Transparent rendering of intraluminal contrast for 3D polyp visualization at CT colonography.
We developed a classifier that permits transparent rendering of both tagging material and air to facilitate interpretation of tagged computed tomographic (CT) colonography. With this technique, a reader can simultaneously appreciate polyps on endoluminal views both covered with tagging material and against air, along with unmodified 2-dimensional CT images. Evaluated with 49 polyps from 26 patients (data from public National Library of Medicine, Health Insurance Portability and Accountability Act compliant), 3 readers were able to determine the presence/absence of polyps in tagged locations with equivalent accuracy compared with polyps in air. This method offers an alternative way to visualize tagged CT colonography.
Shi
Rong
R
Department of Radiology, Stanford University Medical Center, CA, USA. rshi@stanford.edu
Napel
Sandy
S
Rosenberg
Jarrett K
JK
Shin
Lewis K
LK
Walsh
Cynthia F
CF
Mogensen
Monique A
MA
Joshi
Ajay Jayant
AJ
Pankhudi
Pankhudi
P
Beaulieu
Christopher F
CF
D000465:Algorithms; D019540:Area Under Curve; D016477:Artifacts; D003111:Colonic Polyps / Q000145:classification / Q000000981:diagnostic imaging*; D023881:Colonography, Computed Tomographic; D003287:Contrast Media; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D012372:ROC Curve; D011856:Radiographic Image Enhancement / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted; D012680:Sensitivity and Specificity
D003287:Contrast Media