[Insight-users] The NCI “CT Colonography” (CTC) image collection (update)

[Luis Ibanez]

FROM:
Carl Jaffe, MD,
Consultant, NCI Cancer Imaging Program,
Jaffec1 at mail.nih.gov


The NCI “CT Colonography” (CTC) image collection, downloadable as
DICOM studies at https://imaging.nci.nih.gov/ncia/  has now been
enlarged to a total of 827 cases acquired from the optically
(OC)-validated ACRIN CTC trial in which subjects underwent same-day
CTC and OC.


A description of the collection can be found at:

https://wiki.nci.nih.gov/download/attachments/13502514/NCIA+CTC+collection+explained.doc



A key to the OC validation tables can be found at:

https://wiki.nci.nih.gov/download/attachments/13502514/Polyp+description+key+table.tiff



Three polyp-size-grouped case lists can be found as:

‘No polyp found’ (243 cases);

https://wiki.nci.nih.gov/download/attachments/13502514/NCIA+CTC+no+polyp+found.xls



6 to 9 mm polyps (69 cases);

https://wiki.nci.nih.gov/download/attachments/13502514/NCIA+CTC+6+to+9+mm+polyps.xls



and “larger than 10 mm” (35 cases)
https://wiki.nci.nih.gov/download/attachments/13502514/NCIA+CTC+large+10+mm+polyps.xls


This subset of the ACRIN 2600+ total trial-accrued cases
http://acrin.org/TabID/151/Default.aspx recapitulates the incidence
and polyp size proportions found in the general population.


As a result of data-sharing by the ACRIN organization, NCI provides
this collection to the biomedical research community as a resource
that may be used as a training set to improve current day
computational methods for colon polyp screening,