Multi-contrast imaging on dual-source photon-counting-detector (PCD) CT

2019 ◽  
Author(s):  
Shengzhen Tao ◽  
Kishore Rajendran ◽  
Cynthia H. McCollough ◽  
Shuai Leng
Keyword(s):  
Photon Counting ◽  
Contrast Imaging ◽  
Photon Counting Detector ◽  
Dual Source

scholarly journals Feasibility of multi‐contrast imaging on dual‐source photon counting detector (PCD) CT: An initial phantom study

2019 ◽  
Vol 46 (9) ◽  
pp. 4105-4115 ◽  
Author(s):  
Shengzhen Tao ◽  
Kishore Rajendran ◽  
Cynthia H. McCollough ◽  
Shuai Leng
Keyword(s):  
Photon Counting ◽  
Phantom Study ◽  
Contrast Imaging ◽  
Photon Counting Detector ◽  
Dual Source

scholarly journals Multi-energy CT imaging for large patients using dual-source photon-counting detector CT

2020 ◽  
Vol 65 (17) ◽  
pp. 17NT01
Author(s):  
Shengzhen Tao ◽  
Jeffrey F Marsh ◽  
Ashley Tao ◽  
Greg J Michalak ◽  
Kishore Rajendran ◽  
...  
Keyword(s):  
Photon Counting ◽  
Ct Imaging ◽  
Photon Counting Detector ◽  
Dual Source

scholarly journals Dual-source photon counting detector CT with a tin filter: a phantom study on iodine quantification performance

2019 ◽  
Vol 64 (11) ◽  
pp. 115019 ◽  
Author(s):  
Ashley Tao ◽  
Richard Huang ◽  
Shengzhen Tao ◽  
Gregory J Michalak ◽  
Cynthia H McCollough ◽  
...  
Keyword(s):  
Photon Counting ◽  
Phantom Study ◽  
Photon Counting Detector ◽  
Iodine Quantification ◽  
Dual Source ◽  
Tin Filter

A Geant4 tool for edge-illumination X-ray phase-contrast imaging

2022 ◽  
Vol 17 (01) ◽  
pp. C01043
Author(s):  
L. Brombal ◽  
L. Rigon ◽  
F. Arfelli ◽  
R.H. Menk ◽  
F. Brun
Keyword(s):  
Phase Contrast ◽  
Signal To Noise Ratio ◽  
Photon Counting ◽  
Spatial Coherence ◽  
Spot Size ◽  
Contrast Imaging ◽  
Extended Source ◽  
X Ray ◽  
Photon Counting Detector ◽  
Theoretical Predictions

Abstract The PEPI project is developing a new experimental facility integrating a chromatic photon-counting detector within an edge-illumination (EI) phase-contrast setup. In this context, a novel Geant4-based simulation tool has been introduced with the aim of defining the optimal design of the experimental setup. The code includes a custom X-ray refraction process and allows simulating the whole EI system, comprising a polychromatic and extended source, absorbing masks, substrates, their movement during acquisition, and X-ray detection. In this paper, a realistic spectral detector model is introduced and its energy response validated against experimental data acquired with synchrotron radiation at energies between 26 and 50 keV. Moreover, refraction and transmission images of a plastic phantom are reconstructed from simulation data and successfully compared with theoretical predictions. Finally, an optimization study aiming at finding the effect of the X-ray focal spot size (i.e. spatial coherence) on image quality is presented; the results suggest that, in the considered configuration, the system can tolerate source sizes up to 30 μm, while, for a fixed exposure time, the best signal-to-noise ratio in refraction images is found for source sizes in the order of 10 to 15 μm.

Improvement of the visibility for x-ray phase contrast imaging using photon counting detector

2016 ◽  
Author(s):  
S. Sano ◽  
K. Tanabe ◽  
T. Yoshimuta ◽  
K. Kimura ◽  
T. Shirai ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Photon Counting ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Photon Counting Detector

scholarly journals Radiation dose efficiency of multi-energy photon-counting-detector CT for dual-contrast imaging

2019 ◽  
Vol 64 (24) ◽  
pp. 245003 ◽  
Author(s):  
Liqiang Ren ◽  
Kishore Rajendran ◽  
Cynthia H McCollough ◽  
Lifeng Yu
Keyword(s):  
Radiation Dose ◽  
Photon Counting ◽  
Contrast Imaging ◽  
Energy Photon ◽  
Photon Counting Detector ◽  
Dose Efficiency
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