Design issues of the existing radiotherapy segmentation software

Research output: Contribution to journalArticleScientificpeer-review


Findings from previous literatures, ethnography studies and interviews showed that radiotherapy contouring interfaces are very complex, requiring many human-computer interactions (HCI). In this paper we used observational, heuristic evaluation, think aloud and NASA-TLX methods to 1) analyse the workflow of radiotherapy segmentation systems; 2) discover possible usability and HCI design issues of current segmentation systems in order to identify the requirements for future interface design; and 3) explore the abilities and limitations of various evaluation methods. From the results it can be seen that observational and think aloud methods were very useful in identifying the workflow of different systems. The heuristic evaluation method uncovered more general usability issues with the interface design. The think aloud method identified more HCI issues compared to general usability issues. From the NASA-TLX, it can be seen that the workload level of system C is higher in almost all the categories. Using the four different methods this study identified several usability and HCI issues and have proposed seven main requirements which might be considered in our future studies.
Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalInternational Symposium of Human Factors and Ergonomics in Healthcare. Proceedings
Issue number1
Publication statusPublished - 2016
Event The 2016 International Symposium of Human Factors and Ergonomics in Healthcare: Shaping the future - San Diego, United States
Duration: 13 Apr 201616 Apr 2016


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