| Uncertainties in dosimetric data and beam calibration. | |
| | |
MedLine Citation:
|
PMID: 2254119 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Recent studies indicate that the calibration of therapeutic beams is one of the main sources of uncertainty in the mean absorbed dose to the target volume in radiotherapy. Interaction coefficients and data used through the different steps in the calibration are pointed out as the main contribution to this uncertainty. Procedures used to select dosimetric data, that is, input parameters used in the specification of the quality of the beam, cause another contribution. In this paper the actual status of the data used for the dosimetry of photon and electron beams is introduced first. Uncertainties along the dosimetric chain are analyzed according to the procedure and data used in recent publications. Uncertainties in stopping-power ratios, considered the main contribution, are discussed in detail starting from the basic electron stopping-power data. Overall uncertainties in the presently available set of stopping-power ratios are analyzed. Recent developments in the dosimetry of electron beams, related to the effect of energy and angular spread and electron and photon contamination, are discussed in connection with the procedure to select stopping-power ratios for clinical dosimetry. Uncertainties along the dosimetric chain are evaluated in terms of the present knowledge of error sources. |
| | |
Authors:
|
P Andreo |
Related Documents
:
|
15157189 - Fib-induced damage in silicon. 8884899 - Photon beams for radiosurgery produced by laser compton backscattering from relativisti... 18851439 - Measurement of neutrino oscillations with the minos detectors in the numi beam. 19044409 - A line-of-sight electron cyclotron emission receiver for electron cyclotron resonance h... 732779 - Determination of effective energies in ct calibration. 16486869 - Positive cross correlations in a normal-conducting fermionic beam splitter. 22835039 - Luminescence and energy transfer in lu(3)al(5)o(12) scintillators co-doped with ce(3+) ... 22317029 - The usability of a product can be an ally of sustainability. 22872129 - From aromaticity to self-organized criticality in graphene. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: International journal of radiation oncology, biology, physics Volume: 19 ISSN: 0360-3016 ISO Abbreviation: Int. J. Radiat. Oncol. Biol. Phys. Publication Date: 1990 Nov |
Date Detail:
|
Created Date: 1991-01-18 Completed Date: 1991-01-18 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 7603616 Medline TA: Int J Radiat Oncol Biol Phys Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1233-47 Citation Subset: IM |
Affiliation:
|
Department of Radiation Physics, Karolinska Institute, Stockholm, Sweden. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Calibration
/
standards Europe Humans Radiometry / standards Radiotherapy Dosage / standards* Technology, Radiologic / standards |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Late tissue reactions after single-fraction sequential half-body irradiation (HBI) in patients with ...
Next Document: Supporting cancer care in the developing countries: role of IAEA/WHO.