Results 31 to 40 of about 1,646,093 (289)

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

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

Online Geometric Calibration of a Hybrid CT System for Ultrahigh-Resolution Imaging

Tomography, 2022
A hybrid imaging system consisting of a standard computed tomography (CT) scanner and a low-profile photon-counting detector insert in contact with the patient’s body has been used to produce ultrahigh-resolution images in a limited volume in chest scans
Dakota H. King, Muyang Wang, Eric E. Bennett, Dumitru Mazilu, Marcus Y. Chen, Han Wen   +5 more
doaj   +1 more source

Single photon source characterization with a superconducting single photon detector [PDF]

, 2005
Superconducting single photon detectors (SSPD) based on nanopatterned niobium nitride wires offer single photon counting at fast rates, low jitter, and low dark counts, from visible wavelengths well into the infrared.
Mirin, R.P., Nam, S.W., Gruber, S.S., Miller, A.J., Stevens, M.J., Hadfield, R., Schwall, R.E.   +6 more
core   +1 more source

Recent Advancements in CT Detectors: A Comprehensive Review [PDF]

Journal of Clinical and Diagnostic Research
The Computed Tomography (CT) scanners are widely used in the diagnostic and therapeutic medical fields due to their quick scanning times, excellent spatial resolution and widespread availability.
Amal Shaji, AF Fidha, Swati Kumari, Amita Digambar Dabholkar, Omkar Uttam Gaonkar   +4 more
doaj   +1 more source

Superconducting nanowire single-photon detectors: physics and applications [PDF]

, 2012
Single-photon detectors based on superconducting nanowires (SSPDs or SNSPDs) have rapidly emerged as a highly promising photon-counting technology for infrared wavelengths.
Hadfield, Robert H, Natarajan, C.M., Natarajan, Chandra M, Tanner, M.G., Hadfield, R., Tanner, Michael Geoffrey; id_orcid   +5 more
core   +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

Ge-on-Si single-photon avalanche diode detectors: design, modeling, fabrication, and characterization at wavelengths 1310 and 1550 nm [PDF]

, 2013
The design, modeling, fabrication, and characterization of single-photon avalanche diode detectors with an epitaxial Ge absorption region grown directly on Si are presented.
Lever, LJM, Paul, D.J., Buller, GS, Ikonic, Zoran, Warburton, Ryan E, Ikonic, Z, Myronov, Maksym, Knights, AP, Leadley, D. R. (David R.), Gallacher, Kevin, Kelsall, Robert W., Pilgrim, Neil J, Pilgrim, NJ, Paul, DJ, Myronov, M., Paul, Douglas J. (Professor of Semiconductor Devices), Allred, P, Intermite, G., Leadley, David R, Huante-Ceron, E, Kelsall, RW, Lever, Leon J M, Pilgrim, Neil J., Kelsall, R.W., Allred, P., Myronov, M, Huante-Ceron, Edgar, Lever, Leon J. M., Lever, L.J.M., Leadley, D.R., Knights, A.P., Knights, Andrew P., Allred, Phil, Ikonic, Z., Huante-Ceron, E., Warburton, RE, Knights, Andrew P, Pilgrim, N.J., Buller, G.S., Intermite, G, Paul, Douglas J, Warburton, Ryan E., Leadley, DR, Intermite, Giuseppe, Gallacher, K, Warburton, R.E., Buller, G. S. (Gerald S.), Kelsall, Robert W, Buller, Gerald Stuart   +48 more
core   +1 more source

Advanced Neuroimaging With Photon-Counting Detector CT

, 2023
Photon-counting detector computed tomography (PCD-CT) is an emerging technology and promises the next step in CT evolution. Photon-counting detectors count the number of individual incoming photons and assess the energy level of each of them.
Schubert, Tilman; https://orcid.org/, Winklhofer, Sebastian; https://orcid.org/, Abel, Frederik   +2 more
core   +1 more source

Improved visualization of the bone-implant interface and osseointegration in ex vivo acetabular cup implants using photon-counting detector CT

European Radiology Experimental, 2023
Background Successful osseointegration of joint replacement implants is required for long-term implant survival. Accurate assessment of osseointegration could enable clinical discrimination of failed implants from other sources of pain avoiding ...
Mischa Woisetschläger, Ronald Booij, Erik Tesselaar, Edwin H. G. Oei, Jörg Schilcher   +4 more
doaj   +1 more source