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Related Experiment Video

Updated: Apr 7, 2026

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
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Does preference influence performance when reading different sizes of cranial computed tomography?

Antje C Venjakob1, Tim Marnitz2, Lavier Gomes3

  • 1Technische Universität Berlin , Department of Psychology and Ergonomics, Chair of Human-Machine Systems, Marchstrasse 23, Berlin 10587, Germany.

Journal of Medical Imaging (Bellingham, Wash.)
|July 10, 2015
PubMed
Summary
This summary is machine-generated.

Radiologists' preference for image size in computed tomography (CT) scans does not correlate with their diagnostic performance. This study found no link between preferred CT image size and accuracy in identifying intracranial hemorrhages.

Keywords:
cranial computed tomographyimage sizeobserver performancepreference

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Area of Science:

  • Medical Imaging
  • Radiology
  • Diagnostic Performance

Background:

  • Radiology often assumes that preferred image presentation enhances diagnostic performance.
  • The relationship between subjective preference and objective performance in medical imaging requires empirical investigation.

Purpose of the Study:

  • To investigate whether radiologists' preference for specific image sizes correlates with their performance in detecting intracranial hemorrhages on CT scans.
  • To determine if subjective preference for image size impacts diagnostic accuracy and reading time.

Main Methods:

  • Forty-three radiologists evaluated 20 cranial CT scans presented in two different image sizes.
  • Radiologists indicated their preferred size and rated each size on a continuous scale.
  • Performance was assessed using the jackknife free-response receiver operating characteristic (JAFROC) figure of merit, and reading time was recorded.

Main Results:

  • No significant correlation was found between radiologists' preference for image size and their diagnostic performance (JAFROC figure of merit).
  • No significant correlation was observed between image size preference and the time taken to read the cases.
  • Performance did not differ significantly between radiologists grouped by their size preference.

Conclusions:

  • Radiologists' subjective preference for image size does not appear to be related to their objective performance in detecting intracranial hemorrhages.
  • The findings challenge the assumption that preference dictates superior performance in radiological image interpretation.