Linked Life Data

12522346

Source:http://linkedlifedata.com/resource/pubmed/id/12522346

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2003-1-10
pubmed:abstractText
When the absorbed dose conversion factor of the x-rays is looked for, generally it is being done how to measure the effective energy (keV) from the half-value layer. But, spectrum measurement is necessary to evaluate quality of x-ray precisely. So, 2.94% of the maximum differences were in the water, soft tissue, and 20.93% of the maximum differences were in search of absorbed dose conversion factor due to the half-value layer and the spectrum as a compared result by cortical bone. And, when a x-ray tube voltage rose, this difference showed a tendency of spreading out. A cause was because the rates of the photon of the higher energy than the energy measured with effective energy increased by a x-ray tube voltage's rising. The ratio of the mass energy absorption coefficient which faces air like cortical bone should be careful because an error by the absorbed dose conversion factor grows big when a absorbed dose conversion factor is measured by the big absorption medium, though it is as the difference in absorbed dose conversion factor is compared with an error by the dosimeter and there is no problem in the water, soft tissue.
pubmed:language
jpn
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0369-4305
pubmed:author
pubmed:issnType
Print
pubmed:volume
58
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
383-9
pubmed:dateRevised
2011-7-28
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
[An absorbed dose conversion factor due to the x-ray spectrum compare with the method by the half-value layer].
pubmed:affiliation
Department of Radiological Technology, Kyushu University Hospital.
pubmed:publicationType
Journal Article, Comparative Study, English Abstract