al Salim A, Murchison P J, Rana A, Elton R A, Hargreave T B
Department of Urology, Western General Hospital, Edinburgh, UK.
Br J Urol. 1995 Nov;76(5):632-5. doi: 10.1111/j.1464-410x.1995.tb07792.x.
To investigate the accuracy of three commonly used orchidometers (Prader, Takihara punched-ring and Seager) compared with ultrasonography (US) for the measurement of testicular size.
A prospective, randomized, blinded trial to compare three methods of measuring testicular volume was performed, involving 31 men attending the Fertility Problems Clinic for the assessment of fertility. Testicular size was measured independently by three doctors and compared with estimates obtained independently by US in the Radiology department.
The Prader and Takihara punched-ring orchidometers consistently overestimated testicular size compared with that estimated by US. A substantial proportion of the measurements obtained using the Prader orchidometer were more than twice the value estimated by US.
The Prader and Takihara orchidometers were useful in comparing different testicular sizes but the absolute values obtained would probably be overestimated in many clinical situations. The Seager orchidometer, although more difficult to use, agreed best with the US estimates.
比较三种常用睾丸测量器（普拉德、泷原冲孔环式和西格）与超声检查（US）测量睾丸大小的准确性。
进行了一项前瞻性、随机、盲法试验，以比较三种测量睾丸体积的方法，涉及31名到生育问题诊所评估生育能力的男性。由三名医生独立测量睾丸大小，并与放射科通过超声独立获得的估计值进行比较。
与超声估计值相比，普拉德和泷原冲孔环式睾丸测量器始终高估睾丸大小。使用普拉德睾丸测量器获得的很大一部分测量值超过超声估计值的两倍。
普拉德和泷原睾丸测量器在比较不同睾丸大小方面有用，但在许多临床情况下获得的绝对值可能会被高估。西格睾丸测量器虽然使用起来更困难，但与超声估计值最为一致。
