Difference between revisions of "VolCT - Group 1B"

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(Current Goals & Status:)
m (Current Goals & Status:)
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*[[Vol-CT  - 1B Group Call Summaries]]
 
*[[Vol-CT  - 1B Group Call Summaries]]
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*[[Media:Update Group 1B 4-19-2011-Dr-McNitt-Gray.pdf|QIBA CT Volumetrics,Group 1B:(Patient Image Datasets, 4.19.2011 - Dr. McNitt-Gray]]
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*[[Media:Proposed Group 1B Questions and Datasets 2008-2-10-Dr-McNitt-Gray.ppt|Proposed Group 1B Questions & Datases (2009-02-10) -- Feedback Welcome -- Dr. McNitt-Gray]]
 
*[[Media:Proposed Group 1B Questions and Datasets 2008-2-10-Dr-McNitt-Gray.ppt|Proposed Group 1B Questions & Datases (2009-02-10) -- Feedback Welcome -- Dr. McNitt-Gray]]

Revision as of 14:44, 19 April 2011

Current Goals & Status:

  • Question: What is measurement variation for different software/user methods for a reference set of image data?
    • Intra-rater reliability, i.e., test-retest precision for pre-specified tumors (a.k.a. "marked up") by single image analysis operators
    • Ground Truth: Pooled from all image analyses meeting quality criteria to estimate confidence intervals around "true" volume.
    • Approach: Patient Change Data from RIDER Database:
      • > 300 cases as of Sept 2008
      • Most with multiple time points
      • Few with thin slice (<1.5 mm thick) image data
      • No contours provided (user has to provide their own as part of measurement)
      • no outcome data
      • Publicly Available on NCIA
  • Related Profile: Lung Vol Quantification - Measurement Activity


  • Conference Paper on Reproducibility and Accuracy of Uni- and Bi-Dimensional Tumor Measurements from MRI and CT Volumes, which looks at RECIST, WHO and Volume measurements.