Results 41 to 50 of about 2,592,085 (298)

Standardization and Quantitative Imaging with Photon Counting Detector CT

Investigative Radiology, 2023
CT images display anatomic structures across 3 dimensions and are highly quantitative; they are the reference standard for 3-dimensional geometric measurements and are used for 3-D printing of anatomic models and custom implants, as well as for radiation
C. McCollough, K. Rajendran, S. Leng
semanticscholar   +1 more source

Quantum detector tomography of a time-multiplexed superconducting nanowire single-photon detector at telecom wavelengths [PDF]

, 2013
Superconducting nanowire single-photon detectors (SNSPDs) are widely used in telecom wavelength optical quantum information science applications. Quantum detector tomography allows the positive-operator-valued measure (POVM) of a single-photon detector ...
Dorenbos, SN, Walmsley, IA, Natarajan, C.M., Zwiller, V, Walmsley, I.A. (author), Hadfield, R.H. (author), Coldenstrodt-Ronge, H, Zhang, L. (author), Zwiller, Val, Coldenstrodt-Ronge, H. (author), Natarajan, C.M. (author), Natarajan, Chandra M, Zwiller, V., Walmsley, Ian, Dorenbos, S.N. (author), Zhang, Lijian, Zhang, L., Dorenbos, S.N., Hadfield, R., Zwiller, V. (author), Donati, G. (author), Donati, Gaia, Natarajan, CM, Walmsley, Ian A., Coldenstrodt-Ronge, Hendrik, Walmsley, I.A., Hadfield, Robert H, Hadfield, R.H., Dorenbos, Sander N., Donati, G., Donati, G, Zhang, L, Hadfield, RH, Coldenstrodt-Ronge, H.   +33 more
core   +2 more sources

Three-Dimensional Object Recognition With Multiview Photon-Counting Sensing and Imaging

IEEE Photonics Journal, 2009
We present a method for photon-counting sensing with three-dimensional (3-D) integral imaging for object recognition using independent component analysis (ICA). A lenslet array is used to capture multiple perspective images of a 3-D scene projected onto
Cuong Manh Do, Bahram Javidi
doaj   +1 more source

Study on Single Photon Imaging Method for Permanent Shadow Crater of the Moon [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The detection of the permanent shadow area of the moon is currently a research hotspot. As the name suggests, there is no light in the permanent shadow area, and traditional methods cannot image it. This paper proposes a single photon imaging method that
Z. Xia
doaj   +1 more source

An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar

Entropy, 2021
Photon counting lidar for long-range detection faces the problem of declining ranging performance caused by background noise. Current anti-noise methods are not robust enough in the case of weak signal and strong background noise, resulting in poor ...
Mingwei Huang, Zijing Zhang, Jiaheng Xie, Jiahuan Li, Yuan Zhao   +4 more
doaj   +1 more source

A New Frontier in Temporal Bone Imaging: Photon-Counting Detector CT Demonstrates Superior Visualization of Critical Anatomic Structures at Reduced Radiation Dose

American Journal of Neuroradiology, 2022
Temporal bone CT images obtained on a photon-counting detector CT scanner were rated as having superior spatial resolution and more critical structure visualization than those obtained on a conventional energy-integrating detector scanner, even with a ...
J. C. Benson, K. Rajendran, J. Lane, F. Diehn, N. Weber, J. Thorne, N. Larson, J. G. Fletcher, C. H. McCollough, S. Leng   +9 more
semanticscholar   +1 more source

Ultra-High-Resolution Coronary CT Angiography With Photon-Counting Detector CT

Investigative Radiology, 2022
Objectives The aim of this study was to evaluate the feasibility and quality of ultra-high-resolution coronary computed tomography angiography (CCTA) with dual-source photon-counting detector CT (PCD-CT) in patients with a high coronary calcium load ...
V. Mergen, T. Sartoretti, M. Baer-Beck, B. Schmidt, M. Petersilka, J. Wildberger, A. Euler, M. Eberhard, H. Alkadhi   +8 more
semanticscholar   +1 more source

Analysis of detector performance in a gigahertz clock rate quantum key distribution system [PDF]

, 2011
We present a detailed analysis of a gigahertz clock rate environmentally robust phase-encoded quantum key distribution (QKD) system utilizing several different single-photon detectors, including the first implementation of an experimental resonant cavity
Mikio Fujiwara, R. H. Hadfield, Townsend, Paul D., Shigehito Miki, Wang, Zhen, C. M. Natarajan, GHIONI, MASSIMO ANTONIO, Collins, R.J., Garcia-Martinez, Maria-Jose, M. Fujiwara, Robert J Collins, M. Sasaki, Tanner, Michael G.; id_orcid, Patrick J Clarke, Sasaki, M., Wang, Z., R. J. Collins, Chandra M Natarajan, Buller, Gerald S., N. J. Krichel, O'Connor, John A., Gerald S Buller, María-José García-Martínez, García-Martínez, M.-J., Masahide Sasaki, Fujiwara, M., Krichel, N.J., Tanner, M.G., G. S. Buller, Nils J Krichel, Ivan Rech, Hadfield, Robert H., Rech, Ivan, Ghioni, M., Aongus McCarthy, Natarajan, C.M., Rech, I., P. A. Hiskett, Gulinatti, Angelo, Collins, Robert J., Townsend, P., Robert H Hadfield, M. García Martínez, A. McCarthy, P. J. Clarke, Miki, Shigehito, Massimo Ghioni, Angelo Gulinatti, Gulinatti, A., Paul D Townsend, Miki, S., Zhen Wang, S. Miki, Buller, G.S., Hiskett, P.A., Hiskett, Philip A., Fujiwara, Mikio, M. G. Tanner, Hadfield, R., McCarthy, A., John A O'Connor, Natarajan, Chandra M., Michael G Tanner, O'Connor, J.A., Philip A Hiskett, McCarthy, Aongus, Ghioni, Massimo, Z. Wang, P. D. Townsend, Krichel, Nils J., J. A. O'Connor, Clarke, P.J., Clarke, Patrick J., Sasaki, Masahide   +73 more
core   +1 more source

Evaluation and Improvement of Lidar Performance Based on Temporal and Spatial Variance Calculation

Applied Sciences, 2019
Poisson distributions have the characteristic of equality between their variance and mean values. By constructing a calculation model of the temporal variance and spatial variance, the relationship between the variance and mean values of lidar analog ...
Fei Gao, Xinxin Xu, Qingsong Zhu, Li Wang, Tingyao He, Longlong Wang, Samo Stanič, Dengxin Hua   +7 more
doaj   +1 more source

Effect of Deep-Level Defects on the Performance of CdZnTe Photon Counting Detectors

Sensors, 2020
The effect of deep-level defects is a key issue for the applications of CdZnTe high-flux photon counting devices of X-ray irradiations. However, the major trap energy levels and their quantitive relationship with the device’s performance are not yet ...
Yingrui Li, Gangqiang Zha, Dengke Wei, Fan Yang, Jiangpeng Dong, Shouzhi Xi, Lingyan Xu, Wanqi Jie   +7 more
doaj   +1 more source