Boxwala A A, Chaney E L, Fritsch D S, Friedman C P, Rosenman J G
Department of Radiation Oncology, University of North Carolina, Chapel Hill 27599-7512, USA.
Int J Radiat Oncol Biol Phys. 1998 Sep 1;42(2):455-62. doi: 10.1016/s0360-3016(98)00237-5.
The purpose of this investigation was to design and implement a prototype physician workstation, called PortFolio, as a platform for developing and evaluating, by means of controlled observer studies, user interfaces and interactive tools for analyzing and managing digital portal images. The first observer study was designed to measure physician acceptance of workstation technology, as an alternative to a view box, for inspection and analysis of portal images for detection of treatment setup errors.
The observer study was conducted in a controlled experimental setting to evaluate physician acceptance of the prototype workstation technology exemplified by PortFolio. PortFolio incorporates a windows user interface, a compact kit of carefully selected image analysis tools, and an object-oriented data base infrastructure. The kit evaluated in the observer study included tools for contrast enhancement, registration, and multimodal image visualization. Acceptance was measured in the context of performing portal image analysis in a structured protocol designed to simulate clinical practice. The acceptability and usage patterns were measured from semistructured questionnaires and logs of user interactions.
Radiation oncologists, the subjects for this study, perceived the tools in PortFolio to be acceptable clinical aids. Concerns were expressed regarding user efficiency, particularly with respect to the image registration tools.
The results of our observer study indicate that workstation technology is acceptable to radiation oncologists as an alternative to a view box for clinical detection of setup errors from digital portal images. Improvements in implementation, including more tools and a greater degree of automation in the image analysis tasks, are needed to make PortFolio more clinically practical.
本研究的目的是设计并实现一个名为PortFolio的原型医师工作站，作为一个平台，通过对照观察研究来开发和评估用于分析和管理数字射野图像的用户界面及交互式工具。第一项观察研究旨在衡量医师对工作站技术的接受程度，该技术可作为观片箱的替代方案，用于检查和分析射野图像以检测治疗摆位误差。
观察研究在可控的实验环境中进行，以评估医师对以PortFolio为代表的原型工作站技术的接受程度。PortFolio包含一个Windows用户界面、一套精心挑选的图像分析工具以及一个面向对象的数据库基础设施。在观察研究中评估的工具套件包括对比度增强、配准和多模态图像可视化工具。在旨在模拟临床实践的结构化协议中进行射野图像分析的背景下衡量接受程度。通过半结构化问卷和用户交互日志来测量可接受性和使用模式。
本研究的受试者放射肿瘤学家认为PortFolio中的工具是可接受的临床辅助工具。对用户效率表示担忧，尤其是图像配准工具方面。
我们观察研究的结果表明，工作站技术作为从数字射野图像临床检测摆位误差的观片箱替代方案，放射肿瘤学家可以接受。需要在实施方面进行改进，包括增加更多工具以及在图像分析任务中提高自动化程度，以使PortFolio在临床上更具实用性。
