Linked Life Data

16625027

Source:http://linkedlifedata.com/resource/pubmed/id/16625027

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2006-4-20
pubmed:abstractText
In proton and ion radiotherapy, the range of particles is calculated from x-ray computed tomography (CT) numbers. Due to the strong absorption of x-rays in a metal and a cut-off for large Hounsfield units (HU) in the software of most CT-scanners, a range calculation in metals cannot be based on the measured HU. This is of special importance when metal implants such as gold fillings or hip prostheses are close to the treatment volume. In order to overcome this problem in treatment planning for heavy charged particles, the correct ranges of ions in the metal relative to water have to be assigned in the CT data. Measurements and calculations of carbon ion ranges in various metals are presented that can be used in treatment planning to allow for a more accurate range calculation of carbon ion beams in titanium, steel, tungsten and gold. The suggested values for the relative water-equivalent range and their uncertainties are 3.13 (+/-3%) for titanium, 5.59 (+/-3%) for stainless steel and 10.25 (+/-4%) for gold.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0031-9155
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
51
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
N173-7
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Ranges of ions in metals for use in particle treatment planning.
pubmed:affiliation
Division for Medical Physics in Radiotherapy (E040), German Cancer Research Center, INF 280, 69120 Heidelberg, Germany. o.jaekel@dkfz.de
pubmed:publicationType
Journal Article