Linked Life Data

2363107

Source:http://linkedlifedata.com/resource/pubmed/id/2363107

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1990-8-8
pubmed:abstractText
The modification of the absorbed dose distribution due to the presence of inhomogeneities in the human body requires thorough research within the scope of radiation treatment planning for tumour therapy with fast neutrons. In this work the effect of air and lung cavities and the depth dose distribution in the near and distant vicinity of the inhomogeneity is studied. By means of thermoluminescence detectors TLD-300 the total absorbed dose is measured in mixed neutron-photon radiation fields in the used polystyrene phantom with embedded inhomogeneity. Lung tissue is simulated by cork. Differences in the concentration of hydrogen between inhomogeneity and surrounding soft tissue lead to new build-up effects. These cause an increase behind and a decrease of the total dose beside and in front of the inhomogeneity. In case of the cork inhomogeneity an absorbed dose increase of maximally 20% in comparison to the absorbed dose in the homogeneous phantom was found. With air as inhomogeneity the increase of absorbed dose reaches a maximum of 30% compared to the homogeneous phantom.
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0179-7158
pubmed:author
pubmed:issnType
Print
pubmed:volume
166
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
435-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
[Neutron dosimetry in a model of the body's inhomogeneities using the TLD-300 detector].
pubmed:affiliation
Institut für Medizinische Strahlenphysik, Universitätsklinikum, Essen.
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't