Interobserver variation of clinical oncologists compared to therapeutic radiographers (RTT) prostate contours on T2 weighted MRI

Q1 Nursing Technical Innovations and Patient Support in Radiation Oncology Pub Date : 2023-03-01 DOI:10.1016/j.tipsro.2022.12.007

Gillian Adair Smith , Alex Dunlop , Sophie E. Alexander , Helen Barnes , Francis Casey , Joan Chick , Ranga Gunapala , Trina Herbert , Rebekah Lawes , Sarah A. Mason , Adam Mitchell , Jonathan Mohajer , Julia Murray , Simeon Nill , Priyanka Patel , Angela Pathmanathan , Kobika Sritharan , Nora Sundahl , Rosalyne Westley , Alison C. Tree , Helen A. McNair

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引用次数: 2

Abstract

The implementation of MRI-guided online adaptive radiotherapy has enabled extension of therapeutic radiographers’ roles to include contouring. An offline interobserver variability study compared five radiographers’ and five clinicians’ contours on 10 MRIs acquired on a MR-Linac from 10 patients. All contours were compared to a “gold standard” created from an average of clinicians’ contours. The median (range) DSC of radiographers’ and clinicians’ contours compared to the “gold standard” was 0.91 (0.86–0.96), and 0.93 (0.88–0.97) respectively illustrating non-inferiority of the radiographers’ contours to the clinicians. There was no significant difference in HD, MDA or volume size between the groups.

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临床肿瘤学家与治疗放射技师(RTT)在T2加权MRI上前列腺轮廓的观察者间差异

MRI引导的在线自适应放射治疗的实施使放射治疗技师的角色得以扩展，包括轮廓。一项离线观察者间变异性研究比较了5名放射技师和5名临床医生在10名患者的MR Linac上获得的10个MRI的轮廓。将所有轮廓与根据临床医生的平均轮廓创建的“金标准”进行比较。与“金标准”相比，放射技师和临床医生的轮廓的中位数（范围）DSC分别为0.91（0.86–0.96）和0.93（0.88–0.97），说明放射技师的轮廓对临床医生来说并不自卑。两组之间的HD、MDA或体积大小没有显著差异。

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