School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia.
Division of Exercise Science, School of Human Sciences, The University of Western Australia, Perth, Australia.
Neurourol Urodyn. 2021 Aug;40(6):1539-1549. doi: 10.1002/nau.24701. Epub 2021 Jun 15.
To investigate the inter- and intratester repeatability of measurement of the location and displacement of five pelvic landmarks related to pelvic floor muscles with transperineal ultrasound (TPUS) imaging recorded from healthy men and men before and after prostatectomy.
TPUS images were selected from four different participant groups: healthy men, men awaiting prostatectomy, men 2 weeks after prostatectomy, and men 12 months after prostatectomy. On two separate occasions, two assessors with different levels of experience performed analysis of location and displacement of five pelvic landmarks in images made at rest and during voluntary contraction. A two-way mixed effects, single measurement, absolute agreement intraclass correlation coefficient (ICC) was used to investigate the repeatability.
Intertester reliability of all locations at rest for all groups was excellent (ICCs > 0.8) except for the craniocaudal coordinate of the ventral urethrovesical junction for men 2 weeks postprostatectomy and the anorectal junction for men with a cancerous prostate. Intertester reliability of the measurement of landmark displacement was acceptable (>0.5) for the dorsoventral axis of motion but not for the craniocaudal axis of motion for all landmarks across all groups. The more experienced assessor was consistently more repeatable. More deeply placed landmarks were more often excluded from analysis and had poorer reliability.
Analysis of TPUS images across clinical groups is repeatable for both location and displacement of pelvic landmarks related to pelvic floor muscles when measures are made twice. Analysis experience, landmark depth and optimization of ultrasound settings appear to be important factors in reliability.
研究经会阴超声（TPUS）图像测量与盆底肌肉相关的五个骨盆标志点位置和位移的重复性，该研究纳入了健康男性以及前列腺切除术前、术后 2 周和术后 12 个月的男性。
从四个不同的参与者组中选择 TPUS 图像：健康男性、等待前列腺切除术的男性、前列腺切除术后 2 周的男性和前列腺切除术后 12 个月的男性。两名经验水平不同的评估员在两次不同的时间，对静息和自主收缩状态下的图像进行了五个骨盆标志点位置和位移的分析。使用双向混合效应、单测量、绝对一致性组内相关系数（ICC）来评估重复性。
除了前列腺切除术后 2 周的男性的尿道膀胱颈腹侧和肛门直肠交界处的矢状坐标以及患有前列腺癌的男性的所有位置外，所有组在静息状态下的所有位置的组内相关性均为极好（ICC＞0.8）。对于所有组的所有标志点，在矢状面运动的背腹轴上，标志点位移的测量具有可接受的组内相关性（＞0.5），但在矢状面运动的头侧尾侧轴上没有。经验更丰富的评估员始终更具重复性。位置更深的标志点往往被排除在分析之外，且可靠性更差。
两次测量时，跨临床组的 TPUS 图像分析对于与盆底肌肉相关的骨盆标志点的位置和位移均具有重复性。分析经验、标志点深度和优化超声设置似乎是可靠性的重要因素。
