经腹、经直肠及三维超声等多种前列腺体积估计方法之间的相关性。

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

作者信息

Kim Sun Ho, Kim Seung Hyup

机构信息

Department of Radiology, DongGuk University International Hospital, Goyang, Korea.

出版信息

Korean J Radiol. 2008 Mar-Apr;9(2):134-9. doi: 10.3348/kjr.2008.9.2.134.

DOI:10.3348/kjr.2008.9.2.134

PMID:18385560

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2627229/

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.

摘要

目的

评估经腹超声、经直肠超声及三维超声所估算的前列腺体积之间的相关性，以及影响这些差异的因素。

材料与方法

对94例连续患者的前列腺体积分别采用经腹超声和经直肠超声进行测量。接下来，对另外58例患者的前列腺体积分别采用经直肠超声和三维超声进行测量。我们评估了每次比较中的相关程度和平均差异。我们还分析了可能影响差异的因素，如经直肠超声检查者的经验、膀胱体积和前列腺体积。

结果

在经腹超声与经直肠超声方法的比较中，平均差异为8.4±10.5 mL，相关系数（r）为0.775（p<0.01）。与其他检查者（初学者和经过培训者）相比，经直肠超声方法经验丰富的检查者相关性最高（r = 0.967），差异显著最小（5.4±3.9 mL）（p<0.05）。经直肠超声测量的前列腺体积与差异呈弱相关（r = 0.360，p<0.05）。膀胱体积与差异无显著相关性（r = -0.043，p>0.05）。经直肠超声与三维超声方法的比较显示，经验丰富的检查者平均差异为3.7±3.4 mL，相关系数为0.924。此外，检查者之间无显著差异（p>0.05）。经直肠超声测量的前列腺体积仅在初学者中与差异呈正相关（r = 0.405，p<0.05）。