CT artifacts in virtual colonoscopy

Bruce R. Whiting; Elizabeth G. McFarland; Casey Dellabarca; Barry S. Brunsden

doi:10.1117/12.349579

20 May 1999 CT artifacts in virtual colonoscopy

Bruce R. Whiting, Elizabeth G. McFarland, Casey Dellabarca, Barry S. Brunsden

Proceedings Volume 3660, Medical Imaging 1999: Physiology and Function from Multidimensional Images; (1999) https://doi.org/10.1117/12.349579
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

A phantom representation of typical colon structures with precisely known geometrical measurements was designed and fabricated. Computed tomography (CT) data were collected using a range of protocols typical for spiral CT colonography. Analysis methods were developed to measure the acquired geometry of the phantom data and characterize distortions/degradation. Simple models were proposed to explain the trends in degradation in the acquisition process versus scanner protocol. Preliminary results indicate that degradation due to CT acquisition will not significantly impact the detection of clinically relevant lesions (dimensions greater than 1 cm). However, the CT acquisition process does place a lower limit on detection size of several millimeters.

Citation Download Citation

Bruce R. Whiting, Elizabeth G. McFarland, Casey Dellabarca, and Barry S. Brunsden "CT artifacts in virtual colonoscopy", Proc. SPIE 3660, Medical Imaging 1999: Physiology and Function from Multidimensional Images, (20 May 1999); https://doi.org/10.1117/12.349579

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