High resolution, full field of view, whole body photon-counting detector CT: system assessment and initial experience

2021 ◽  
Author(s):  
Kishore Rajendran ◽  
Jeffrey Marsh ◽  
Martin Petersilka ◽  
André Henning ◽  
Elisabeth Shanblatt ◽  
...  
Keyword(s):  
High Resolution ◽  
Photon Counting ◽  
Field Of View ◽  
Whole Body ◽  
Initial Experience ◽  
Full Field ◽  
Photon Counting Detector ◽  
System Assessment ◽  
Ct System

scholarly journals Full field-of-view, high-resolution, photon-counting detector CT: technical assessment and initial patient experience

2021 ◽  
Author(s):  
Kishore Rajendran ◽  
Martin Petersilka ◽  
Andre Henning ◽  
Elisabeth Shanblatt ◽  
Jeffrey F Marsh Jr ◽  
...  
Keyword(s):  
High Resolution ◽  
Patient Experience ◽  
Photon Counting ◽  
Field Of View ◽  
Full Field ◽  
Photon Counting Detector ◽  
Technical Assessment

scholarly journals Evaluation of conventional imaging performance in a research whole-body CT system with a photon-counting detector array

2016 ◽  
Vol 61 (4) ◽  
pp. 1572-1595 ◽  
Author(s):  
Zhicong Yu ◽  
Shuai Leng ◽  
Steven M Jorgensen ◽  
Zhoubo Li ◽  
Ralf Gutjahr ◽  
...  
Keyword(s):  
Photon Counting ◽  
Detector Array ◽  
Whole Body ◽  
Conventional Imaging ◽  
Photon Counting Detector ◽  
Whole Body Ct ◽  
Ct System ◽  
Imaging Performance ◽  
Body Ct

scholarly journals Feasibility study of portable multi-energy computed tomography with photon-counting detector for preclinical and clinical applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chang-Lae Lee ◽  
Key Jo Hong ◽  
Namwoo Kim ◽  
Kwanhee Han ◽  
Dongkyu Kim ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Spatial Resolution ◽  
Liver Tumors ◽  
Photon Counting ◽  
Clinical Applications ◽  
Tissue Segmentation ◽  
Post Contrast ◽  
Photon Counting Detector ◽  
Ct System

AbstractIn this study, preclinical experiments were performed with an in-house developed prototypal photon-counting detector computed tomography (PCD CT) system. The performance of the system was compared with the conventional energy-integrating detector (EID)-based CT, concerning the basic image quality biomarkers and the respective capacities for material separation. The pre- and the post-contrast axial images of a canine brain captured by the PCD CT and EID CT systems were found to be visually similar. Multi-energy images were acquired using the PCD CT system, and machine learning-based material decomposition was performed to segment the white and gray matters for the first time in soft tissue segmentation. Furthermore, to accommodate clinical applications that require high resolution acquisitions, a small, native, high-resolution (HR) detector was implemented on the PCD CT system, and its performance was evaluated based on animal experiments. The HR acquisition mode improved the spatial resolution and delineation of the fine structures in the canine’s nasal turbinates compared to the standard mode. Clinical applications that rely on high-spatial resolution expectedly will also benefit from this resolution-enhancing function. The results demonstrate the potential impact on the brain tissue segmentation, improved detection of the liver tumors, and capacity to reconstruct high-resolution images both preclinically and clinically.

scholarly journals A Universal Protocol for Abdominal CT Examinations Performed on a Photon-Counting Detector CT System

2020 ◽  
Vol 55 (4) ◽  
pp. 226-232
Author(s):  
Wei Zhou ◽  
Gregory J. Michalak ◽  
Jayse M. Weaver ◽  
Hao Gong ◽  
Lifeng Yu ◽  
...  
Keyword(s):  
Photon Counting ◽  
Abdominal Ct ◽  
Photon Counting Detector ◽  
Ct System ◽  
Universal Protocol

scholarly journals Spectral performance of a whole-body research photon counting detector CT: quantitative accuracy in derived image sets

2017 ◽  
Vol 62 (17) ◽  
pp. 7216-7232 ◽  
Author(s):  
Shuai Leng ◽  
Wei Zhou ◽  
Zhicong Yu ◽  
Ahmed Halaweish ◽  
Bernhard Krauss ◽  
...  
Keyword(s):  
Photon Counting ◽  
Whole Body ◽  
Photon Counting Detector ◽  
Quantitative Accuracy ◽  
Spectral Performance

scholarly journals Dual energy X-ray beam ptycho-fluorescence imaging

2021 ◽  
Vol 28 (6) ◽  
Author(s):  
Silvia Cipiccia ◽  
Francesco Brun ◽  
Vittorio Di Trapani ◽  
Christoph Rau ◽  
Darren J. Batey
Keyword(s):  
Fresnel Zone ◽  
Imaging Techniques ◽  
Photon Counting ◽  
Field Of View ◽  
Step Size ◽  
X Ray ◽  
Single Beam ◽  
Photon Counting Detector ◽  
Nanoscale Imaging ◽  
The Difference

X-ray ptychography and X-ray fluorescence are complementary nanoscale imaging techniques, providing structural and elemental information, respectively. Both methods acquire data by scanning a localized beam across the sample. X-ray ptychography processes the transmission signal of a coherent illumination interacting with the sample, to produce images with a resolution finer than the illumination spot and step size. By enlarging both the spot and the step size, the technique can cover extended regions efficiently. X-ray fluorescence records the emitted spectra as the sample is scanned through the localized beam and its spatial resolution is limited by the spot and step size. The requisites for fast ptychography and high-resolution fluorescence appear incompatible. Here, a novel scheme that mitigates the difference in requirements is proposed. The method makes use of two probes of different sizes at the sample, generated by using two different energies for the probes and chromatic focusing optics. The different probe sizes allow to reduce the number of acquisition steps for the joint fluorescence–ptychography scan compared with a standard single beam scan, while imaging the same field of view. The new method is demonstrated experimentally using two undulator harmonics, a Fresnel zone plate and an energy discriminating photon counting detector.

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