Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Paul C. Shrimpton"'
Publikováno v:
Physics in medicine and biology. 67(22)
Objective. Provide analyses of new organ dose coefficients (hereafter also referred to as normalized doses) for CT that have been developed to update the widely-utilized collection of data published 30 years ago in NRPB-SR250. Approach. In order to r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4af293e888dd8b3f9b8c650e2e2d6fda
https://pubmed.ncbi.nlm.nih.gov/36317285
https://pubmed.ncbi.nlm.nih.gov/36317285
Publikováno v:
Physics in Medicine & Biology. 68:035022
Objective. Development of a method to provide organ and effective dose coefficients to reference adults for any CT scanner based on values of CTDI measured both in air and in standard CT dosimetry phantoms. Approach. Results from previous Monte Carlo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d269a5993fe4e55a77506d80cdce4782
https://doi.org/10.1088/1361-6560/acb2a8
https://doi.org/10.1088/1361-6560/acb2a8
Autor:
Paul C. Shrimpton, Jan T M Jansen
Publikováno v:
Physics in medicine and biology. 61(14)
The ImPACT (imaging performance assessment of CT scanners) CT patient dosimetry calculator is still used world-wide to estimate organ and effective doses (E) for computed tomography (CT) examinations, although the tool is based on Monte Carlo calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::162d7d6a013828044451fefe4c1925c5
https://pubmed.ncbi.nlm.nih.gov/27362736
https://pubmed.ncbi.nlm.nih.gov/27362736
Publikováno v:
Medical Physics. 36:4881-4889
Purpose: Tube current modulation (TCM) is one of the recent developments in multislice CT that has proven to reduce the patient radiation dose without affecting the image quality. Presently established methods and published coefficients for estimatin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f737fa79bd8bea0a35e374689772b7a
https://doi.org/10.1118/1.3231948
https://doi.org/10.1118/1.3231948
Publikováno v:
The British Journal of Radiology. 75:819-830
Monte Carlo simulations of CT examinations have been performed to estimate effective doses, normalized to axial air kerma, for six mathematical phantoms representing ages from newborn to adult, and for three CT scanner models covering a range of desi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5646f14018696b19f014f91a8d010fec
https://doi.org/10.1259/bjr.75.898.750819
https://doi.org/10.1259/bjr.75.898.750819
Autor:
B.F. Wall, Paul C. Shrimpton
Publikováno v:
Radiation Protection Dosimetry. 90:249-252
Diagnostic reference levels appropriate to the peculiar conditions of exposure in CT have already been specified in relation to examinations on adult patients, utilising the dosimetric concepts of weighted computed tomography dose index (CTDI w ) per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e6d1931600c5f2dd3ee4bf2f5237e2d
https://doi.org/10.1093/oxfordjournals.rpd.a033130
https://doi.org/10.1093/oxfordjournals.rpd.a033130
Publikováno v:
Medical physics. 36(11)
Tube current modulation (TCM) is one of the recent developments in multislice CT that has proven to reduce the patient radiation dose without affecting the image quality. Presently established methods and published coefficients for estimating organ d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7b7989526625c4cab5298c184f5c9d76
https://pubmed.ncbi.nlm.nih.gov/19994496
https://pubmed.ncbi.nlm.nih.gov/19994496
Publikováno v:
The British journal of radiology. 79(948)
A review of patient doses from CT examinations in the UK for 2003 has been conducted on the basis of data received from over a quarter of all UK scanners, of which 37% had multislice capability. Questionnaires were employed to collect scan details bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::889b156e44e4b19921b2136e16b55682
https://pubmed.ncbi.nlm.nih.gov/17213302
https://pubmed.ncbi.nlm.nih.gov/17213302
Publikováno v:
Radiology. 250:604-605
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de8cbe2186f94772a404e1b57949d750
https://doi.org/10.1148/radiol.2502081340
https://doi.org/10.1148/radiol.2502081340
Publikováno v:
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 50(1)
The complex conditions of irradiation in computed tomography (CT), involving highly-collimated X-ray beams, necessitate the use of specially-defined dose descriptors such as the computed tomography dose index (CTDI). When used in a weighted form (CTD
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7de90be9df518331a6d3bb18533491c9
https://pubmed.ncbi.nlm.nih.gov/10028635
https://pubmed.ncbi.nlm.nih.gov/10028635