PACS影像后处理系统准确性的评估

摘要

Objective:To do the assessment on the accuracy of PACS Image Processing System. Methods:Choose stand-alone versions of three PACS manufacturers, evaluate the accuracy of the functions of CT value, length, angle and area measurement by comparing the measurement results with eFilm, an image processing software designed by the Radiological Society of North America. Generate three-dimensional reconstruction of needle tube, and contrast between measure value and true value of internal diameter. Results:The functions of CT value and angle measurement are accurate, while the length, area measurement functions are not accurate. Conclusion:The result of evaluation proves that the length and area measurement function of PACS Image Processing System is low, which can’t become a clinical diagnosis and need improvement. The assessment of the accuracy of PACS Image Processing System has far-reaching significance to the healthy development of PACS systems.%目的：评估影像存档与传输系统(PACS)产品影像后处理系统的准确性。方法：选取国内3家PACS厂商的单机版产品，分别评估其CT值测量、长度测量、角度测量及面积测量4种功能，并与北美放射协会影像处理软件eFilm2.1的测量结果进行对比；使用CT对针管进行三维重建，测量针管内径并与实际值对比。结果：eFilm2.1系统与各厂商的CT值测量结果一致；角度测量结果较为准确；长度、面积测量结果和三维重建后的长度测量结果均有误差。结论：PACS影像后处理系统的长度、面积和三维重建后的长度测量结果准确性较低，在临床诊断中仅可起到参考作用。各厂商需对PACS影像后处理系统的测量结果进行优化，以满足医疗活动的需要。