Development and Usability Testing of a User-Centered 3D Virtual Liver Surgery Planning System
KCI
- Title
- Development and Usability Testing of a User-Centered 3D Virtual Liver Surgery Planning System
- Authors
- YANG, XIAOPENG; 유희철; 최영근; 양재도; 조백환; 유희천
- Date Issued
- 2017-02
- Publisher
- 대한인간공학회
- Abstract
- Objective: The present study developed a user-centered 3D virtual liver surgery planning (VLSP) system called Dr. Liver to provide preoperative information for safe and rational surgery.
Background: Preoperative 3D VLSP is needed for patients' safety in liver surgery.
Existing systems either do not provide functions specialized for liver surgery planning or do not provide functions for cross-check of the accuracy of analysis results.
Method: Use scenarios of Dr. Liver were developed through literature review, benchmarking, and interviews with surgeons. User interfaces of Dr. Liver with various user-friendly features (e.g., context-sensitive hotkey menu and 3D view navigation box) was designed. Novel image processing algorithms (e.g., hybrid semi-automatic algorithm for liver extraction and customized region growing algorithm for vessel extraction) were developed for accurate and efficient liver surgery planning. Usability problems of a preliminary version of Dr. Liver were identified by surgeons and system developers and then design changes were made to resolve the identified usability problems.
Results: A usability testing showed that the revised version of Dr. Liver achieved a high level of satisfaction (6.1 ± 0.8 out of 7) and an acceptable time efficiency (26.7 ± 0.9 min) in liver surgery planning.
Conclusion: Involvement of usability testing in system development process from the beginning is useful to identify potential usability problems to improve for shortening system development period and cost.
Application: The development and evaluation process of Dr. Liver in this study can be referred in designing a user-centered system.
- Keywords
- Virtual liver surgery planning system; User-Centered system design; Usability testing
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50759
- DOI
- 10.5143/JESK.2017.36.1.37
- ISSN
- 1229-1684
- Article Type
- Article
- Citation
- 대한인간공학회지, vol. 36, no. 1, page. 37 - 52, 2017-02
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