Medical Image Perception & Performance

Role Of Experience In Search

Rationale

  • Detection performance related to scanning strategies and Lesion Detection & Dwell Times
  • If observers with different experience scan images differently, some observers may benefit more or less from Perceptual Feedback
  • Perceptual feedback might be tailored to serve as a training tool

Normal (Lesion-Free) Images

  • Scanning patterns are different for readers with more vs. less clinical experience [5], [15], [19], [21]
  • Search can be characterized as more efficient (cover more image area in less time) for experienced readers
  • Experienced readers spend less time dwelling on potentially distracting normal anatomic features

Figure: Typical scanning patterns of an experienced (b) vs. inexperienced (c) reader searching a lesion-free mammogram (a).

Figure: Typical scanning patterns of an experienced (b) vs. inexperienced (c) reader searching a lesion-free mammogram (a).

Lesion-Containing Images

  • Experienced readers tend to have more efficient scanning strategies than less experienced [5], [15], [19], [21]

  • Experienced readers tend to have more true-positives and fewer false-positives less experienced

  • Experienced readers tend to fixate lesions earlier in search than less experienced

  • Experienced readers tend to spend less time fixating areas not likely to contain a lesion

Figure: Typical scanning patterns of an experienced (b) and inexperienced reader (c) reviewing a mammogram with a single subtle micro calcification cluster (a).

Figure : Typical scanning patterns of an experienced (b) and inexperienced reader (c) reviewing a mammogram with a single subtle micro calcification cluster (a).

Return to Eye-Position Recording page