SU-F-J-212: Enabling Conventional Cone Beam CT with the Capability of Dual Energy Imaging Using a Simple Add-On Beam Modifier

2016 ◽  
Vol 43 (6Part12) ◽  
pp. 3457-3457
Author(s):  
R Vinke ◽  
S Takao ◽  
K Umegaki ◽  
H Shirato ◽  
H Peng ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Dual Energy Imaging

scholarly journals A Method to Improve Electron Density Measurement of Cone-Beam CT Using Dual Energy Technique

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Kuo Men ◽  
Jian-Rong Dai ◽  
Ming-Hui Li ◽  
Xin-Yuan Chen ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Electron Density ◽  
Cone Beam Ct ◽  
Density Measurement ◽  
Dual Energy ◽  
Cone Beam ◽  
Imaging Method ◽  
Basis Material ◽  
X Ray ◽  
Dual Energy Imaging ◽  
Set Up

Purpose. To develop a dual energy imaging method to improve the accuracy of electron density measurement with a cone-beam CT (CBCT) device.Materials and Methods. The imaging system is the XVI CBCT system on Elekta Synergy linac. Projection data were acquired with the high and low energy X-ray, respectively, to set up a basis material decomposition model. Virtual phantom simulation and phantoms experiments were carried out for quantitative evaluation of the method. Phantoms were also scanned twice with the high and low energy X-ray, respectively. The data were decomposed into projections of the two basis material coefficients according to the model set up earlier. The two sets of decomposed projections were used to reconstruct CBCT images of the basis material coefficients. Then, the images of electron densities were calculated with these CBCT images.Results. The difference between the calculated and theoretical values was within 2% and the correlation coefficient of them was about 1.0. The dual energy imaging method obtained more accurate electron density values and reduced the beam hardening artifacts obviously.Conclusion. A novel dual energy CBCT imaging method to calculate the electron densities was developed. It can acquire more accurate values and provide a platform potentially for dose calculation.

scholarly journals Dual-energy imaging of bone marrow edema on a dedicated multi-source cone-beam CT system for the extremities

2015 ◽  
Author(s):  
W. Zbijewski ◽  
A. Sisniega ◽  
J. W. Stayman ◽  
G. Thawait ◽  
N. Packard ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Edema ◽  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Dual Energy Imaging ◽  
Ct System ◽  
Marrow Edema

TU-G-110-02: Contrast-Enhanced Dual-Energy Cone-Beam CT for Musculoskeletal Radiology

2011 ◽  
Vol 38 (6Part30) ◽  
pp. 3784-3784
Author(s):  
W Zbijewski ◽  
J Stayman ◽  
Y Ding ◽  
P Prakash ◽  
A Machado ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Musculoskeletal Radiology ◽  
Contrast Enhanced ◽  
Energy Cone

Robust Algorithm for Denoising of Photon-Limited Dual-Energy Cone Beam CT Projections

2020 ◽  
Author(s):  
Luis A. Zavala-Mondragon ◽  
Fons van der Sommen ◽  
Danny Ruijters ◽  
Klaus J. Engel ◽  
Heidrun Steinhauser ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Robust Algorithm ◽  
Energy Cone

scholarly journals Noise reduction in material decomposition for low-dose dual-energy cone-beam CT

2013 ◽  
Author(s):  
W. Zbijewski ◽  
G. Gang ◽  
A. S. Wang ◽  
J. W. Stayman ◽  
K. Taguchi ◽  
...  
Keyword(s):  
Noise Reduction ◽  
Low Dose ◽  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Material Decomposition ◽  
Energy Cone

scholarly journals Optimizing dual energy cone beam CT protocols for preclinical imaging and radiation research

2017 ◽  
Vol 90 (1069) ◽  
pp. 20160480 ◽  
Author(s):  
Lotte E J R Schyns ◽  
Isabel P Almeida ◽  
Stefan J van Hoof ◽  
Benedicte Descamps ◽  
Christian Vanhove ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Preclinical Imaging ◽  
Energy Cone ◽  
Radiation Research

scholarly journals Cascaded systems analysis of noise and detectability in dual-energy cone-beam CT

2012 ◽  
Vol 39 (8) ◽  
pp. 5145-5156 ◽  
Author(s):  
Grace J. Gang ◽  
Wojciech Zbijewski ◽  
J. Webster Stayman ◽  
Jeffrey H. Siewerdsen
Keyword(s):  
Systems Analysis ◽  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Cascaded Systems ◽  
Energy Cone

WE-G-110-02: A Cascaded Systems Model for Imaging Performance and Task-Based Optimization in Dual-Energy Cone-Beam CT

2011 ◽  
Vol 38 (6Part33) ◽  
pp. 3833-3833
Author(s):  
G Gang ◽  
P Prakash ◽  
W Zbijewski ◽  
J Stayman ◽  
J Siewerdsen
Keyword(s):  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Systems Model ◽  
Cascaded Systems ◽  
Energy Cone ◽  
Imaging Performance ◽  
And Task

SU-F-I-06: Evaluation of Imaging Dose for Modulation Layer Based Dual Energy Cone-Beam CT

2016 ◽  
Vol 43 (6Part7) ◽  
pp. 3387-3387
Author(s):  
Eunbin Ju ◽  
SoHyun Ahn ◽  
Samju Cho ◽  
Ki Chang Keum ◽  
Rena Lee
Keyword(s):  
Cone Beam Ct ◽  
Dual Energy ◽  
Cone Beam ◽  
Energy Cone ◽  
Imaging Dose

scholarly journals Dual-energy cone-beam CT with a flat-panel detector: Effect of reconstruction algorithm on material classification

2014 ◽  
Vol 41 (2) ◽  
pp. 021908 ◽  
Author(s):  
W. Zbijewski ◽  
G. J. Gang ◽  
J. Xu ◽  
A. S. Wang ◽  
J. W. Stayman ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Reconstruction Algorithm ◽  
Dual Energy ◽  
Cone Beam ◽  
Flat Panel ◽  
Flat Panel Detector ◽  
Material Classification ◽  
Energy Cone ◽  
Detector Effect
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