Filters
Results 1 - 10 of 1211
Results 1 - 10 of 1211.
Search took: 0.025 seconds
Sort by: date | relevance |
AbstractAbstract
[en] Two kinds of L-glutamine (Reanal-Hungary, Fluka-Switzerland) were applied in the spectrophotometric of gamma dosimetry. Fluka L-glutamine was applied as dosimeter of 10 MeV electron beam radiation. Two formulas were obtained for both glutamine for gamma radiation doses ranging from 0.76 kGy to 9.84 kGy. Another formula can be used in electron beam dosimetry for Fluka glutamine in doses ranging from 1.13 to 12.84 kGy. It has been shown it is necessary to calibrate a new kind of L-glutamine dosimeters each time. (author). 3 refs, 3 figs, 3 tabs
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Oliver, L.D.; Xuereb, E.M.A.; Last, V.; Hunt, P.B.; Wilfert, A.
Engineering and physics in medicine, Queenstown, New Zealand : conference programme, 20-24 November 1995 : annual joint conference of Australasian College of Physical Scientists and Engineers in Medicine and College of Biomedical Engineers, IEAust and 3rd Asia/Pacific Regional Conference of the IEEE Engineering in Medicine and Biology Society1996
Engineering and physics in medicine, Queenstown, New Zealand : conference programme, 20-24 November 1995 : annual joint conference of Australasian College of Physical Scientists and Engineers in Medicine and College of Biomedical Engineers, IEAust and 3rd Asia/Pacific Regional Conference of the IEEE Engineering in Medicine and Biology Society1996
AbstractAbstract
[en] Our (Royal North Shore Hospital) most recent linear accelerator acquisition is a Varian Clinac 2100C/D which has a high dose rate (approximately 25Gy per minute at 1 metre) total body electron option. We investigated the physical characteristics of the electron beam to develop a suitable method of treatment for total body electron therapy. The useful electron beam width is defined as 80cm above and below the reference height. Measurements of the electron dose received from the two angled electron beams showed a critical dependence on the gantry angles. The treatment protocol uses ten different patient angles, fractionated into directly opposing fields and treated seuqentially each day. A full cycle of treatment is completed in five days. (author)
Primary Subject
Source
Australasian College of Physical Scientists and Engineers in Medicine (Australia); Institution of Engineers (Australia). College of Biomedical Engineers; IEEE Engineering in Medicine and Biology Society (Australia); 244 p; 1996; p. 160; Conference Committee; Christchurch (New Zealand); Joint Conference of Australasian College of Physical Scientists and Engineers in Medicine and College of Biomedical Engineers, IEAust; Queenstown (New Zealand); 20-24 Nov 1995; 3. IEEE Engineering in Medicine and Biology Society. Asia/Pacific Regional Conference; Queenstown (New Zealand); 20-24 Nov 1995
Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A parallel plate ionization chamber for electron dosimetry was developed and tested in relation to the metrological characteristics: short and medium-term stabilities, leakage current and response to electron beams with 13 MeV. The obtained results show that they are within the international limits recommended for a secondary standard chamber. (author)
Original Title
Uma camara de ionizacao de placas paralelas para dosimetria de feixes de eletrons
Source
12. Brazilian Congress on Biomedical Engineering and 5. Latin American Conference on Medical Physics and 2. Workshop on Medical Physics and 1. Workshop of Physics in Medicine and Biomedical Engineering; 12. Congresso Brasileiro de Engenharia Biomedica; Ribeirao Preto, SP (Brazil); 7-11 Oct 1990
Record Type
Journal Article
Literature Type
Conference
Journal
RBE. Revista Brasileira de Engenharia. Caderno de Engenharia Biomedica; ISSN 0102-2644;
; v. 7(1); p. 448-453

Country of publication
LanguageLanguage
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Helt-Hansen, Jakob; Miller, Arne; Sharpe, Peter; Laurell, Bengt; Weiss, Doug; Pageau, Gary, E-mail: armi@risoe.dtu.dk2010
AbstractAbstract
[en] Irradiation with low-energy electrons (100-300 keV) results in dose gradients across the thickness of the dosimeters that are typically used for dose measurement at these energies. This leads to different doses being measured with different thickness dosimeters irradiated at the same electron beam, resulting in difficulties in providing traceable dose measurements using reference dosimeters. In order to overcome these problems a new concept is introduced of correcting all measured doses to the average dose in the first micrometer-Dμ. We have applied this concept to dose measurements with dosimeters of different thickness at two electron accelerators operating over a range of energies. The uncertainties of the dose measurements were evaluated, and it was shown that the dose in terms of Dμ was the same at each energy for all dosimeters within the measurement uncertainty. Using the concept of Dμ it is therefore possible to calibrate and measure doses from low-energy electron irradiations with measurement traceability to national standards.
Primary Subject
Source
S0969-806X(09)00490-3; Available from http://dx.doi.org/10.1016/j.radphyschem.2009.09.002; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Short communication. 3 refs
Source
Institute of Nuclear Chemistry and Technology, Warsaw (Poland); 128 p; 1993; p. 98-99; Institute of Nuclear Chemistry and Technology; Warsaw (Poland)
Record Type
Miscellaneous
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] For radiation processing of matter or sterilization of medical product, it is extremely important that proper dosimetry be performed using calibrated dosimeters and internationally accepted procedures. A good and reliable electron beam dosimetry system, together with the measuring procedure, has been established with the commissioning of the electron beam irradiator, ALURTRON at MINT. An experience of good process dosimetry as part of the overall process at the ALURTRON irradiator is described
Primary Subject
Source
2000; 9 p; Malaysian Institute for Nuclear Technology Research, MINT; Bangi (Malaysia); Seminar Research and Development 2000 MINT; Bangi (Malaysia); 17-19 Oct 2000
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Noriah Mod Ali
Funding organisation: Ministry of Science, Technology and Environment, Kuala Lumpur (Malaysia). IRPA Committee
Compilation of research papers 19941995
Funding organisation: Ministry of Science, Technology and Environment, Kuala Lumpur (Malaysia). IRPA Committee
Compilation of research papers 19941995
AbstractAbstract
[en] A good and reliable dosimetry system together with their measuring procedure had been established for applications at an electron beam facilities at MINT. Work had been focussed on the verification of the performance of the total absorption calorimeter, which is accepted as a reference measuring system for the standardization programme of the medium energy electron beam facility (up to 3 MeV). The key element of the programme is the establishment of a relationship between the standardised beam to the routine technique which is employed to verify the beam parameter. Through this programme, the irradiation beams can be checked frequently and adoption of such programme is expected to be a core element to ensure for be proper and effective use of radiation measurements for irradiation processes using medium energy electron beams
Primary Subject
Source
Malaysian Inst. for Nuclear Technology Research, Bangi, Selangor (Malaysia); 671 p; 1995; p. 181-190
Record Type
Miscellaneous
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
Plaschnick, D.; Knabe, G.; Ihme, B.; Dorschner, H.; Heger, A.
VEB Filmfabrik Wolfen (German Democratic Republic)1986
VEB Filmfabrik Wolfen (German Democratic Republic)1986
AbstractAbstract
[en] This invention comprises a procedure for the dosimetry of ionizing radiation fields by means of analytic materials on the basis of polyethyleneterephthalate (PETP) foils which can be used also for the time domain < 24 h after irradiation. It was found that a immediate constancy of measured values (alterations of transmission) can be obtained by tempering the irradiated foils (temperatures between 80 0C and 125 0C, time up to 30 min)
Original Title
Verfahren zur Dosimetrie ionisierender Strahlungsfelder
Source
29 Oct 1986; 23 Aug 1985; 4 p; DD PATENT DOCUMENT 240448/A/; ?: 23 Aug 1985
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Short communication. 1 fig
Primary Subject
Source
Institute of Nuclear Chemistry and Technology, Warsaw (Poland); 118 p; 1994; p. 77-78; Institute of Nuclear Chemistry and Technology; Warsaw (Poland)
Record Type
Miscellaneous
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
Kocher, D.C.
Oak Ridge National Lab., TN (USA)1986
Oak Ridge National Lab., TN (USA)1986
AbstractAbstract
[en] This paper discusses a relatively simple calculational method, called the point kernel method (Fo68), for estimating external dose from distributed sources that emit photon or electron radiations. The principles of the point kernel method are emphasized, rather than the presentation of extensive sets of calculations or tables of numerical results. A few calculations are presented for simple source geometries as illustrations of the method, and references and descriptions are provided for other caluclations in the literature. This paper also describes exposure situations for which the point kernel method is not appropriate and other, more complex, methods must be used, but these methods are not discussed in any detail
Primary Subject
Source
1986; 30 p; Health Physics Society meeting; Pittsburgh, PA (USA); 30 Jun 1986; Available from NTIS, PC A03/MF A01; 1 as DE86012617; Portions of this document are illegible in microfiche products.
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |