Accuracy and repeatability of prostate volume measurements by transrectal ultrasound

accuracy and repeatability of refractive error measurements by photorefractometry

purpose: to determine the accuracy of photorefraction and autorefraction as compared to cycloautorefraction and to detect the repeatability of photorefraction. methods: this diagnostic study included the right eyes of 86 children aged 7‑12 years. refractive status was measured using photorefraction (plusoptix so4, gmbh, nürnberg, germany) and autorefraction (topcon rm800, usa) with and without ...

Transrectal Ultrasound-guided Prostate Brachytherapy

comparison of prostate and bladder volume measurements from mri and pre- and post-mri ultrasound images

background : safe dose escalation is highly desirable in radiotherapy for prostate cancer. prostate displacement due to bladder filling can be significant, so improved targeting of the prostate by ultrasound imaging potentially allows for a reduction in the target margin and consequently less toxicity. this study estimates the accuracy of ultrasound for prostate and bladder volume measurements ...

Accuracy and Repeatability of Refractive Error Measurements by Photorefractometry

PURPOSE To determine the accuracy of photorefraction and autorefraction as compared to cycloautorefraction and to detect the repeatability of photorefraction. METHODS This diagnostic study included the right eyes of 86 children aged 7-12 years. Refractive status was measured using photorefraction (PlusoptiX SO4, GmbH, Nürnberg, Germany) and autorefraction (Topcon RM800, USA) with and without ...

Application of Bland-Altman Method in Comparing Transrectal and Transabdominal Ultrasonography for Estimating Prostate Volume

Background: Estimating prostate volume using less invasive transabdominal ultrasonography (TAUS) instead of transrectal ultrasonography (TRUS) is of interest in terms of identifying their agreement level. Previous reports on this subject, applied general correlation coefficient as the level of agreement. This study uses Bland-Altman method to quantify TAUS and TRUS agreement on estimating prost...