Ontology type: schema:ScholarlyArticle
2008-07
AUTHORSAsghar Mesbahi, Farshad Seyed Nejad
ABSTRACTPURPOSE: Several studies on the dosimetric properties of unflattened photon beams have shown some advantages for radiotherapy. In this study, the effect of removing the flattening filter from an 18-MV photon beam was investigated using the Monte Carlo method. MATERIALS AND METHODS: The 18-MV photon beam of an Elekta SL25 linear accelerator was simulated using the MCNP4C Monte Carlo (MC) code. Beam dosimetric features, including central axis absorbed doses, beam profiles, and photon energy spectra, were calculated for flattened and unflattened 18-MV photon beams. RESULTS: A 4.24-fold increase in the dose rate was seen for the unflattened beam with a field size of 10 x 10 cm(2). A decrease in the out-of-field dose up to 30% was seen for the unflattened beam. For the unflattened beam, photon energy spectra were softer, and the mean energies of the spectra were higher for a smaller field size. CONCLUSION: Our study showed that the increase in dose rate and lower out-of-field dose can be possible advantages for an unflattened 18-MV beam. More... »
PAGES331-336
http://scigraph.springernature.com/pub.10.1007/s11604-008-0234-y
DOIhttp://dx.doi.org/10.1007/s11604-008-0234-y
DIMENSIONShttps://app.dimensions.ai/details/publication/pub.1052131987
PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/18677606
JSON-LD is the canonical representation for SciGraph data.
TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT
[
{
"@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json",
"about": [
{
"id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/0299",
"inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/",
"name": "Other Physical Sciences",
"type": "DefinedTerm"
},
{
"id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/02",
"inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/",
"name": "Physical Sciences",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Monte Carlo Method",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Particle Accelerators",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Photons",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Radiometry",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Radiotherapy Planning, Computer-Assisted",
"type": "DefinedTerm"
}
],
"author": [
{
"affiliation": {
"alternateName": "Tabriz University of Medical Sciences",
"id": "https://www.grid.ac/institutes/grid.412888.f",
"name": [
"Medical Physics Department, Medical School, Tabriz University of Medical Sciences, Attare-Neishabouri Street, Tabriz, Iran",
"Radiation Oncology Department, Imam-Khomeini Hospital, Tabriz, Iran"
],
"type": "Organization"
},
"familyName": "Mesbahi",
"givenName": "Asghar",
"id": "sg:person.01126407214.16",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01126407214.16"
],
"type": "Person"
},
{
"affiliation": {
"name": [
"Radiation Oncology Department, Imam-Khomeini Hospital, Tabriz, Iran"
],
"type": "Organization"
},
"familyName": "Nejad",
"givenName": "Farshad Seyed",
"id": "sg:person.0575460037.21",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0575460037.21"
],
"type": "Person"
}
],
"citation": [
{
"id": "https://doi.org/10.1016/j.apradiso.2005.12.012",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1006833084"
],
"type": "CreativeWork"
},
{
"id": "sg:pub.10.1007/s11604-007-0142-6",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1008784864",
"https://doi.org/10.1007/s11604-007-0142-6"
],
"type": "CreativeWork"
},
{
"id": "sg:pub.10.1007/s11604-007-0142-6",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1008784864",
"https://doi.org/10.1007/s11604-007-0142-6"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.meddos.2007.01.010",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1014353500"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1118/1.2201149",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1026104225"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.apradiso.2004.07.008",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1028716065"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1118/1.2174720",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1037498722"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1118/1.2198327",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1040477947"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.apradiso.2007.04.023",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1041725515"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1088/0031-9155/48/21/r01",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1059024966"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1088/0031-9155/49/8/011",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1059025501"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1088/0031-9155/51/7/019",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1059026487"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1088/0031-9155/51/7/019",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1059026487"
],
"type": "CreativeWork"
}
],
"datePublished": "2008-07",
"datePublishedReg": "2008-07-01",
"description": "PURPOSE: Several studies on the dosimetric properties of unflattened photon beams have shown some advantages for radiotherapy. In this study, the effect of removing the flattening filter from an 18-MV photon beam was investigated using the Monte Carlo method.\nMATERIALS AND METHODS: The 18-MV photon beam of an Elekta SL25 linear accelerator was simulated using the MCNP4C Monte Carlo (MC) code. Beam dosimetric features, including central axis absorbed doses, beam profiles, and photon energy spectra, were calculated for flattened and unflattened 18-MV photon beams.\nRESULTS: A 4.24-fold increase in the dose rate was seen for the unflattened beam with a field size of 10 x 10 cm(2). A decrease in the out-of-field dose up to 30% was seen for the unflattened beam. For the unflattened beam, photon energy spectra were softer, and the mean energies of the spectra were higher for a smaller field size.\nCONCLUSION: Our study showed that the increase in dose rate and lower out-of-field dose can be possible advantages for an unflattened 18-MV beam.",
"genre": "research_article",
"id": "sg:pub.10.1007/s11604-008-0234-y",
"inLanguage": [
"en"
],
"isAccessibleForFree": false,
"isPartOf": [
{
"id": "sg:journal.1095005",
"issn": [
"1867-1071",
"1867-108X"
],
"name": "Japanese Journal of Radiology",
"type": "Periodical"
},
{
"issueNumber": "6",
"type": "PublicationIssue"
},
{
"type": "PublicationVolume",
"volumeNumber": "26"
}
],
"name": "Monte Carlo study on a flattening filter-free 18-MV photon beam of a medical linear accelerator",
"pagination": "331-336",
"productId": [
{
"name": "readcube_id",
"type": "PropertyValue",
"value": [
"f85291cca1b25fe67617fc868b739be1ee5087c67d7104c8ec72f7683d52c51a"
]
},
{
"name": "pubmed_id",
"type": "PropertyValue",
"value": [
"18677606"
]
},
{
"name": "nlm_unique_id",
"type": "PropertyValue",
"value": [
"8412264"
]
},
{
"name": "doi",
"type": "PropertyValue",
"value": [
"10.1007/s11604-008-0234-y"
]
},
{
"name": "dimensions_id",
"type": "PropertyValue",
"value": [
"pub.1052131987"
]
}
],
"sameAs": [
"https://doi.org/10.1007/s11604-008-0234-y",
"https://app.dimensions.ai/details/publication/pub.1052131987"
],
"sdDataset": "articles",
"sdDatePublished": "2019-04-10T15:04",
"sdLicense": "https://scigraph.springernature.com/explorer/license/",
"sdPublisher": {
"name": "Springer Nature - SN SciGraph project",
"type": "Organization"
},
"sdSource": "s3://com-uberresearch-data-dimensions-target-20181106-alternative/cleanup/v134/2549eaecd7973599484d7c17b260dba0a4ecb94b/merge/v9/a6c9fde33151104705d4d7ff012ea9563521a3ce/jats-lookup/v90/0000000001_0000000264/records_8663_00000524.jsonl",
"type": "ScholarlyArticle",
"url": "http://link.springer.com/10.1007%2Fs11604-008-0234-y"
}
]Download the RDF metadata as: json-ld nt turtle xml License info
JSON-LD is a popular format for linked data which is fully compatible with JSON.
curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/s11604-008-0234-y'
N-Triples is a line-based linked data format ideal for batch operations.
curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/s11604-008-0234-y'
Turtle is a human-readable linked data format.
curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/s11604-008-0234-y'
RDF/XML is a standard XML format for linked data.
curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s11604-008-0234-y'
This table displays all metadata directly associated to this object as RDF triples.
133 TRIPLES
21 PREDICATES
45 URIs
26 LITERALS
14 BLANK NODES