Abstract：
RATIONALE AND OBJECTIVES:The goal of the study was to determine whether there are certain physical features of pulmonary nodules that attract visual attention and contribute to increased recognition and detection by observers. MATERIALS AND METHODS:A series of posteroanterior chest images with solitary pulmonary nodules were searched by six radiologists as their eye-position was recorded. The signal-to-noise ratio, size, conspicuity, location, and calcification status were measured for each nodule. Dwell parameters were correlated with nodule features and related to detection rates. RESULTS:Only nodule size (F = 5.08, P = .0254) and conspicuity (F = 4.625, P = .0329) influenced total dwell time on nodules, with larger, more conspicuous nodules receiving less visual attention than smaller, less conspicuous nodules. All nodule features examined influenced overall detection performance (P < .05) even though most did not influence visual search and attention. CONCLUSION:Individual nodule features do not attract attention as measured by "first hit" fixation data, but certain features do tend to hold attention once the nodule has been fixated. The combination of all features influences whether or not it is detected.
journal_name
Acad Radioljournal_title
Academic radiologyauthors
Krupinski EA,Berger WG,Dallas WJ,Roehrig Hdoi
10.1016/s1076-6332(03)00055-2keywords:
subject
Has Abstractpub_date
2003-08-01 00:00:00pages
861-8issue
8eissn
1076-6332issn
1878-4046journal_volume
10pub_type
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