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The August 2009 Size Estimations from a June 2009 Snapshot

At the end of May 2009, the NCI made available, in the newly renamed National Biomedical Imaging Archive (NBIA), an extended set of 401 CT scans, documented by the Lung Imaging Database Consortium (LIDC). This set includes the original 85 scans and adds 316 new scans; as there are two subjects with two scans each, the total number of subjects is 399.

All the scans and their XML documentation were downloaded and processed to extract the radiologists's drawn boundaries for nodules estimated to have a diameter of 3 mm or larger and to identify the unique regions of interests (ROI) corresponding to the (estimated) physical nodules. The boundaries were, then, analyzed to provide the volumetric size estimates by rasterizing them and computing the nodule volume as the product of the number of nodule voxels and the voxel size. Some of the scans or their documentations could not be fully processed and they are listed in the following sections of these notes.

Subjects with problems in the DICOM files

For the following subject there were missing frames in the scan:

13614193285030537

Subjects with no documentation

The following subjects had no ducumentation file:

13614193285030107
13614193285030633
13614193285030642
13614193285030644
13614193285030646
13614193285030647
13614193285030648
13614193285030649
13614193285030650
13614193285030653
13614193285030654

Subjects with other processing problems (updated 2/2/2010)

For the following subject there were other problems while processing the scan documentation:

13614193285030022
13614193285030037
13614193285030046
13614193285030057
13614193285030074
13614193285030078
13614193285030112
13614193285030148
13614193285030183
13614193285030192
13614193285030208
13614193285030209
13614193285030222
13614193285030223
13614193285030249
13614193285030258
13614193285030260
13614193285030264
13614193285030268
13614193285030281
13614193285030289
13614193285030296
13614193285030312
13614193285030313
13614193285030330
13614193285030338
13614193285030340
13614193285030343
13614193285030344
13614193285030345
13614193285030346
13614193285030352
13614193285030361
13614193285030362
13614193285030366
13614193285030368
13614193285030375
13614193285030388
13614193285030399
13614193285030407
13614193285030409
13614193285030424
13614193285030450
13614193285030459
13614193285030488
13614193285030490