Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Guy M. Besson"'
Autor:
Guy M. Besson
Publikováno v:
Medical Physics. 26:415-426
Third generation fan-beam computerized tomography(CT) scanners acquire data one entire projection at a time. The associated filtered-backprojection algorithm requires a computationally expensive pixel-dependent weight factor in the backprojector. Met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cf595e4dc077f7399a7302d60a7cd6d
https://doi.org/10.1118/1.598533
https://doi.org/10.1118/1.598533
Autor:
Kenneth E. Crocker, Guy M. Besson
Publikováno v:
SPIE Proceedings.
This paper describes a system for multi-spectral single-scan lung imaging. The proposed approach relies on a low noise detector sampled at a high rate. The proposed method overcomes limitations of CCD time-and-delay integration slot-scanning systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa8760838e9c3c072d0ebae563839181
https://doi.org/10.1117/12.652405
https://doi.org/10.1117/12.652405
Autor:
Mike Tesic, Bernard Munier, Pascal Prieur-Drevron, Roland Sottoriva, Emmanuel Calais, Guy M. Besson, Paul DeGroot, Andreas Koch
Publikováno v:
SPIE Proceedings.
The FDA has approved the SenoScan slot-scanning Full-field Digital Mammography system. A high power Tungsten-target x- ray tube enables breast imaging with 0.22 s effective exposure time. A 21-cm X 29-cm area is scanned in less than 6 seconds, at a t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea13f30f237276f26bf038b3a85cd0ea
https://doi.org/10.1117/12.465589
https://doi.org/10.1117/12.465589
Publikováno v:
Medical physics. 27(5)
This paper presents a calibration and correction method for detectorcell gain variations. A key functionality of current CTscanners is to offer variable slice thickness to the user. To provide this capability in multislice volumetric scanners, while
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe9d15942b1a8b04ab0e598d303046c7
https://pubmed.ncbi.nlm.nih.gov/10841389
https://pubmed.ncbi.nlm.nih.gov/10841389
Autor:
Guy M. Besson
Publikováno v:
SPIE Proceedings.
This paper introduces a new multislice helical weighting method. When used in conjunction with rebining from fan-beam to parallel projections, this approach leads to a single- filtering algorithm, that is, each projection needs to be filtered only on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d51a6373788c1153ae630f921ea0f395
https://doi.org/10.1117/12.384500
https://doi.org/10.1117/12.384500
Publikováno v:
Medical Imaging 1999: Physics of Medical Imaging.
This paper presents a calibration and correction method for detector cell gain variations. To provide variable slice thickness capability in multislice volumetric scanners, while minimizing costs, it is necessary to combine the signals from several d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::944a432e5b4cc36ce872865e38e9bbe8
https://doi.org/10.1117/12.349491
https://doi.org/10.1117/12.349491
Publikováno v:
Medical Imaging 1999: Physics of Medical Imaging.
This paper presents a modification of the z-slope algorithm introduced in the accompanying paper 'An algorithm to correct for z-detector gain variations in multislice volumetric CT.' The x-expansion coefficients found by SVD are plugged into the equa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::391920ce119d5a86ec5b6b65dda96c1f
https://doi.org/10.1117/12.349566
https://doi.org/10.1117/12.349566
Autor:
Guy M. Besson
Publikováno v:
Medical Imaging: Image Processing
In this paper, a straightforward method of estimating the CT projections is applied to simplified pre-processing, simplified reconstruction filtering, and to low-dose and local CT image reconstruction. The method relies on the projection- to-projecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::439a5b128d004406c6271519dbf58eab
https://doi.org/10.1117/12.348514
https://doi.org/10.1117/12.348514
Autor:
Guy M. Besson
Publikováno v:
SPIE Proceedings.
The focus of this paper is on CT helical weighting algorithms using one source rotation, or 2 pi, worth of projection data. Currently known 2 pi helical weighting algorithms include a fan-angle dependency, and do not lend themselves to fast reconstru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb9bb601ea5ec0e99d184a1a2ac8a5a7
https://doi.org/10.1117/12.317028
https://doi.org/10.1117/12.317028
Autor:
Guy M. Besson
Publikováno v:
Medical Imaging: Image Processing
A detection-estintation method is introduced for use in digital subtraction angiography (DSA) . The method allows three dimensional (3-D) reconstruction of the vasculature by an image intensifier-based volume irnager using few subtracted projections.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::255ebffaa7664d4758dfe0b87063ccf9
https://doi.org/10.1117/12.18928
https://doi.org/10.1117/12.18928