Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Sean M. Hames"'
Publikováno v:
IEEE Transactions on Nuclear Science. 43:2320-2325
Digital X-ray imaging detectors designed for soft X-rays (1 to 50 keV) are significant for medical mammography, dental radiography, microradiography, and microtomography. Detector designs involve either direct absorption of X-rays in solid state devi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f937e0933ef7ab95fe5de81655b87ade
https://doi.org/10.1109/23.531897
https://doi.org/10.1109/23.531897
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 353:312-315
An analytic model for the performance of cone beam microtomography is described. The maximum power of a microfocus X-ray source is assumed to be approximately proportional to the focal spot size. Radiation flux penetrating the specimen is predicted b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a43c3da1480298e77938ca193915796c
https://doi.org/10.1016/0168-9002(94)91664-0
https://doi.org/10.1016/0168-9002(94)91664-0
Publikováno v:
1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference.
The authors have previously used volumetric computed tomography for imaging bone specimens with approximately 50 micrometer resolution. Three dimensional measurement methods which can determine bone density to within one percent for detail as small a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::653f1d67f5837dccccee25fb82147287
https://doi.org/10.1109/nssmic.1993.373617
https://doi.org/10.1109/nssmic.1993.373617
Publikováno v:
IEEE Conference on Nuclear Science Symposium and Medical Imaging.
A method using high-magnification, high-resolution, digital radiographs of a precise edge to obtain quantitative estimates of focal spot dimensions has been developed. The X-ray intensity distribution is determined from the edge response. The method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::466f3ffd023a30d45abdb344eefad349
https://doi.org/10.1109/nssmic.1992.301528
https://doi.org/10.1109/nssmic.1992.301528
Autor:
James T. Dobbins III, Sean M. Hames, Bruce H. Hasegawa, Timothy R. DeGrado, James A. Zagzebski, Richard Frayne
Publikováno v:
The Measurement, Instrumentation and Sensors Handbook on CD-ROM ISBN: 9780849383472
Measurement, Instrumentation, and Sensors Handbook ISBN: 9781315217444
Measurement, Instrumentation, and Sensors Handbook ISBN: 9781315217444
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63e2efad098d2983bba79c719bdc1312
https://doi.org/10.1201/9780415876179.ch79
https://doi.org/10.1201/9780415876179.ch79
Publikováno v:
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 48(10-12)
A system for 3D cone beam computed tomography has been developed, consisting of a microfocus x-ray source and x-ray image intensifier coupled to a CCD camera. Full width at half maximum resolving power has been experimentally measured to be 70 μm wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1efed165fe001e72afc3870bf1ef1179
https://pubmed.ncbi.nlm.nih.gov/9463869
https://pubmed.ncbi.nlm.nih.gov/9463869
Effect of direct x-ray interaction in the photodetector on image noise for a CCD/scintillator system
Publikováno v:
Medical Imaging 1996: Physics of Medical Imaging.
Digital x-ray imaging detectors for soft x-rays (1 to 50 keV) are significant for medical mammography, dental radiography, microradiography, x-ray diffraction, and x-ray telescope applications. For systems in which a scintillator is optically coupled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fc71929938148f341067361c8930f25
https://doi.org/10.1117/12.237775
https://doi.org/10.1117/12.237775
Publikováno v:
SPIE Proceedings.
Point projection microradiography has established value for imaging large, wet, opaque, and intact specimens in 2D projection views. We have developed a 3D microtomography system by combining the principles of microradiography with computed tomograph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90016d5a4b81338c3ea5bc87db6e71f5
https://doi.org/10.1117/12.205338
https://doi.org/10.1117/12.205338
Publikováno v:
SPIE Proceedings.
X-ray microcomputed tomograms with resolution of 50 microns or better have been obtained at several research centers by using either synchrotron or microfocus x-ray sources. Full 3D reconstructions have been obtained in these laboratories on specimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f14bf8310c9cece10bcc96fd8bd8fd36
https://doi.org/10.1117/12.174256
https://doi.org/10.1117/12.174256
Publikováno v:
Proceedings of 1994 IEEE Nuclear Science Symposium - NSS'94.
The resolution of 2D imaging systems is frequently described by experimental estimates of the point, line, or edge spread function. It is shown that a response function across the normal to a boundary between two homogeneous volumes can provide a mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1b46976f402b5fccd9b2640d1a2f2a4
https://doi.org/10.1109/nssmic.1994.474718
https://doi.org/10.1109/nssmic.1994.474718