Linked Life Data

147838

Source:http://linkedlifedata.com/resource/pubmed/id/147838

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1978-6-12
pubmed:abstractText
Using calcium tungstate (CaWO4) and rare-earth intensitying screens, their relative speeds were compared in exposures of a pelvis phantom, and radiation doses were measured at several kilovoltages. Using a slit pattern, the resolving power was assessed by a modified contrast-frequency response and by direct viewing of the radiographs. In the comparison of the rare-earth and CaWO4 screens the following differences were found: (1) A great reduction in the radiation dose can be achieved by the use of the fast screen types, yet at the cost of some loss of resolving power; (2) the film contrast can be improved by a reduction in the kilovoltage without an increase in the radiation dose; (3) the short exposure times and the characteristic course of the dose curve necessitate an adjustment of the phototimer or a change of the control unit; and (4) with the slower screen type tested, the resolving power can be improved without increasing the radiation dose.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1438-9029
pubmed:author
pubmed:issnType
Print
pubmed:volume
128
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
358-63
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Rare-earth and calcium tungstate intensifying screens, a comparative study of relative speed, radiation doses and resolving power.
pubmed:publicationType
Journal Article