TY - JOUR
T1 - Spiral CT colonography (virtual colonoscopy)
T2 - Proceedings of the 1999 Medical Imaging - Physiology and Function from Multidimensional Images
AU - McFarland, Elizabeth G.
AU - Brink, James A.
AU - Heiken, Jay P.
AU - Balfe, Dennis M.
AU - Hirselj, Daniel A.
AU - Pilgram, Thomas K.
AU - Argiro, Vincent
AU - Littenberg, Benjamin
PY - 1999
Y1 - 1999
N2 - Spiral CT colonography (virtual colonoscopy) is a rapidly developing field with both 2D and 3D display techniques currently used for visualization of colorectal polyps. Our purpose was to perform a multiobserver reader study in a test set of 30 colonic segments to determine the diagnostic performance of 2D MPR, 3D thick slab MPR, and 3D PVR, using colonoscopy as the standard of reference. In this study, CT colonography was performed in a cohort of patients with known polyps immediately prior to colonoscopy, following using a standard bowel prep and air-insufflation. A test set of 30 colonic segments was created, with a total of 22 lesions present, with all findings verified by colonoscopy. Three image displays were tested in this study: 2D multiplanar reformation (MPR), 3D thick slab MPR following 2D MPR review, and 3D perspective volume rendered (PVR) displays following 2D MPR review. Readers independently analyzed each test case in a controlled setting and scored their confidence on a 5 point scale of each focal finding observed. Our results demonstrated high sensitivity for detection of colorectal polyps using 2D MPR in this library of 30 colonic segments. Reader analysis with 3D PVR demonstrated improved characterization of focal findings in selected cases.
AB - Spiral CT colonography (virtual colonoscopy) is a rapidly developing field with both 2D and 3D display techniques currently used for visualization of colorectal polyps. Our purpose was to perform a multiobserver reader study in a test set of 30 colonic segments to determine the diagnostic performance of 2D MPR, 3D thick slab MPR, and 3D PVR, using colonoscopy as the standard of reference. In this study, CT colonography was performed in a cohort of patients with known polyps immediately prior to colonoscopy, following using a standard bowel prep and air-insufflation. A test set of 30 colonic segments was created, with a total of 22 lesions present, with all findings verified by colonoscopy. Three image displays were tested in this study: 2D multiplanar reformation (MPR), 3D thick slab MPR following 2D MPR review, and 3D perspective volume rendered (PVR) displays following 2D MPR review. Readers independently analyzed each test case in a controlled setting and scored their confidence on a 5 point scale of each focal finding observed. Our results demonstrated high sensitivity for detection of colorectal polyps using 2D MPR in this library of 30 colonic segments. Reader analysis with 3D PVR demonstrated improved characterization of focal findings in selected cases.
UR - http://www.scopus.com/inward/record.url?scp=0032593726&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0032593726
SN - 0277-786X
VL - 3660
SP - 106
EP - 108
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
Y2 - 21 February 1999 through 23 February 1999
ER -