Accession Number : ADA480276


Title :   Cone-Beam Computed Tomography for Image-Guided Radiation Therapy of Prostate Cancer


Descriptive Note : Annual summary rept. 11 Dec 2006-2007


Corporate Author : CHICAGO UNIV IL


Personal Author(s) : Cho, Seungryong


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a480276.pdf


Report Date : Jan 2008


Pagination or Media Count : 55


Abstract : The success of intensity-modulated radiation therapy (IMRT) or 4-D conformal radiation therapy (CRT) is heavily reliant on accurate image guidance in prostate cancer treatment. Cone-beam computed tomography (CBCT) is becoming one of the dominant imaging modalities for image-guidance, but current technology based on Feldkamp algorithm for image reconstruction from a circular scanning trajectory does not yield sufficient quality of images. In addition, imaging-radiation dose is one of the key issues, which has to be minimized or optimized. We report innovative CBCT scanning methods and corresponding image reconstruction algorithms that can increase the accuracy of the images and/or reduce patient dose from CBCT. Reverse helical CBCT has been developed, region-of-interest image reconstruction methods have been explored, and a few-view CBCT approach has been proposed.


Descriptors :   *TOMOGRAPHY , *PROSTATE CANCER , ALGORITHMS , COMPUTERIZED SIMULATION , IMAGE RECONSTRUCTION , RADIOTHERAPY , RADIATION DOSAGE , ACCURACY


Subject Categories : Medicine and Medical Research
      Numerical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE