Linked Life Data

1921876

Source:http://linkedlifedata.com/resource/pubmed/id/1921876

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1991-11-21
pubmed:abstractText
The Batho power-law formula is in common use in many treatment planning systems to correct for the presence of lungs and other inhomogeneities. While giving excellent agreement with measurement for Cobalt-60 radiation, it tends to underestimate the lung correction required for higher energy x rays and is undefined for distances beyond an interface less than the buildup distance. This paper suggests a simple modification that greatly improves the agreement with measured data and gives a continuously defined function at all depths. Measurements have been made in a polystyrene and cork phantom to simulate the effects of lung; data are presented for beams of 8-MV x rays, 16-MV x rays, and Cobalt-60 gamma rays.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0094-2405
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
719-23
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:articleTitle
A modified power-law formula for inhomogeneity corrections in beams of high-energy x rays.
pubmed:affiliation
Medical Physics Department, Addenbrooke's Hospital, Cambridge, United Kingdom.
pubmed:publicationType
Journal Article