1·Purpose: propose to measure the collimator's quality with system uniformity parameter.
目的:用系统均匀性指标检测准直器的质量。
2·Purpose to study the clinical applying value of multi-leaf collimator.
目的:研究多叶准直器在临床的应用价值。
1·The portable laser collimator and the straightness measuring and evaluating software are developed.
开发了便携式激光准直仪及直线度误差测量、评定软件。
1·With a collimator and a 23 polyhedron as measuring datum, a set of optical angular encoder measuring data, which containing the eccentricity error, was obtained.