Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Giovanni DeCrescenzo"'
Autor:
Karim S. Karim, Giovanni DeCrescenzo, Alla Reznik, Oleksandr Bubon, Luc Laperriere, Jonathan Greenspan, Olivier Tousignant, Habib Mani, George Belev, Safa Kasap, Joel B. Frey, John A. Rowlands
Publikováno v:
Sensors, Vol 11, Iss 5, Pp 5112-5157 (2011)
In the last ten to fifteen years there has been much research in using amorphous and polycrystalline semiconductors as x-ray photoconductors in various x-ray image sensor applications, most notably in flat panel x-ray imagers (FPXIs). We first outlin
Externí odkaz:
https://doaj.org/article/a516dea15ff84ac383f740215512ccd7
Publikováno v:
Medical Physics. 39:7102-7109
Purpose: The authors are investigating the feasibility of a new type of solid-state x-ray imagingsensor with programmable avalanche gain: scintillator high-gain avalanche rushing photoconductor active matrix flat panel imager (SHARP-AMFPI). The purpo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::287d32734363405af5756f10d22c1264
https://doi.org/10.1118/1.4760989
https://doi.org/10.1118/1.4760989
Autor:
Wei Zhao, Kenji Kikuchi, Misao Kubota, Kenkichi Tanioka, Yuji Ohkawa, Alla Reznik, Kazunori Miyakawa, Oleksandr Bubon, John A. Rowlands, Giovanni DeCrescenzo, Tomoki Matsubara
Publikováno v:
Current Applied Physics. 12:983-988
Although avalanche amorphous selenium (a-Se) is a very promising photoconductor for a variety of imaging applications, it is currently restricted to applications with electron beam readout in vacuum pick-up tube called a High-gain Avalanche Rushing P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b29af303a597a0094ca973973726eaa
https://doi.org/10.1016/j.cap.2011.12.023
https://doi.org/10.1016/j.cap.2011.12.023
Autor:
Alla Reznik, Jonathan Greenspan, Luc Laperriere, Karim S. Karim, Habib Mani, Olivier Tousignant, Oleksandr Bubon, George Belev, John A. Rowlands, Joel B. Frey, Giovanni DeCrescenzo, Safa Kasap
Publikováno v:
Sensors, Vol 11, Iss 5, Pp 5112-5157 (2011)
Sensors (Basel, Switzerland)
Sensors (Basel, Switzerland)
In the last ten to fifteen years there has been much research in using amorphous and polycrystalline semiconductors as x-ray photoconductors in various x-ray image sensor applications, most notably in flat panel x-ray imagers (FPXIs). We first outlin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74286593b5ca88d616e1485796925d35
http://www.mdpi.com/1424-8220/11/5/5112/
http://www.mdpi.com/1424-8220/11/5/5112/
Autor:
Giovanni DeCrescenzo, Kenkichi Tanioka, Wei Zhao, John A. Rowlands, Matt Wronski, Alla Reznik
Publikováno v:
Medical Physics. 37:4982-4985
Purpose: The feasibility of a practical solid-state technology for low photon flux imaging applications was investigated. The technology is based on an amorphous selenium photoreceptor with a voltage-controlled avalanche multiplication gain. If this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a54a3f12fbfbfdc8f1cb83bd82bfe15
https://doi.org/10.1118/1.3483096
https://doi.org/10.1118/1.3483096
Autor:
L. Chowdhury, Olivier Tousignant, John A. Rowlands, M. Z. Kabir, Giovanni DeCrescenzo, Safa Kasap
Publikováno v:
Medical Physics. 37:1339-1349
Purpose: A numerical model and the experimental methods to study the x-ray exposure dependent change in the modulation transfer function (MTF) of amorphous selenium (a-Se) based active matrix flat panel imagers (AMFPIs) are described. The physical me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46a985744d463239bbc5b90f44b1328a
https://doi.org/10.1118/1.3326947
https://doi.org/10.1118/1.3326947
Autor:
John Bracken, Philip T. Komljenovic, Rebecca Fahrig, Giovanni DeCrescenzo, Prasheel Lillaney, John A. Rowlands
Publikováno v:
Medical Physics. 36:1717-1726
Hybrid closed bore x-ray/MRI systems are being developed to improve the safety and efficacy of percutaneous aortic valve replacement procedures by harnessing the complementary strengths of the x-ray and MRI modalities in a single interventional suite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb3897d0b283017957755ef61754894a
https://doi.org/10.1118/1.3116363
https://doi.org/10.1118/1.3116363
Autor:
Vladimir Verpakhovski, Gueorgi Belev, James G. Mainprize, Shi Yin, Martin J. Yaffe, John A. Rowlands, Giovanni DeCrescenzo, Tumay O. Tumer, Charles Smith, David M. Hunter, Safa Kasap
Publikováno v:
Medical Physics. 34:3358-3373
Blocking layers are used to reduce leakage current in amorphous selenium detectors. The effect of the thickness of the blocking layer on the presampling modulation transfer function (MTF) and on dark current was experimentally determined in prototype
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f41dd704283ce5cf0dda38b0f1395b9e
https://doi.org/10.1118/1.2757002
https://doi.org/10.1118/1.2757002
Publikováno v:
Journal of Non-Crystalline Solids. 358:2431-2433
Avalanche amorphous selenium (a-Se) photosensors have to withstand high electric field required for avalanche multiplication without degradation and dielectric breakdown. However, it is a technological challenge to avoid possible dielectric breakdown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc36d8f89ca345f31b214c3d5b8226b0
https://doi.org/10.1016/j.jnoncrysol.2011.12.093
https://doi.org/10.1016/j.jnoncrysol.2011.12.093
Publikováno v:
Medical Physics. 19:1065-1069
There is a renewed interest in the application of photoconductors especially amorphous selenium (a-Se) to x-ray imaging. A new method for evaluating W +/-, the energy absorption necessary to release an electron-hole pair in a-Se is described. All pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c12b745f79929836ca2279554e079b62
https://doi.org/10.1118/1.596825
https://doi.org/10.1118/1.596825