Abstract
CRT displays are generally used for softcopy display in the digital reading room, but LCDs are being used more frequently. LCDs have many useful properties, but can suffer from significant degradation when viewed off-axis. We compared observer performance and human visual system model performance for on and off-axis CRT and LCD viewing. 400 mammographic regions of interest with different lesion contrasts were shown on and off-axis to radiologists on a CRT and LCD. Receiver Operating Characteristic (ROC) techniques were used to analyze observer performance and results were correlated with the predictions of the human vision model (JNDmetrix model). Both sets of performance metrics showed that LCD on-axis viewing was better than the CRT; and off-axis was significantly better with the CRT. Off-axis LCD viewing of radiographs can degrade observer performance compared to a CRT.
| Original language | English (US) |
|---|---|
| Article number | 32 |
| Pages (from-to) | 281-287 |
| Number of pages | 7 |
| Journal | Progress in Biomedical Optics and Imaging - Proceedings of SPIE |
| Volume | 5749 |
| DOIs | |
| State | Published - 2005 |
| Event | Medical Imaging 2005 - Image Perception, Observer Performance, and Technology Assessment - San Diego, CA, United States Duration: Feb 15 2005 → Feb 17 2005 |
Keywords
- Digital display
- Observer performance
- Off-axis viewing
- Vision model
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Atomic and Molecular Physics, and Optics
- Radiology Nuclear Medicine and imaging