Georgios Tsekas, Cornel Zachiu, Gijsbert H. Bol, Madelon van den Dobbelsteen, Lieke T.C. Meijers, Astrid L.H.M.W. van Lier, Johannes C.J. de Boer, Bas W. Raaymakers
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引用次数: 0
摘要
这项研究利用基于多二维电影磁共振成像的综合运动监测(CMM)系统来评估前列腺分块内的三维漂移。研究分析了六名健康志愿者的数据,并给出了 CMM 导出的临床相关配准质量因子指标值。此外,还将 CMM 导出的前列腺运动与基于 3D 的参照物进行了比较,并报告了 2D-3D 跟踪一致性。由于 SI 运动跟踪的质量不高(解剖平面之间经常出现 2 毫米的跟踪不匹配),我们得出结论,在临床上采用 CMM 进行前列腺偏移校正之前,需要进一步改进。
Investigating the use of comprehensive motion monitoring for intrafraction 3D drift assessment of hypofractionated prostate cancer patients on a 1.5T magnetic resonance imaging radiotherapy system
This work investigates the use of a multi-2D cine magnetic resonance imaging-based comprehensive motion monitoring (CMM) system for the assessment of prostate intrafraction 3D drifts. The data of six healthy volunteers were analyzed and the values of a clinically-relevant registration quality factor metric exported by CMM were presented. Additionally, the CMM-derived prostate motion was compared to a 3D-based reference and the 2D-3D tracking agreement was reported. Due to the low quality of SI motion tracking (often 2 mm tracking mismatch between anatomical planes) we conclude that further improvements are desirable prior to clinical introduction of CMM for prostate drift corrections.