Cone-beam CT image reconstruction with extended z range

2009 ◽  
Vol 36 (7) ◽  
pp. 3363-3370 ◽  
Author(s):  
Rainer Grimmer ◽  
Markus Oelhafen ◽  
Ulrik Elstrøm ◽  
Marc Kachelrieß
Keyword(s):  
Image Reconstruction ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Image ◽  
Ct Image Reconstruction

scholarly journals GPU-Based 3D Cone-Beam CT Image Reconstruction for Large Data Volume

2009 ◽  
Vol 2009 ◽  
pp. 1-8 ◽  
Author(s):  
Xing Zhao ◽  
Jing-jing Hu ◽  
Peng Zhang
Keyword(s):  
Image Reconstruction ◽  
Cone Beam Ct ◽  
Large Data ◽  
Circular Cone ◽  
Cone Beam ◽  
Projection Data ◽  
Ct Image ◽  
Reconstruction Process ◽  
Data Volume ◽  
Ct Image Reconstruction

Currently, 3D cone-beam CT image reconstruction speed is still a severe limitation for clinical application. The computational power of modern graphics processing units (GPUs) has been harnessed to provide impressive acceleration of 3D volume image reconstruction. For extra large data volume exceeding the physical graphic memory of GPU, a straightforward compromise is to divide data volume into blocks. Different from the conventional Octree partition method, a new partition scheme is proposed in this paper. This method divides both projection data and reconstructed image volume into subsets according to geometric symmetries in circular cone-beam projection layout, and a fast reconstruction for large data volume can be implemented by packing the subsets of projection data into the RGBA channels of GPU, performing the reconstruction chunk by chunk and combining the individual results in the end. The method is evaluated by reconstructing 3D images from computer-simulation data and real micro-CT data. Our results indicate that the GPU implementation can maintain original precision and speed up the reconstruction process by 110–120 times for circular cone-beam scan, as compared to traditional CPU implementation.

Motion-compensated iterative cone-beam CT image reconstruction with adapted blobs as basis functions

2008 ◽  
Vol 53 (23) ◽  
pp. 6777-6797 ◽  
Author(s):  
A A Isola ◽  
A Ziegler ◽  
T Koehler ◽  
W J Niessen ◽  
M Grass
Keyword(s):  
Image Reconstruction ◽  
Cone Beam Ct ◽  
Basis Functions ◽  
Cone Beam ◽  
Ct Image ◽  
Ct Image Reconstruction

SU-FF-I-43: Iterative Methods of Cone-Beam CT Image Reconstruction for Under-Sampled and Truncated Projection Data

2009 ◽  
Vol 36 (6Part3) ◽  
pp. 2444-2444
Author(s):  
I Yeung ◽  
L Dawson ◽  
Y Cho ◽  
D Moseley ◽  
R Case ◽  
...  
Keyword(s):  
Image Reconstruction ◽  
Iterative Methods ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Projection Data ◽  
Ct Image ◽  
Ct Image Reconstruction

scholarly journals Accelerated fast iterative shrinkage thresholding algorithms for sparsity-regularized cone-beam CT image reconstruction

2016 ◽  
Vol 43 (4) ◽  
pp. 1849-1872 ◽  
Author(s):  
Qiaofeng Xu ◽  
Deshan Yang ◽  
Jun Tan ◽  
Alex Sawatzky ◽  
Mark A. Anastasio
Keyword(s):  
Image Reconstruction ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Image ◽  
Iterative Shrinkage ◽  
Ct Image Reconstruction ◽  
Iterative Shrinkage Thresholding
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