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Correlations between the various methods of estimating prostate volume: transabdominal, transrectal, and three-dimensional US

Cited 11 time in Web of Science Cited 12 time in Scopus
Authors
Kim, Sun Ho; Kim, Seung Hyup
Issue Date
2008-04-04
Publisher
Korean Radiological Society
Citation
Korean J Radiol 2008;9(2):134-139
Keywords
Clinical Competence*Imaging, Three-DimensionalProstate/*ultrasonographyUltrasonography/*methodsUrinary Bladder/ultrasonography
Abstract
OBJECTIVE: To evaluate the correlations between prostate volumes estimated by transabdominal, transrectal, and three-dimensional US and the factors affecting the differences. MATERIALS AND METHODS: The prostate volumes of 94 consecutive patients were measured by both transabdominal and transrectal US. Next, the prostate volumes of 58 other patients was measured by both transrectal and three-dimensional US. We evaluated the degree of correlation and mean difference in each comparison. We also analyzed possible factors affecting the differences, such as the experiences of examiners in transrectal US, bladder volume, and prostate volume. RESULTS: In the comparison of transabdominal and transrectal US methods, the mean difference was 8.4 +/- 10.5 mL and correlation coefficient (r) was 0.775 (p < 0.01). The experienced examiner for the transrectal US method had the highest correlation (r = 0.967) and the significantly smallest difference (5.4 +/- 3.9 mL) compared to the other examiners (the beginner and the trained; p < 0.05). Prostate volume measured by transrectal US showed a weak correlation with the difference (r = 0.360, p < 0.05). Bladder volume did not show significant correlation with the difference (r = -0.043, p > 0.05). The comparison between the transrectal and three-dimensional US methods revealed a mean difference of 3.7 +/- 3.4 mL and the correlation coefficient was 0.924 for the experienced examiner. Furthermore, no significant difference existed between examiners (p > 0.05). Prostate volume measured by transrectal US showed a positive correlation with the difference for the beginner only (r = 0.405, p < 0.05). CONCLUSION: In the prostate volume estimation by US, experience in transrectal US is important in the correlation with transabdominal US, but not with three-dimensional US. Also, less experienced examiners' assessment of the prostate volume can be affected by prostate volume itself.
ISSN
1229-6929 (Print)
Language
English
URI
http://synapse.koreamed.org/Synapse/Data/PDFData/0068KJR/kjr-9-134.pdf

http://hdl.handle.net/10371/62743
DOI
https://doi.org/10.3348/kjr.2008.9.2.134
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College of Medicine/School of Medicine (의과대학/대학원)Radiology (영상의학전공)Journal Papers (저널논문_영상의학전공)
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