Investigation of basic imaging properties in digital radiography. 8. Detection of simulated low-contrast objects in digital subtraction angiographic images.

@article{Ohara1986InvestigationOB,
  title={Investigation of basic imaging properties in digital radiography. 8. Detection of simulated low-contrast objects in digital subtraction angiographic images.},
  author={Kouzou Ohara and Hoi Kei Phoebe Chan and Kunio Doi and Maryellen L. Giger and Hiroshi Fujita},
  journal={Medical physics},
  year={1986},
  volume={13 3},
  pages={
          304-11
        }
}
We investigated the effects of imaging and display conditions on the detectability of low-contrast objects in digital subtraction angiographic (DSA) images. The test images were produced by superimposition of low-contrast objects on a uniform noisy background obtained with a DSA system. We employed 18-alternative forced-choice (18-AFC) experiments and predictions based on statistical decision theory to study the dependence of the threshold contrasts of the test objects on the object size… CONTINUE READING
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