Difference between revisions of "VolCT - Group 1B"
Jump to navigation
Jump to search
Line 14: | Line 14: | ||
*[[Vol-CT - 1B Group Call Summaries]] | *[[Vol-CT - 1B Group Call Summaries]] | ||
− | + | ||
− | *[[Media:Proposed Group 1B Questions and Datasets | + | *[[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:ACRIN 6678 QC Parmeters for CT Scan Measurements.pdf|ACRIN 6678 Quality Control Parameters for CT Scan Tumor Volumetric Measurements]] | *[[Media:ACRIN 6678 QC Parmeters for CT Scan Measurements.pdf|ACRIN 6678 Quality Control Parameters for CT Scan Tumor Volumetric Measurements]] |
Revision as of 18:51, 25 February 2009
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