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Combined task activation display as an effective method to teach introductory fMRI users.

Ashwani Gore1, Ranliang Hu2, Dhruv Patel1

  • 1Department of Radiology, Emory University School of Medicine, Atlanta, GA, United States of America.

Clinical Imaging
|April 10, 2019
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Combined task activation display (CTAD) significantly improves functional magnetic resonance imaging (fMRI) interpretation accuracy and confidence for new trainees. This method also reduces interpretation time and variability compared to conventional approaches.

Keywords:
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Area of Science:

  • Neuroimaging
  • Radiology Education
  • Cognitive Neuroscience

Background:

  • Interpreting functional magnetic resonance imaging (fMRI) data for language paradigms is challenging for trainees.
  • No standardized method currently exists for teaching fMRI interpretation to novice learners.
  • Effective training is crucial for accurate clinical application of fMRI.

Purpose of the Study:

  • To compare the efficacy of combined task activation display (CTAD) versus conventional display methods for teaching fMRI interpretation.
  • To evaluate CTAD's impact on trainee accuracy, confidence, interpretation time, and intra-reader variability.

Main Methods:

  • Forty-three unique fMRI cases were reviewed by eight radiology trainees with no prior fMRI experience.
  • Trainees determined language lateralization using either CTAD or conventional methods after a brief training session.
  • A crossover design was employed with a 6-week washout period to assess both methods.

Main Results:

  • CTAD significantly increased trainee accuracy (85.4% vs. 70.9%, p < 0.001) and confidence (4.3 vs. 3.6, p < 0.001).
  • CTAD reduced interpretation time by a mean of 29 minutes and decreased intra-reader variability.
  • These improvements were statistically significant compared to the conventional display method.

Conclusions:

  • Combined task activation display (CTAD) is an effective teaching method for introductory fMRI learners.
  • CTAD enhances the learning curve for fMRI interpretation, leading to more reliable results.
  • This approach shows promise for standardizing fMRI interpretation training in radiology.