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Formative Evaluation of Visible Human Browsers: Insights from Student Feedback

This paper presents an evaluation of user interfaces for the Visible Human Project (VHP), focusing on how second-year medical students interact with human anatomy data sets. Through a blend of qualitative methods, including semi-structured interviews and focus groups, we gather insights into student perceptions on the usefulness and usability of the VHP’s software tools. Key findings highlight preferred interface features, challenges in learning anatomy, and potential improvements to enhance educational outcomes. Recommendations for future development are also discussed.

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Formative Evaluation of Visible Human Browsers: Insights from Student Feedback

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  1. Visible Human Browsers:Formative Evaluation Basedon Student Feedback Neil Skov, EdD Wen Yu Lee, MS Deborah S. Walker, DNSc, CNM, FACNM Carl Berger, EdD Visible Human Conference, 2002

  2. Introduction • Context: • Next Generation Internet – Visible Human Project (NGI–VHP) • User Interface and Evaluation Team • Purpose: • Student use of Visible Human data sets • Formative evaluation of user interfaces Visible Human Conference, 2002

  3. Introduction Cont. • Research Questions: • What is the most effective way for student users to interact with VH browser interfaces? • What are students’ perceptions of the usefulness of the VH software for learning anatomy? Visible Human Conference, 2002

  4. Background • Formative Evaluation • Early feedback • Support design decisions • Types of Review • Expert or Formal • Potential users • Usability • Acceptance Visible Human Conference, 2002

  5. Methods • Hybrid Methodology • Qualitative • Semi-structured interview • Interview about instances • Focus group • Video Taping Visible Human Conference, 2002

  6. Methods Cont. • Participants • Second-year medical students • One year gross anatomy • Three groups of four Visible Human Conference, 2002

  7. Methods Cont. • Procedure • Demonstration • Student trials • Discussion • Repeat for Each Tool • Summary Discussion Visible Human Conference, 2002

  8. Methods Cont. • Software • Edgewarp 3D (EW) • PSC Volume Browser (PVB) • Other • Anatomy content database • Edgewarp fly-through simulation Visible Human Conference, 2002

  9. Edgewarp 3D Visible Human Conference, 2002

  10. PSC Volume Browser Visible Human Conference, 2002

  11. Data Analysis • Qualitative • Video Analysis • Joint viewing • Repetition • Notes (tables) • Search for Patterns • Thematic Organization Visible Human Conference, 2002

  12. Data Analysis Cont. Event Summary Table Visible Human Conference, 2002

  13. Data Analysis Cont. • Interactions with VH software • Controls • Interpretation of display • Strategies for use • Learning Anatomy • Student requirements for anatomy content • Use of the software for learning anatomy Visible Human Conference, 2002

  14. Data Analysis Cont. • Suggestions for • Control devices • New functions • Anatomy topics Visible Human Conference, 2002

  15. Selected Results • Interactions with VH Software: Controls • Like dragging yellow box (EW) • Preference for button bars • Image pixelation problem Visible Human Conference, 2002

  16. Selected Results Cont. • Interactions with VH Software: Display Interpretation Problems • Location of cut plane • Aspect • Motion • Translation • Rotation Visible Human Conference, 2002

  17. Results Cont. • Learning Anatomy • Labels, labels, labels, … • Head-and-neck and pelvis • Usefulness • Secondary resource • Steep learning curve • Value increase with time Visible Human Conference, 2002

  18. Principal Conclusions • Answers to Research Questions: Best Interface Features? • Familiar button bars, but … • Ability to jump/return to preset views • Dragging cut plane in context window Visible Human Conference, 2002

  19. Conclusions Cont. • Answers to Research Questions: Usefulness for Learning Anatomy? • Importance of models • Secondary learning tool ??? • Avoid excessive cognitive load Visible Human Conference, 2002

  20. Conclusions Cont. • Recommendations • Image refresh & synchronization • NGI !!! • Compression !!! • Orientation support • Models • “Compass” • Selectable user modes Visible Human Conference, 2002

  21. Conclusions Cont. • Remaining Issues • Student study preferences • Possible order effect • Future Work Visible Human Conference, 2002

  22. Credits • National Library of Medicine Brian Athey, P.I. (Contract: N01 - LM - 0 - 3511) • Edgewarp 3D Fred Bookstein & William Green • PSC Volume Browser Art Wetzel & Stuart Pomerantz • Arrangements and Demos Alex Ade, Walter Meixner, Geri Pelok, & Alex Terzian Visible Human Conference, 2002

  23. Visible Human Browsers: Formative Evaluation Based on Student Feedback Neil Skov, EdD (skov@umich.edu) Wen Yu Lee, MS Deborah S. Walker, DNSc, CNM, FACNM Carl Berger, EdD Visible Human Conference, 2002

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