Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Richard L. Van Metter"'
Autor:
Richard L. Van Metter
Publikováno v:
Medical Physics. 19:53-58
The measurement of modulation transfer function for radiographic screen-film systems depends critically upon a proper linearization of the measured line spread function. This is normally done by photographic photometry (i.e., using the measured densi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87961f3290f88c197552e975fb73369b
https://doi.org/10.1118/1.596892
https://doi.org/10.1118/1.596892
Autor:
Richard L. Van Metter, Robert S. Knox
Publikováno v:
Ciba Foundation Symposium 61-Chlorophyll Organization and Energy Transfer in Photosynthesis
To the extent that extracted light-harvesting chlorophyll proteins (LHCPs) retain the chlorophyll configuration which they had in vivo, information on the optical properties of LHCPs is useful for an assessment of the transfer process of the primary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1e69aff01e61b8ac237ca91a556b3f6
https://doi.org/10.1002/9780470720431.ch9
https://doi.org/10.1002/9780470720431.ch9
Autor:
Majid Rabbani, Richard L. Van Metter
Publikováno v:
Medical Physics. 17:65-71
Previous studies [J. Opt. Soc. Am. 4A 895-901 (1987)] have shown the utility of multivariate moment-generating functions for analyzing the influence of stochastic amplifying and scattering mechanisms on the transfer of signal and noise through multis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcf2ef1019654a5301e6d3ae0c65ecbb
https://doi.org/10.1118/1.596529
https://doi.org/10.1118/1.596529
Publikováno v:
SPIE Proceedings.
As digital radiography (DR) systems are being increasingly adopted for clinical applications, automatic exposure control (AEC) has remained a critically important component. Unlike traditional screen/film systems, however, there does not currently ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d132ce2da78569eb4cc5550c38d5fe54
https://doi.org/10.1117/12.714377
https://doi.org/10.1117/12.714377
Publikováno v:
SPIE Proceedings.
Software scoring approaches provide an attractive alternative to human evaluation of CDMAM images from digital mammography systems, particularly for annual quality control testing as recommended by the European Protocol for the Quality Control of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00bb9ac18f8ccd3c45e9a07505636625
https://doi.org/10.1117/12.713655
https://doi.org/10.1117/12.713655
Publikováno v:
SPIE Proceedings.
The need to assure the image quality of digital systems for mammography screening applications is now widely recognized. One approach is embodied in Part B of the European Protocol for the Quality Control of the Physical and Technical Aspects of Mamm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a248317365227782a7ee927609c6612
https://doi.org/10.1117/12.650141
https://doi.org/10.1117/12.650141
Autor:
J. Yorkston, Richard L. Van Metter
Publikováno v:
SPIE Proceedings.
Digital radiographs are currently characterized in terms of a variety of incompatible, vendor-specific dose metrics, which make it difficult for users to monitor receptor dose. AAPM Task Group #116 has been formed to "Standardize an Image Receptor Do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f818b7c935ea81ce935e353bf14ad73
https://doi.org/10.1117/12.650136
https://doi.org/10.1117/12.650136
Autor:
C. Riedel, Hendrik Bolte, Tobias Gottwald, Martin Heller, Juergen Biederer, S. Freitag, Richard L. Van Metter
Publikováno v:
European radiology. 17(4)
To evaluate increased image latitude post-processing of digital projection radiograms for the detection of pulmonary nodules. 20 porcine lungs were inflated inside a chest phantom, prepared with 280 solid nodules of 4-8 mm in diameter and examined wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70891f1f1ca9c7b651fc7bc7119ae460
https://pubmed.ncbi.nlm.nih.gov/16964489
https://pubmed.ncbi.nlm.nih.gov/16964489
Publikováno v:
Medical Imaging 2005: Physics of Medical Imaging.
The growing importance of the “European Protocol for the Quality Control of the Physical and Technical Aspects of Mammography Screening, Part B: Digital Mammography” dictates the need to understand the prescribed threshold contrast sensitivity te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cc6ce9ed9acfd6c99f5d99c7055e1a2
https://doi.org/10.1117/12.595510
https://doi.org/10.1117/12.595510
Autor:
J. Yorkston, Richard L. Van Metter
Publikováno v:
Medical Imaging 2005: Physics of Medical Imaging.
A variety of incompatible speed metrics for digitally acquired projection images are currently provided by system vendors. As digital acquisition has become more widely adopted, the need for a universal vendor-independent speed metric is increasingly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d2bd980093b2f1368a4dc5bb57654a8
https://doi.org/10.1117/12.595606
https://doi.org/10.1117/12.595606