Linked Life Data

7986762

Source:http://linkedlifedata.com/resource/pubmed/id/7986762

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-1-12
pubmed:abstractText
A scanning megavoltage imaging detector, with associated image storage and analysis facilities has been developed. This produces images of the treatment portals in under 10 seconds, in a digital format, facilitating rapid, quantitative image analysis. Image quality is comparable to, and at some sites improves upon, that available from film. Clinical problems in the use of megavoltage imaging include limited field of view, loss of information at the field edge due to penumbra effects, degradation of the image by bowel gas, and difficulties in the detection of soft tissue-air interfaces. Possible solutions to these problems are discussed. The imaging system has been used to assess the random errors occurring during routine para-aortic nodal irradiation. The errors detected are small, with over 95% of set-ups lying within +/- 4.5 mm of the mean daily position. No differences were detected in the magnitude of random errors between anterior and posterior treatment fields.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0936-6555
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
245-50
pubmed:dateRevised
2008-3-10
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Preliminary clinical performance of a scanning detector for rapid portal imaging.
pubmed:affiliation
Department of Radiotherapy, Royal Marsden Hospital, Sutton, Surrey, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't