Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Robert K. Cacak"'
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Millimeter wavelength thermographic scanner
Autor: William R. Hendee, Jochen Edrich, Daniel E. Winans, Robert K. Cacak
Publikováno v: Medical Physics. 8:462-465
Two new types of thermographic instruments sensitive to millimeter-wave electromagnetic radiation have been designed, constructed, and tested. These instruments utilize wavelengths that are three orders of magnitude longer and much more penetrating t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53890346dc43ee5f4ba3abbd6f97b89e
https://doi.org/10.1118/1.594991
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4
Ionization produced by electron beams beneath curved surfaces
Autor: Robert K. Cacak, E. R. Ritenour, William R. Hendee
Publikováno v: Medical Physics. 10:669-671
Ionization produced by high-energy (6--18 MeV) electrons beneath cylindrical surfaces has been measured and compared to ionization at corresponding locations under a flat surface. Results are reported as ionization ratios over a range of depths, off-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d12c3016ee8560bd142459c4c1279b29
https://doi.org/10.1118/1.595334
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5
Backscatter factors in the mammographic energy range
Autor: Gregory L. Dubuque, Robert K. Cacak, William R. Hendee
Publikováno v: Medical Physics. 4:397-399
Backscatter factors for kVps and half‐value layers typical of mammographic beams have been determined as a function of beam diameter and half‐value layer. The method utilized thin TLD‐100 chips with the scattering medium alternately present and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e165cc4f8d0fee756ca4bd06e4f1b95
https://doi.org/10.1118/1.594312
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6
Performance Evaluation Of A Fourth-Generation Computed Tomography (CT) Scanner
Autor: Robert K. Cacak, William R. Hendee
Publikováno v: Application of Optical Instrumentation in Medicine VII.
One of the first American Science and Engineering Co. (AS&E) CT scanners installed in a clinical environment is operational at the University of Colorado Medical Center. The performance characteristics of several aspects of this stationary detector a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9673479dacae0c11df17bc499380aee0
https://doi.org/10.1117/12.957143
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7
Radiation therapy dosimetry reviews by the Centers for Radiological Physics
Autor: Daniel W. Miller, Gregory Courlas, Leroy J. Humphries, Robert K. Cacak, Douglas Jones, Robert Hilko, L. A. DeWerd, Mary E. Masterson, Thaddeus Samulski, Gregory L. Dubuque, John F. Wochos, Marilyn Stovall
Publikováno v: International journal of radiation oncology, biology, physics. 7(3)
Six Centers for Radiological Physics (CRP) have performed over 250 dosimetric site reviews at institutions participating in the Division of Cancer Control and Rehabilitation therapy networks and/or as affiliates in Oncology Group Clinical trials. For
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76d0e738340d86d7a37895e2bd0cb061
https://pubmed.ncbi.nlm.nih.gov/7275715
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8
Multisegmented ion chamber for CT scanner dosimetry
Autor: Marleen M. Moore, William R. Hendee, Robert K. Cacak
Publikováno v: Medical physics. 8(5)
A multisegmented, ionization chamber capable of determining dosimetric profiles from a CT scanner has been developed and tested. The chamber consists of a number of 2 mm wide electrically isolated segments from which ionization currents may be measur
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::703f5147b98d703888177f39d104093d
https://pubmed.ncbi.nlm.nih.gov/7290016
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