visible human conference, 2002 visible human browsers: formative evaluation based on student...
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Visible Human Conference, 2002
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
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
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
Background
Formative Evaluation Early feedback Support design decisions
Types of Review Expert or Formal Potential users
Usability Acceptance
Visible Human Conference, 2002
Methods
Hybrid Methodology Qualitative Semi-structured interview Interview about instances Focus group
Video Taping
Visible Human Conference, 2002
Methods Cont.
Participants Second-year medical students One year gross anatomy Three groups of four
Group 1 Group 2 Group 3 0 Female 4 Male
2 Female 2 Male
1 Female 3 Male
Visible Human Conference, 2002
Methods Cont.
Procedure Demonstration Student trials Discussion
Repeat for Each Tool
Summary Discussion
Visible Human Conference, 2002
Methods Cont.
Software Edgewarp 3D (EW)
PSC Volume Browser (PVB)
Other Anatomy content database Edgewarp fly-through simulation
Visible Human Conference, 2002
Edgewarp 3D
Visible Human Conference, 2002
PSC Volume Browser
Visible Human Conference, 2002
Data Analysis
Qualitative Video Analysis Joint viewing Repetition Notes (tables)
Search for Patterns Thematic Organization
Visible Human Conference, 2002
Data Analysis Cont.
Event Summary Table
EventSeq.
#
GroupRec.
#
VHTool Observation/
Comment
Theme
Code
Visible Human Conference, 2002
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
Data Analysis Cont.
Suggestions for Control devices New functions Anatomy topics
Visible Human Conference, 2002
Selected Results
Interactions with VH Software: Controls Like dragging yellow box (EW) Preference for button bars Image pixelation problem
Visible Human Conference, 2002
Selected Results Cont.
Interactions with VH Software: Display Interpretation Problems Location of cut plane Aspect Motion
Translation Rotation
Visible Human Conference, 2002
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
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
Conclusions Cont.
Answers to Research Questions: Usefulness for Learning Anatomy? Importance of models Secondary learning tool ??? Avoid excessive cognitive load
Visible Human Conference, 2002
Conclusions Cont.
Recommendations Image refresh & synchronization
NGI !!! Compression !!!
Orientation support Models “Compass”
Selectable user modes
Visible Human Conference, 2002
Conclusions Cont.
Remaining Issues Student study preferences Possible order effect
Future Work
Visible Human Conference, 2002
Credits
National Library of MedicineBrian Athey, P.I. (Contract: N01 - LM - 0 - 3511)
Edgewarp 3DFred Bookstein & William Green
PSC Volume BrowserArt Wetzel & Stuart Pomerantz
Arrangements and DemosAlex Ade, Walter Meixner, Geri Pelok,
& Alex Terzian
Visible Human Conference, 2002
Visible Human Browsers: Formative Evaluation Based on Student Feedback
Neil Skov, EdD ([email protected])
Wen Yu Lee, MS
Deborah S. Walker, DNSc,CNM, FACNM
Carl Berger, EdD