Perceptual enhancement of pulmonary nodule recognition in chest radiographs

Elizabeth A. Krupinski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Perceptual feedback (by circling) of chest image areas receiving prolonged gaze duration significantly increases pulmonary nodule detection performance. Other methods of perceptual cueing do not lead to such dramatic increases in performance. The mechanisms by which circling influences detection performance were examined. The results of a number of experiments indicate that circling improves nodule detection because (1) the circle isolates the nodule-containing region from the rest of the image, making the disembedding and perceptual integration of nodule features more likely, (2) the circle insulates the region-of-interest from distracters in the chest anatomy outside of the circle boundary which tend to interfere with attention and detection processes, and (3) the circle increases the precision with which the eye fixates relevant nodule features within the region-of-interest, and decreases the dispersion of fixations within this area. The facilitative effects of circling thus seem to influence some basic visual processes. The results should be generalizable to other types of radiological search and detection tasks.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsHarold L. Kundel
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Number of pages7
ISBN (Print)0819414611
StatePublished - 1994
EventMedical Imaging 1994: Image Perception - Newport Beach, CA, USA
Duration: Feb 17 1994Feb 18 1994

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherMedical Imaging 1994: Image Perception
CityNewport Beach, CA, USA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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