Topic
Orchidometer
About: Orchidometer is a research topic. Over the lifetime, 80 publications have been published within this topic receiving 2453 citations.
Papers published on a yearly basis
Papers
TL;DR: The results of this study have shown that measuring the testicular volume by ultrasonography is more accurate than by the Prader orchidometer, and the formula L x W x H x 0.71 was the most accurate for calculating thetesticular volume.
227 citations
TL;DR: In this paper, the accuracy and reproducibility of ultrasonographic estimation of testicular volume was evaluated on examination of 14 testes from patients at autopsy without any systematic under- or over-estimation.
Abstract: Summary
Ultrasonography of the scrotum is a valid and safe method for differentiating testicular and extratesticular disease. In the present study the accuracy and reproducibility of ultrasonographic estimation of testicular volume was evaluated. A high correlation (r= 0.992) between actual testicular volume (measured by weighing and water displacement) and the volume determined by ultrasonography was found on examination of 14 testes from patients at autopsy without any systematic under- or over-estimation. The ultrasound method proved to be highly reproducible with a coefficient of variation of 7.0 ± 0.7%. Using different ultrasound scanners did not significantly influence the results obtained. The comparison of Prader orchidometer measurements, performed by four different clinical investigators, and ultrasonography in 256 patients revealed a significant correlation of 0.91, but the degree of correlation was dependent on the investigator's clinical experience. Volume estimates by comparative palpation appear to be valuable in most clinical settings. Ultrasonography provides an excellent tool for determining testicular volume when objective, accurate and reproducible measurements of testicular volume are required.
206 citations
TL;DR: US methods of testicular volume measurement are more accurate and precise than orchidometry and should be used in clinical practice.
Abstract: PURPOSE: To compare the accuracy and precision of orchidometer and ultrasonographic (US) measurements of testicular volume in a canine model. MATERIALS AND METHODS: Volume measurements of 18 canine testes were obtained by using Prader and Rochester orchidometers. Testes were scanned with two linear-array US transducers with imaging frequencies of 6–13 MHz and 5–10 MHz. For each transducer, testicular volumes were calculated by using three formulas: length (L) × width (W) × height (H) × 0.52, L × W2 × 0.52, and L × W × H × 0.71. Testes were weighed following bilateral orchiectomies. True testicular volume was determined by using the formula volume = weight/density. Paired t tests were used to assess whether mean measurement biases differed significantly from zero. The relationship between true and measured volume was evaluated with a linear regression model. RESULTS: US volume measurements demonstrated lower variability and better linear fit compared with orchidometry (R2 = 0.75–0.90 vs R2 = 0.14–0.38). Th...
177 citations
TL;DR: Volume measurement by the Prader orchidometer, as generally used in the practice by doctors, can be used as a valid parameter for monitoring testicular growth.
Abstract: Background/Aims: We obtained reference data for testicular volume measured by ultrasound in asymptomatic boys aged 0.5–18 years. In addition, we assessed the validity of the Prader
170 citations
TL;DR: Results of testicular atrophy correlated with duration of symptoms and operative findings and subsequent atrophy was the rule in all cases of surgical detorsion in which torsion lasted more than 24 hours and viability of the testis was questionable.
127 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 4 |
| 2019 | 3 |
| 2018 | 4 |
| 2017 | 1 |
| 2016 | 4 |