VolCT - Group 1B
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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
- Vol-CT - 1B Group Call Summaries
- Proposed Group 1B Questions & Datasets (2008-11-05-v2) -- This is the powerpoint file that the 1B Group developed from our last conf call. Comments welcome - Mike