Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Frank A. DiBianca"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 573:398-409
High-energy (megavoltage) X-ray imaging is widely used in industry (e.g., aerospace, construction, material sciences) as well as in health care (radiation therapy). One of the fundamental problems with megavoltage imaging is poor contrast and spatial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b605b906e8a92baca8464243a06606c0
https://doi.org/10.1016/j.nima.2006.12.036
https://doi.org/10.1016/j.nima.2006.12.036
Autor:
Frank A. DiBianca, Roman Melnyk
Publikováno v:
Medical Physics. 34:1062-1075
The detector presampling modulation transfer function (MTF) of a 576-channel variable resolution x-ray (VRX) computed tomography (CT) scanner was evaluated in this study. The scanner employs a VRX detector, which provides increased spatial resolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b22d8ccdc0b50f9ebff7c97ed7038840
https://doi.org/10.1118/1.2436977
https://doi.org/10.1118/1.2436977
Theoretical analysis and experimental evaluation of a CsI(Tl) based electronic portal imaging system
Autor:
Herbert D. Zeman, Sanjiv S. Samant, Gunnar Lovhoiden, Amit Sawant, Frank A. DiBianca, Brent D. Weinberg
Publikováno v:
Medical Physics. 29:1042-1053
This article discusses the design and analysis of a portal imaging system based on a thick transparent scintillator. A theoretical analysis using Monte Carlo simulation was performed to calculate the x-ray quantum detection efficiency (QDE), signal t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::195fb477b38ca2a171509b145d183258
https://doi.org/10.1118/1.1477231
https://doi.org/10.1118/1.1477231
Autor:
Frank A. DiBianca, Joseph S. Laughter, Herbert D. Zeman, Ping Zou, J. Sebes, Lawrence M. Jordan
Publikováno v:
Medical Physics. 27:1875-1880
A computed tomography (CT) imaging technique called variable resolution x-ray (VRX) detection provides variable image resolution ranging from that of clinical body scanning (1 cy/mm) to that of microscopy (100 cy/mm). In this paper, an experimental V
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1df8edceef2357d8a8df0c0a0934ccc1
https://doi.org/10.1118/1.1285831
https://doi.org/10.1118/1.1285831
Publikováno v:
IEEE Transactions on Medical Imaging. 18:355-358
The authors investigated the use of the kinestatic charge detector (KCD) combined with the multilevel scheme algebraic reconstruction technique (MLS-ART) for X-ray computer tomography (CT) reconstruction. The KCD offers excellent detective quantum ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d583b346650a30fa2b0aeb8d184f2fd
https://doi.org/10.1109/42.768844
https://doi.org/10.1109/42.768844
Autor:
Senthilkumar Nagarajan, George C. Giakos, P. Ghotra, B. Pillai, Frank A. DiBianca, Robert J. Endorf, S. Chowdhury, Sreenivas Devidas, Lawrence M. Jordan
Publikováno v:
Journal of X-Ray Science and Technology. 6:188-204
The goal of this study is to develop high resolution imaging detectors with applications in digital radiography and computed tomography. A physical treatment aimed at a better understanding of the line-spread function response of kinestatic charge de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::646cd9a775fa38e3383426dfc2ab037c
https://doi.org/10.3233/xst-1996-6206
https://doi.org/10.3233/xst-1996-6206
Autor:
Azad Mahmud, Shashidhar Kollipara, Sreenivas Devidas, Herbert D. Zeman, Joseph S. Laughter, Robert J. Endorf, Douglas J. Wagenaar, Frank A. DiBianca, George C. Giakos, Senthilkumar Nagarajan
Publikováno v:
Journal of X-Ray Science and Technology. 5:181-201
The engineering aspects of a nine-channel digital radiographic system developed for bioimaging research, based on high gas pressure ionography and kinestatic principles, are presented. The research imaging system uses a pulsed x-ray beam which allows
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f8d38faf1a17b782b22fb0bc8636bde
https://doi.org/10.3233/xst-1995-5202
https://doi.org/10.3233/xst-1995-5202
Autor:
B. Pillai, Lawrence M. Jordan, George C. Giakos, Frank A. DiBianca, S. Chowdhury, Senthilkumar Nagarajan, Sreenivas Devidas, Srinivasan Vedantham, P. Ghotra, Robert J. Endorf
Publikováno v:
Journal of X-ray science and technology. 6(4)
A systematic study of the line spread function (LSF) in the drift direction of a high-pressure ionization chamber for x-ray detection and imaging is presented. Experimental results, obtained by operating a KCD krypton-filled detector at pressures up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cc40ddaab8f6ade8386d19b18171fe5
https://pubmed.ncbi.nlm.nih.gov/21307533
https://pubmed.ncbi.nlm.nih.gov/21307533
Autor:
Lawrence M. Jordan, Frank A. DiBianca
Publikováno v:
Journal of X-ray science and technology. 5(2)
Gas ionization x-ray detectors operating at pressures up to 100 atm offer inherently high spatial and contrast resolution. However, incorporating the detector x-ray entrance window in a conventional pressure vessel designed for such pressures can res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18a45d618adbd2a80c40b794ee6d2bc2
https://pubmed.ncbi.nlm.nih.gov/21307489
https://pubmed.ncbi.nlm.nih.gov/21307489
Publikováno v:
2009 First Annual ORNL Biomedical Science & Engineering Conference.
Variable Resolution X-ray (VRX) CT scanners allow imaging of different sized anatomy at the same proportional level of detail using the same device. For example, the same scanner can be used to image large animals such as dogs, and small ones, like m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76a66e1624032ef8cf54bcf7690a156b
https://doi.org/10.1109/bsec.2009.5090488
https://doi.org/10.1109/bsec.2009.5090488