Zobrazeno 1 - 10
of 22
pro vyhledávání: '"E C, McCullough"'
Autor:
C R, Blackwell, E C, McCullough
Publikováno v:
Medical physics. 19(1)
The same calibration grade ionization chamber and electrometer were sequentially sent to all five currently AAPM Accredited Dosimetry Calibration Laboratories (ADCL). A Cesium-137 based check device was utilized to ensure chamber and electrometer fac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::98e1a68c9f1dfd2f71b6c18ff01c395c
https://pubmed.ncbi.nlm.nih.gov/1620050
https://pubmed.ncbi.nlm.nih.gov/1620050
Publikováno v:
Medical physics. 17(1)
A quality assurance protocol has been developed to assess the relative accuracy of computerized monitor unit calculations. Results from this testing reveal that errors (defined as the difference between the computer results and those obtained using a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3f620e33cc58bd46cb40f9417c673059
https://pubmed.ncbi.nlm.nih.gov/2308540
https://pubmed.ncbi.nlm.nih.gov/2308540
Publikováno v:
Physics in Medicine and Biology. 19:831-842
A calorimeter has been used to measure the absorbed dose in tissue from a beam of fast neutrons. The calorimeter is of the twin type and is made of tissue-equivalent plastic. The calorimeter was calibrated electrically using the electrical resistivit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f623afb00ec2e820023450b9b7bd391
https://doi.org/10.1088/0031-9155/19/6/005
https://doi.org/10.1088/0031-9155/19/6/005
Autor:
J C Gore, E C McCullough
Publikováno v:
Physics in Medicine and Biology. 25:153-155
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e6ccccb3d87f633d01c88bc828f60c1
https://doi.org/10.1088/0031-9155/25/1/417
https://doi.org/10.1088/0031-9155/25/1/417
Publikováno v:
International journal of radiation oncology, biology, physics. 13(9)
In the setting of a large or irregularly shaped tumor, adjacent or intentionally overlapped intraoperative electron fields may be required to give adequate coverage of the intraoperative target volume. The matching of such intraoperative electron fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::85d86099c11c56c0ff2e430d5ddf6a4e
https://pubmed.ncbi.nlm.nih.gov/3114185
https://pubmed.ncbi.nlm.nih.gov/3114185
Autor:
E. C. McCullough, J. L. Beach
Publikováno v:
Medical physics. 2(4)
An inexpensive recoil-proton counter telescope has been designed for absolute fluence measurements of a gas-target neutron source for radiation therapy. The detector has an absolute efficiency of 1.1 times 10-minus 9 at 20 cm from an isotropic source
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44227238c673caf4db9e70a54f0b0e79
https://pubmed.ncbi.nlm.nih.gov/806776
https://pubmed.ncbi.nlm.nih.gov/806776
Publikováno v:
Medical physics. 15(4)
The depth dependence (up to 25 cm) of the in-phantom wedge transmission factor (WTF) has been determined for three medical linear accelerator x-ray beams with energies of 4, 6, and 10 MV containing 15 degrees-60 degrees (nominal) brass wedges. All me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::42f20ecc9fcf50c5f72369ff41f0c4fb
https://pubmed.ncbi.nlm.nih.gov/3211057
https://pubmed.ncbi.nlm.nih.gov/3211057
Autor:
J C, Gore, E C, McCullough
Publikováno v:
Physics in medicine and biology. 25(1)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::51a4dde793e8648a1a516fc9ddbedf96
https://pubmed.ncbi.nlm.nih.gov/7360789
https://pubmed.ncbi.nlm.nih.gov/7360789
Autor:
E C McCullough, J D Earle
Publikováno v:
Radiology. 144(2)
Dose distributions within the neck, resulting from equally weighted, parallel, opposed mantle fields, were measured using thermoluminescence dosimetry in using thermoluminescence dosimetry in an anthropomorphic phantom. Results show the similarity an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77c6752bb806895a4ad4896c92b14f92
https://pubmed.ncbi.nlm.nih.gov/6806854
https://pubmed.ncbi.nlm.nih.gov/6806854
Determination of accurate dosimetric parameters for beveled intraoperative electron beam applicators
Autor:
R A, Dahl, E C, McCullough
Publikováno v:
Medical physics. 16(1)
Intraoperative electron beam therapy requires accurate dose maximum/monitor unit (Dmax/MU) values for both flat and beveled ended applicators (cones). Measurement of Dmax/MU values with either solid or nontilting scanning water systems may give rise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::66f060a6587c8a2e0ff24b4a95f7045b
https://pubmed.ncbi.nlm.nih.gov/2921971
https://pubmed.ncbi.nlm.nih.gov/2921971