Journal article
The problem of image interpretation in mammography: effects of lesion conspicuity on the visual search strategy of radiologists
British journal of radiology, Vol.79 Spec No 2(s2), pp.S111-s116
12/2006
DOI: 10.1259/bjr/61144371
PMID: 17209115
Abstract
Radiologists make the decision to report or dismiss a possible cancer based not only on the finding itself, but also in the comparison with selected areas of the background. We examined the effects of fixating, for the first time, the location where the radiologist either reported the presence of a malignant mass or visually inspected the mass but did not report it, and the effects of pairing radiologists to read the same cases. Four experienced mammographers participated in this experiment. They read a set of 20 cases twice. Eye-position tracking was used to monitor the visual search behaviour of the observers. Spatial frequency analysis was used to determine the characteristics of the areas of the background fixated by the observers. Radiologists had more fixations in the cases where they agreed how to manage the lesion than when they disagreed. Correlation between the areas of the background sampled by the radiologists and an "average" representation of the background increased after the observers fixated for the first time a malignant mass that they reported. Fixating, for the first time, a location where the radiologist reports a malignant mass or a location containing a cancer that the radiologist visually inspects but decides not to report, has a significant effect on any further sampling of the background. Furthermore, care should be taken when pairing radiologists, because some observers showed such a similar visual search behaviour that not much would be gained by having them read the same cases.
Details
- Title: Subtitle
- The problem of image interpretation in mammography: effects of lesion conspicuity on the visual search strategy of radiologists
- Creators
- C Mello-Thoms - University of Pittsburgh, Department of Radiology, 300 Halket Street, Suite 4200, Pittsburgh, PA 15228, USA. cmellothoms@magee.edu
- Resource Type
- Journal article
- Publication Details
- British journal of radiology, Vol.79 Spec No 2(s2), pp.S111-s116
- Publisher
- England
- DOI
- 10.1259/bjr/61144371
- PMID
- 17209115
- ISSN
- 0007-1285
- eISSN
- 1748-880X
- Grant note
- EB002120 / NIBIB NIH HHS CA100107 / NCI NIH HHS
- Language
- English
- Date published
- 12/2006
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology
- Record Identifier
- 9984051721902771
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