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Role of expertise and contralateral symmetry in the diagnosis of pneumoconiosis: an experimental study

2011

Conference Paper

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Pneumoconiosis, a lung disease caused by the inhalation of dust, is mainly diagnosed using chest radiographs. The effects of using contralateral symmetric (CS) information present in chest radiographs in the diagnosis of pneumoconiosis are studied using an eye tracking experimental study. The role of expertise and the influence of CS information on the performance of readers with different expertise level are also of interest. Experimental subjects ranging from novices & medical students to staff radiologists were presented with 17 double and 16 single lung images, and were asked to give profusion ratings for each lung zone. Eye movements and the time for their diagnosis were also recorded. Kruskal-Wallis test (χ2(6) = 13.38, p = .038), showed that the observer error (average sum of absolute differences) in double lung images differed significantly across the different expertise categories when considering all the participants. Wilcoxon-signed rank test indicated that the observer error was significantly higher for single-lung images (Z = 3.13, p < .001) than for the double-lung images for all the participants. Mann-Whitney test (U = 28, p = .038) showed that the differential error between single and double lung images is significantly higher in doctors [staff & residents] than in non-doctors [others]. Thus, Expertise & CS information plays a significant role in the diagnosis of pneumoconiosis. CS information helps in diagnosing pneumoconiosis by reducing the general tendency of giving less profusion ratings. Training and experience appear to play important roles in learning to use the CS information present in the chest radiographs.

Author(s): Varun Jampani and Vivek Vaidya and Jayanthi Sivaswamy and Kishore L. Tourani
Book Title: Proc. SPIE 7966, Medical Imaging: Image Perception, Observer Performance, and Technology Assessment
Volume: 2011
Year: 2011
Month: March

Department(s): Perceiving Systems
Bibtex Type: Conference Paper (inproceedings)
Paper Type: Conference

Address: Florida
URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1349984

Links: url

BibTex

@inproceedings{jampani11_spie,
  title = {Role of expertise and contralateral symmetry in the diagnosis of pneumoconiosis: an experimental study},
  author = {Jampani, Varun and Vaidya, Vivek and Sivaswamy, Jayanthi and Tourani, Kishore L.},
  booktitle = {Proc. SPIE 7966, Medical Imaging: Image Perception, Observer Performance, and Technology Assessment},
  volume = {2011},
  address = {Florida},
  month = mar,
  year = {2011},
  url = {http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1349984},
  month_numeric = {3}
}