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VIEWDEX: an efficient and easy-to-use software for observer performance studies.

Markus Håkansson1, Sune Svensson, Sara Zachrisson

  • 1Department of Diagnostic Radiology, Södra Alvsborgs Sjukhus, SE-501 82 Borås, Sweden. markus.hakansson@vgregion.se

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PubMed
Summary
This summary is machine-generated.

ViewDEX (Viewer for Digital Evaluation of X-ray images) is efficient software for medical imaging research. It streamlines observer performance studies, including receiver operating characteristic (ROC) and visual grading (VG) tasks, with high scoring rates.

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Area of Science:

  • Medical Imaging
  • Radiology Research
  • Observer Performance Studies

Background:

  • Advancements in radiology necessitate efficient tools for image quality evaluation.
  • ViewDEX (Viewer for Digital Evaluation of X-ray images) is a versatile DICOM-compatible software designed for research and optimization in medical imaging.
  • Its flexible interface and Java-based development allow for broad applicability and ease of use.

Purpose of the Study:

  • To evaluate the efficiency of ViewDEX for conducting receiver operating characteristic (ROC), free-response ROC (FROC), and visual grading (VG) studies.
  • To quantify the scoring rates achievable with ViewDEX in different study types and configurations.

Main Methods:

  • The study involved evaluating ViewDEX's performance in simulated ROC, FROC, and VG studies.
  • Scoring rates were measured based on the number of criteria per case and image format (single images vs. image stacks).
  • Data analysis focused on determining the efficiency of ViewDEX in processing and evaluating medical images for observer performance assessment.

Main Results:

  • For visual grading (VG) studies with five anatomical criteria per single image, a scoring rate of approximately 150 cases per hour was achieved.
  • For receiver operating characteristic (ROC) and free-response ROC (FROC) studies using single clinical images, the scoring rate was approximately 100 cases per hour.
  • When using image stacks (approximately 50 images per case) for ROC and FROC studies, the scoring rate decreased to approximately 25 cases per hour.

Conclusions:

  • ViewDEX is an efficient and user-friendly software solution for conducting observer performance studies in medical imaging.
  • The software demonstrates high scoring rates, particularly for visual grading and single-image ROC/FROC studies.
  • ViewDEX facilitates research and optimization tasks in radiology, supporting the evaluation of image and investigation quality.