VolCT - Group 1B: Difference between revisions

Revision as of 13:10, 16 December 2008

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

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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: [[CT_Lung_Nodule_Volume_Quantification_Profile#Activity:_Measurement| Lung Vol Quantification - Measurement Activity]]
 *[[Vol-CT  - 1B Group Call Summaries]]
 *[[Media:Proposed_Group_1B_Questions_and_Datasets_2008-11-05v2.ppt|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]]