12/28/2022 0 Comments Prostate volume calculator![]() When analyzed by prostate size, limits of agreement for prostates 100 cm 3 are +14/-22 cm 3 and +65/-58 cm 3, respectively.ĬONCLUSIONS: There is strong correlation between PUS and TRUS, suggesting that PUS is a useful tool for measuring prostate volume. Bland-Altman analysis showed 95% limits of agreement were 34/-35 cm 3. Pearson correlation coefficient was 0.90, and ICC was 0.93 overall and >0.8 for all specific subgroups analyzed. ![]() The mean of the volume differences, Vol PUS - vol TRUS, was (-0.2 ± 2.2) cm 3, with 161 (60%) patients having a ≤ 10mL difference between PUS and TRUS estimations. The average value obtained by PUS was (63 ± 4.8) cm 3 and by TRUS (64 ± 4.9) cm 3. Median time between each US modality was 31 days, with 126 (52%) patients having TRUS within 31 days. Median PSA value prior to PUS was 7.6 ng/mL. Median age was 63 years old, median BMI was 28 kg/m 2, 50 (20%) were white, 120 (49%) were black, and 41 (17%) were Hispanic. RESULTS: A total of 244 patients had both PUS and TRUS. This analysis was done for the whole sample population as well as for specific groupings according to BMI, prostate size, and time between exams. PUS and TRUS were compared by calculating the Pearson correlation coefficient and interclass correlation coefficient (ICC), and agreement between modalities assed using the Bland Altman analysis. Prostate volume was derived from ellipsoid volume calculation using dimensions measured on US. METHODS: We performed a single-center, retrospective study of 244 patients with PUS and TRUS prostate sizing between Januand August 31, 2017. This study aims to compare the accuracy of PUS to TRUS sizing and is the largest study to date to do so. ![]() ![]() Two methods of ultrasound used are transabdominal pelvic (PUS) and transrectal (TRUS) ultrasound, with the latter considered to be more accurate, but more invasive. Imaging to estimate prostate volume includes ultrasound (US), Computed Tomography (CT), and Magnetic Resonance Imagining (MRI) however, US stands apart as a fast, radiation-free, and cost-effective modality. INTRODUCTION AND OBJECTIVES: Prostate size is an important metric utilized in the management of many urologic diseases. Barbosa, MDīoston University Medical Center, Boston, MA Comparison of Transabdominal and Transrectal Ultrasound for Sizing of the Prostate ![]()
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