Abstract:
To review and analyze the currently available MRI motion phantoms. Publications were collected from the Toronto Metropolitan University Library, PubMed, and IEEE Xplore. Phantoms were categorized based on the motions they generated: linear/cartesian, cardiac-dilative, lung-dilative, rotational, deformation or rolling. Metrics were extracted from each publication to assess the motion mechanisms, construction methods, as well as phantom validation. A total of 60 publications were reviewed, identifying 48 unique motion phantoms. Translational movement was the most common movement (used in 38% of phantoms), followed by cardiac-dilative (27%) movement and rotational movement (23%). The average degrees of freedom for all phantoms were determined to be 1.42. Motion phantom publications lack quantification of their impact on signal-to-noise ratio through standardized testing. At present, there is a lack of phantoms that are designed for multi-role as many currently have few degrees of freedom.
摘要:
回顾和分析目前可用的MRI运动模型。出版物从多伦多城市大学图书馆收集,PubMed,和IEEEXplore。幻影根据它们产生的运动进行分类:线性/笛卡尔,心脏扩张,肺扩张,旋转,变形或滚动。从每个出版物中提取指标来评估运动机制,施工方法,以及幻影验证。共审查了60份出版物,识别48个独特的运动体模。平移运动是最常见的运动(在38%的幻影中使用),其次是心脏扩张运动(27%)和旋转运动(23%)。所有体模的平均自由度被确定为1.42。运动体模出版物缺乏通过标准化测试来量化其对信噪比的影响。目前,缺乏为多角色设计的幻影,因为许多人目前的自由度很少。