The Radiologist and
Automated Image
Analysis
Elizabeth A. Krupinski, PhD
Department of Radiology
University of Arizona
Work Supported In Part
By :
Toshiba Medical Systems Tokyo, Japan
DataRay Corporation Westminster, CO
Fuji Medical Systems ...
Goals
Reading Radiographic Images
from Digital Displays
- Perceptual
- Cognitive
- Ergonomic
Major Parameters
- Diagnostic Accuracy
- Viewing Time or Time to
Diagnose
- Subjective or Aesthetic
Judgments of Image Qua...
Types Of Studies
- Film vs. Monitor Reading
- Evaluating Monitor Characteristics
- Workstation Evaluation
- Radiologists a...
Workstation Evaluation
Measurement Tools
ROC Analysis
Decision Rates
Agreement Statistics
Rating Analysis
Work Flow Analysis
Eye-Position Recordi...
Quality Ratings
0
1
2
3
4
Contrast Sharpness Quality
CR
CRT
Role of Experience
Experience affects scanning
patterns & diagnostic accuracy in
general : experience yields better
perfor...
MORE EXPERIENCED
LESS EXPERIENCED
Image Processing &
Reading Effects
Types used
Patterns of use
Preferences
Effects on performance
CAD & Radiologists
Simplified Menus
Select Patients
Select By: Not Yet Read All
Sort By: Patient ID Patient Name Study Date/Time Modality Asc...
Simplified Icons
9090 90
Simplified Window & Level
GRAY SCALE
PRESETS
Save Apply Restore Close
All
Width 256 Level 356
OK
Too Much
Keys to Success
Involve the radiologist
Study workflow & habits
Know effects of equipment
(monitors)
Know the user (specia...
Upcoming SlideShare
Loading in …5
×

The Radiologist

124 views
106 views

Published on

Published in: Health & Medicine, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
124
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
1
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

The Radiologist

  1. 1. The Radiologist and Automated Image Analysis Elizabeth A. Krupinski, PhD Department of Radiology University of Arizona
  2. 2. Work Supported In Part By : Toshiba Medical Systems Tokyo, Japan DataRay Corporation Westminster, CO Fuji Medical Systems Stamford, CT Special Thanks To : ARC & Prof. Anthony Maeder
  3. 3. Goals Reading Radiographic Images from Digital Displays - Perceptual - Cognitive - Ergonomic
  4. 4. Major Parameters - Diagnostic Accuracy - Viewing Time or Time to Diagnose - Subjective or Aesthetic Judgments of Image Quality, Usefulness, Preferences, etc.
  5. 5. Types Of Studies - Film vs. Monitor Reading - Evaluating Monitor Characteristics - Workstation Evaluation - Radiologists and CAD
  6. 6. Workstation Evaluation
  7. 7. Measurement Tools ROC Analysis Decision Rates Agreement Statistics Rating Analysis Work Flow Analysis Eye-Position Recording
  8. 8. Quality Ratings 0 1 2 3 4 Contrast Sharpness Quality CR CRT
  9. 9. Role of Experience Experience affects scanning patterns & diagnostic accuracy in general : experience yields better performance & more efficient search behavior A “generation gap” effect has also been observed when comparing film versus monitor reading, in radiology and in pathology
  10. 10. MORE EXPERIENCED LESS EXPERIENCED
  11. 11. Image Processing & Reading Effects Types used Patterns of use Preferences Effects on performance
  12. 12. CAD & Radiologists
  13. 13. Simplified Menus Select Patients Select By: Not Yet Read All Sort By: Patient ID Patient Name Study Date/Time Modality Ascending Descending Patient Name Pat. ID Study Date/Time Mod Study Name Image Date/Time Body Part Smith, John 22222222 12/12/98 14:00:00 CR Chest - PA Display Delete Cancel
  14. 14. Simplified Icons 9090 90
  15. 15. Simplified Window & Level GRAY SCALE PRESETS Save Apply Restore Close All Width 256 Level 356 OK Too Much
  16. 16. Keys to Success Involve the radiologist Study workflow & habits Know effects of equipment (monitors) Know the user (specialist, generalist) Make it simple Involve another radiologist Involve yet another radiologist

×