):78-85. doi: 10.1007/s12565-010-0090-6. Epub 2010 Aug 24.
We compared three methods for the determination of prostate volume: prostate volume measured via transrectal ultrasonography (TRUS); the Cavalieri method for measuring physical sections; and volume by displacement. TRUS volumes were calculated by the prolate ellipsoid volume formula. Five patients underwent TRUS examination of the prostate prior to radical prostatectomy; specimens were measured when freshly excised. Mean prostate volume by fluid displacement, before formalin fixation was 52.8 ± 21.5 cm(3), and after formalin fixation 50.4 ± 20.9 cm(3). Volumes determined by the Cavalieri principle (point-counting and planimetry) were 47.8 ± 19.3 and 49.1 ± 20.5 cm(3); volume measured by TRUS was 42.9 ± 21.9 cm(3). Thus TRUS underestimated prostate volume by 21.4%, but excellent agreement was found between actual volume and point counting techniques. We believe that the classic ellipsoid formula is inadequate for determining prostate volume.
经直肠超声检查（TRUS）测量的前列腺体积；用于测量实体切片的卡瓦列里方法；以及排水法测定的体积。TRUS体积通过长椭球体体积公式计算。五名患者在前列腺根治术前接受了前列腺的TRUS检查；标本在刚切除时进行测量。福尔马林固定前，通过排水法测得的平均前列腺体积为52.8±21.5立方厘米，福尔马林固定后为50.4±20.9立方厘米。通过卡瓦列里原理（点计数和平面测量）测定的体积分别为47.8±19.3立方厘米和49.1±20.5立方厘米；通过TRUS测量的体积为42.9±21.9立方厘米。因此，TRUS低估了前列腺体积21.4%，但实际体积与点计数技术之间存在极好的一致性。我们认为经典的椭球体公式不足以确定前列腺体积。
