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Redesigning the DTITool
- 1. Redesigning the DTITool Nikolay Chupriyanov Glenn Veugen Tin de Zeeuw Biyong Zhang USI 2011
- 2. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 3. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 4. What is Diffusion Tensor Imaging?
- 5. What is Diffusion Tensor Imaging? DTI is a magnetic resonance imaging (MRI) method
- 6. What is Diffusion Tensor Imaging? DTI is a magnetic resonance imaging (MRI) method Measures tissue such as white matter or muscle fibers
- 7. The DTITool Visualization tool for DTI data Explore DTI data Quantify DTI data
- 8. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 9. Initial research Getting acquainted with Diffusion Tensor Imaging – Interviews with doctors and researchers Seeing how DTITool is used – Observation of experts using DTITool – Heuristic evaluation List with issues and feature requests – From 2 researchers and MMC Veldhoven
- 10. Early sketches and ideas
- 11. Initial conclusions DTITool is great for visualizing data There are many potential users
- 12. Initial conclusions DTITool is not being applied in the medical field The UI is unintuitive and cumbersome to the user
- 13. Use case for testing Visualizing tracked fibers
- 14. Explore MRI data
- 15. Explore MRI data Draw Regions of Interest
- 16. Explore MRI data Draw regions of Interest Track and visualize fibers
- 17. Explore MRI data Draw regions of Interest Track and visualize fibers Export visualizations
- 18. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 19. 1st user tests Scenario based on initial research 9 expert users participated 4 Medical imaging background 2 With DTITool experience 3 HCI background
- 20. Old video
- 21. Results User # T1 T2.1 T2.2 T2.3 T2.4 T3 T4 T5 T6 1 fail pass pass fail pass fail fail fail pass 2 No record pass fail fail fail pass pass pass fail 3 pass pass pass fail pass pass pass pass fail 4 pass pass pass fail pass fail fail fail fail 5 pass pass pass pass pass fail fail fail fail 6 pass pass pass pass pass fail pass pass pass 7 pass pass pass pass pass pass fail fail pass 8 pass pass pass pass pass pass pass pass pass 9 pass pass pass pass pass pass pass pass pass 88% 100% 88% 55% 88% 55% 55% 55% 55%
- 22. Lack of feedback in viewports Interface text is not intuitive Doesn’t really know what to save “Dropdown sucks” No clear cues ROI drawing not straight-forward “Tool seemed to be clean and simple, but it’s this kind of simplicity that hides the compl Poor representation of available plugin Not always clear how to zoom Right panel is “If I only save fibers, I lose the background information of the planes cluttered to draw ROI Unclear where
- 23. • Composed scenario based on initial research • Processed results by means of affinity diagram Game storming
- 24. Improve the basic package
- 25. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 26. 2nd user tests Prototyping time! Validating prototypes heuristically Testing round with 7 users users New and “recycled” users
- 27. Results of prototype testing User T1 T2 T3.1 T3.2 T3.3 T3.4 T3.5 T4 T5 T6 T7 T8 T9 #1 pass pass pass fail pass No record No record fail pass pass pass pass pass #2 pass pass pass pass pass pass fail fail pass pass pass pass pass #3 pass pass pass pass pass pass fail fail pass pass pass pass pass #4 pass pass pass pass pass pass fail fail pass pass pass pass pass #5 pass pass pass pass pass pass No record fail fail fail pass pass fail #6 pass pass pass pass pass No record No record pass pass pass pass pass pass #7 pass pass pass pass pass pass pass pass pass pass pass pass pass 100% 100% 100% 85% 100% 100% 25% 28% 85% 85% 100% 100% 85%
- 29. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 30. Tooltips & help
- 32. How it was Plug-in list navigation
- 33. How it was
- 34. How it was
- 35. The new right panel • Hick’s law in play • Supports the standard workflow
- 36. Viewport manipulation and control
- 38. How we redesigned it and why
- 39. ROI drawing and editing
- 40. How it was • Also: ask for video by Tin
- 41. How we redesigned it and why
- 42. Fiber tracking and visualisation
- 49. Exporting images
- 50. How it was
- 51. How we redesigned it and why
- 52. Final result High-fidelity interactive prototype An accompanying specification document explaining the design changes and rationale Sketches and ideas that have not been implemented in hi-fi prototype
- 53. DTI and DTITool Initial research 1st user tests 2nd user tests Final designs Retrospective
- 54. What have we learned
- 55. Go to users early and often
- 56. Sketch a lot The more you sketch and throw away – the better
- 59. Thank you for your attention
Notes de l'éditeur
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective
- Like = such as\\Mention something about plugins
- Like = such as\\Mention something about plugins
- Like = such as\\Mention something about plugins
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective
- Fasten animation of sketches
- Change DTI to DTITool or so, former is arguableChange second to unintuitive, cumbersome, blablabla and shit like thatTalk about positive stuff about DTITool -> potential, great visuals
- Talk about positive stuff about DTITool -> potential, great visuals
- Tracking and visualizing fibers
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective
- Go to next slide by the end of vid
- Empty cell = no recordAdd user label to rows
- Game storming
- What is the basic package? DTITool is plugin basedUsers can develop own plugins of which we have no control over
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective
- 2nd round of testing
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective
- Initial research1stuser tests and results2nd user tests and resultsFinal designsRetrospective