Results 41 to 50 of about 1,208,754 (253)

Investigating Image Distortion and Its Impact on Material Quantification in Photon-counting Computed Tomography

Journal of Medical Physics
Background: Photon-counting computed tomography (PCCT) enables simultaneous spatial and spectral imaging for improved material discrimination. However, inaccuracies in scanner geometric calibration can introduce reconstruction distortions that degrade ...
Rayhan Uddin, Marzieh Anjomrouz, Neryda Duncan, Anthony Butler, Philip Butler   +4 more
doaj   +1 more source

Application of photon-counting CT in cardiovascular diseases [PDF]

Zhenduanxue lilun yu shijian
Photon-counting computed tomography （PCCT） is a revolutionary technological breakthrough in CT imaging over the past decade. Compared with traditional energy-integrating detector CT, PCCT performs imaging at the single-photon level at the detector layer,
WANG Mengzhen, BAO Shouyu, LIU Peng, YAN Fuhua, YANG Wenjie
doaj   +1 more source

Response Properties of Silicon Trench Photodiodes to Single α- and γ-Ray in Pulse Mode

IEEE Access, 2022
This study proposes a new silicon X-ray sensor structure for photon-counting computed tomography (CT), which is a next-generation low-dose X-ray imaging technique.
Tetsuya Ariyoshi
doaj   +1 more source

Compact-eight channel photon counting module with monolithic array detector

, 2007
We present a multichannel photon counting module that exploits a monolithic array of single-photon avalanche diodes (SPADs). The detector array consists of eight 50μm diameter SPADs featuring low dark counting rate and high photon detection efficiency ...
MARANGONI, STEFANO, RECH, IVAN, M. Ghioni, COVA, SERGIO, D. Resnati, S. Marangoni, RESNATI, DANIELE, GHIONI, MASSIMO ANTONIO, S. Cova, I. Rech   +9 more
core   +1 more source

A New Strategy for Creating Quantum Light Emitters Via Post‐Growth Hydrogen‐Ion Irradiation of III‐V Nanowires

Advanced Functional Materials, EarlyView.
A post‐growth method is demonstrated to realize energy‐tunable quantum emitters in GaAs/GaAsN/GaAs core–multishell nanowires on a Si substrate. By combining the N‐induced bandgap reduction with H‐ion irradiation, the GaAsN potential landscape is engineered, enabling isolated, narrow emission lines that function as single‐photon sources with g(2)(0) ∼ 0.
Akant Sagar Sharma, Paolo De Vincenzi, Nadine Denis, Francesca Santangeli, Riccardo Pallucchi, Harikrishnan Gopalakrishnan, Elena Blundo, Antonio Polimeni, Marco Felici, Fumitaro Ishikawa, Marta De Luca   +10 more
wiley   +1 more source

Triple-source saddle-curve cone-beam photon counting CT image reconstruction: A simulation study

Zeitschrift für Medizinische Physik
Purpose: The most common detector material in the PC CT system, cannot achieve the best performance at a relatively higher photon flux rate. In the reconstruction view, the most commonly used filtered back projection, is not able to provide sufficient ...
Lin Xin, Weihai Zhuo, Qian Liu, Tianwu Xie, Habib Zaidi   +4 more
doaj   +1 more source

Spectral photon-counting CT imaging of colorectal peritoneal metastases: initial experience in rats

, 2020
International audienceComputed tomography imaging plays a major role in the preoperative assessment of tumor burden by providing an accurate mapping of the distribution of peritoneal metastases (PM).
Rousset, Pascal, Képénékian, Vahan, Boussel, Loic, Bonnot, Pierre-Emmanuel, Si-Mohamed, Salim, Blanchet, Christophe, Thivolet, Arnaud, Douek, Philippe   +7 more
core   +1 more source

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

Advanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong, Qihang Wang, Andre E. Vellwock, Sinuhe Perea Puente, Tingting Zhu, Jia Hui Lim, Kadda Medjoubi, Sebastian Hoerl, Erika Griesshaber, Wolfgang W. Schmahl, Yannicke Dauphin, Emeline Raguin, Peter Werner, Francesco Stellacci, Michael V. Swain, Peter Fratzl, Shahrouz Amini   +16 more
wiley   +1 more source

Photon-Counting Micro-CT for Bone Morphometry in Murine Models

Tomography
Background/Objectives: This study evaluates photon-counting CT (PCCT) for the imaging of mouse femurs and investigates how APOE genotype, sex, and humanized nitric oxide synthase (HN) expression influence bone morphology during aging.
Rohan Nadkarni, Zay Yar Han, Alex J. Allphin, Darin P. Clark, Alexandra Badea, Cristian T. Badea   +5 more
doaj   +1 more source

Configuration‐Encoded Cell Alignment by Light‐Gated Silicon Photovoltaic Microcell Arrays

Advanced Functional Materials, EarlyView.
Light‐gated silicon photovoltaic microcells convert pulsed illumination into localized electrical cues. Arranging otherwise similar microcells into four‐lobed, six‐lobed, or circular patterns directs fibroblasts into corresponding local arrangements without wired stimulation.
Yifan Tao, Ilayda Namli, Joseph Christakiran Moses, Youdi Liu, Suihong Liu, Syed Hasan Askari Rizvi, Yasar Ozer Yilmaz, Ibrahim T. Ozbolat   +7 more
wiley   +1 more source