Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Joseph Fryar"'
Autor:
Charles Markham, Joseph Fryar
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 324:383-388
A new technique for element specific imaging in computerised tomography has been developed. The technique allows two or more elements to be imaged independently of the matrix in which they are contained. The technique uses a filtered tube source of X
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd629fc64a1f4c15d56e8778a0ed025
https://doi.org/10.1016/0168-9002(93)90999-x
https://doi.org/10.1016/0168-9002(93)90999-x
Autor:
Joseph Fryar, Kieran J. McCarthy
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 287:613-618
Two basic methods are available for the imaging of elements in CT using synchrotron or other monochromatic radiation. By switching the energy of the X-ray beam across an absorption edge, images can be produced whether or not the analyte can be added
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df6db6fc3ee0f2b08cdf5ead969aeaf4
https://doi.org/10.1016/0168-9002(90)91586-z
https://doi.org/10.1016/0168-9002(90)91586-z
Publikováno v:
SPIE Proceedings.
A phantom. having similar dimensions to a heart in the human thorax, has been used to determine the sensitivity of X-ray CT scanning for the imaging of contrast agents within the myocardiuin. A theoretical determination of sensitivity has been made f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e17936c1678d1734c8103ea61a5a7d33
https://doi.org/10.1117/12.18802
https://doi.org/10.1117/12.18802
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 259:557-565
Element specific CT images can be produced by scanning the specimen with two almost monochromatic X-ray beams the energies of which straddle an absorption edge of the element. Here we produce images of palladium and caesium within a specimen using X-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1a20c7f347271b678a25ca9c5ee1633
https://doi.org/10.1016/0168-9002(87)90840-0
https://doi.org/10.1016/0168-9002(87)90840-0
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 271:671-677
A method by which several elements can be independently imaged in a single X-ray CT scan is described. The method is based on measurements of differential absorption across absorption edges. The images produced show the distribution of element concen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1276258fa5502722f5b9fd4348c068f8
https://doi.org/10.1016/0168-9002(88)90338-5
https://doi.org/10.1016/0168-9002(88)90338-5