Whole-Body Photon-Counting CT Imaging

The imaging system selected was a research whole-body PCD-CT scanner (Somatom CounT, Siemens Healthcare, Forchheim, Germany) with a cadmium telluride semiconductor^{5 (link),6 (link)}. The UHR mode was chosen for all scans performed^{5 (link)}. The iodinated intravascular contrast agent used in this study was Omnipaque^® 350 (GE Healthcare, Inc.). A vascular CT imaging protocol was used for all scans reported in this study. The scans were performed using the following parameters: 140 kV, 341 mAs, and energy threshold settings of 30 and 70 keV. Images were reconstructed using an 80 mm × 80 mm FOV, 1024×1024 matrix size, 1 mm slice thickness (yielding voxel size of 0.0781mm × 0.0781mm × 1 mm), and an iterative reconstruction algorithm with a sharp quantitative kernel (Q65f, SAFIRE).

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Marsh J J.r., Rajendran K., Tao S., Vercnocke A., Anderson J., Leng S., Ritman E, & McCollough C. (2020). A Blooming correction technique for improved vasa vasorum detection using an ultra-high-resolution photon-counting detector CT. Proceedings of SPIE--the International Society for Optical Engineering, 11312, 113124R.

Publication 2020

Somatom CounT Omnipaque® 350

Body Cadmium telluride Contrast agent Ct protocol Ct scanner Omnipaque Reconstruction Scans Vascular

Corresponding Organization :

Other organizations : WinnMed

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Variable analysis

independent variables

Imaging system (research whole-body PCD-CT scanner, Somatom CounT, Siemens Healthcare)
Imaging mode (UHR mode)
Intravascular contrast agent (Omnipaque® 350, GE Healthcare, Inc.)
Scan parameters (140 kV, 341 mAs, energy threshold settings of 30 and 70 keV)

dependent variables

Measured outcomes (not explicitly mentioned)

control variables

Vascular CT imaging protocol used for all scans
Image reconstruction parameters (80 mm × 80 mm FOV, 1024×1024 matrix size, 1 mm slice thickness, iterative reconstruction algorithm with a sharp quantitative kernel (Q65f, SAFIRE))

controls

No positive or negative controls were explicitly mentioned in the provided information.

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