Graphics Group, Computer Science Department, The University of Auckland

Department of Computer Science | University of Auckland

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	Computation of Digitally Reconstructed Radiographs for use in Radiotherapy Treatment Design
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	Computation of Digitally Reconstructed Radiographs for use in Radiotherapy Treatment Design. George W. Sherouse, Kevin L. Novins, and Edward L. Chaney. International Journal of Radiation Oncology, Biology and Physics, 18(3), March 1990.
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	The increasing use of 3-dimensional radiotherapy treatment design has created greater reliance on methods for computing images from CT data which correspond to the conventional simulation film. These images, known as computed or digitally-reconstructed radiographs, serve as reference images for verification of computer-designed treatments. Used with software that registers graphic overlays of target and anatomic structures, digitally reconstructed radiographs are also valuable tools for designing portal shape. We have developed radiograph reconstruction software that takes full advantage of the contrast and spatial detail inherent in the original CT data. This goal has been achieved by using a ray casting algorithm which explicitly takes into account every intersected voxel, and a heuristic approach for approximating the images that would result from purely photoelectric or Compton interactions. The software also offers utilities to superimpose outlines of anatomic structures field edges, beam crosshairs, and linear scales on digitally reconstructed radiographs. The pixel size of the computed image can be controlled, and several methods of interslice interpolation are offered. The software is written in modular format in the C language, and can stand alone or interface with other treatment planning software.
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Anderson, C.
Cha, R
Chai, Kai
Chung, Jae
Cooksey, C.
Dansted, P.
Du, Lilin
Fong, Y.
Govender, Sashan
Gu, Simon
Halstead, M.
Hamer, Sam
Handley, S.
Hitchner, Lewis
Holmberg, Nathan
Huai, Yongjian
Huang, In-Tai
James, B.S.
Kao, Stephen
Kulka, Peter
Lawrence, Joshua
Lee, J.
Li, Bo
Manke, Felix
McCord, Glenn
Mcleod, K.
Meng, Mong
NG., G.
Nixon, Daniel
Novins, Kevin
Otte, Robin
Plumpton, D.
Poon, David
Roche, G.
Sanders, Michael
Schenke, Stefan
Shao, Parker
stu, a
Wang, Shyh-Chyu
Wells, K.
Wil, J
Willmott, A.
Wong, C.M.
Wylie, C.
Yang, Ting
Zhang, Rui