Linked Life Data

2315490

Source:http://linkedlifedata.com/resource/pubmed/id/2315490

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-4-25
pubmed:abstractText
In selective internal radiation (SIR) therapy of hepatic metastases, tumor vasculature is preferentially embolized with high-energy beta-emitting yttrium-90-labeled microspheres. To enable accurate estimation of the resultant absorbed radiation doses to tissues, an intraoperative beta detection probe is used to scan the liver surface. The validity of the response of this probe to Y-90 and its clinical application were assessed with a phantom containing varying activities and with biopsy samples obtained from patients being treated with SIR therapy. A linear relationship was found between the probe counts taken from the biopsy samples and the calculated tissue radiation doses from the specific activities of each sample. This relationship was repeated with probe counts determined against a water phantom containing various activities of Y-90. The probe was shown to respond minimally to bremsstrahlung. The use of the probe in measuring tissue radiation doses at laparotomy provides the opportunity to control dose administration during SIR therapy. In this way, subtherapeutic exposure of normal tissue can be assured while tumor tissue receives maximal radiation levels.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0033-8419
pubmed:author
pubmed:issnType
Print
pubmed:volume
175
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
253-5
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Selective internal radiation therapy: validation of intraoperative dosimetry.
pubmed:affiliation
Department of Surgery, University of Western Australia, Royal Perth Hospital.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't