Relations between scatter factor, quality index and attenuation for x-ray beams
The relations between the attenuation factor, the normalized phantom scatter factor and the quality index are examined using a semiempirical formula for the dose on the central axis of an x-ray beam in water. The study is restricted to depths and field sizes sufficient for electron equilibrium. The...
Gespeichert in:
| Veröffentlicht in: | Physics in medicine & biology 1998-05, Vol.43 (5), p.1325-1330 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1330 |
|---|---|
| container_issue | 5 |
| container_start_page | 1325 |
| container_title | Physics in medicine & biology |
| container_volume | 43 |
| creator | Bjärngard, Bengt E Vadash, Paul |
| description | The relations between the attenuation factor, the normalized phantom scatter factor and the quality index are examined using a semiempirical formula for the dose on the central axis of an x-ray beam in water. The study is restricted to depths and field sizes sufficient for electron equilibrium. The results are compared with data in the recent literature. It is concluded that for x-ray beams in the energy range 4-25 MV the normalized scatter factors can be calculated from the dose-weighted average linear attenuation coefficient in water, determined from transmission measurements in a narrow-beam geometry or from the quality index. |
| doi_str_mv | 10.1088/0031-9155/43/5/020 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmed_primary_9623659</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>79928183</sourcerecordid><originalsourceid>FETCH-LOGICAL-c494t-b7230115c20bde16d584a68a6f767b2d4524fd93a25c7b8e264c6896033f7a643</originalsourceid><addsrcrecordid>eNqNkM1LwzAchoMoc07_AUHIQQTB2nw3PcrwCwYD0XNI0wQq_VrS4vbf27qyyy6ecnif9_2FB4BrjB4xkjJGiOIoxZzHjMY8RgSdgDmmAkeCC3QK5gfgHFyE8I0QxpKwGZilglDB0zlYf9hSd0VTB5jZ7sfaGgaju8566LTpGv8AN70ui24Hizq3W6jrHI553f_VoGs83EZe74a-rsIlOHO6DPZqehfg6-X5c_kWrdav78unVWRYyrooSwgdPsMNQVlusci5ZFpILVwikozkjBPm8pRqwk2SSUsEM0KmAlHqEi0YXYC7_W7rm01vQ6eqIhhblrq2TR9UkqZEYkkHkOxB45sQvHWq9UWl_U5hpEaLapSkRkmKUcXVYHEo3UzrfVbZ_FCZtA357ZTrwVbpvK5NEQ4YIWTYG2eiPVY07f_O3h_zx5xqc0d_AfCKkyo</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>79928183</pqid></control><display><type>article</type><title>Relations between scatter factor, quality index and attenuation for x-ray beams</title><source>MEDLINE</source><source>Institute of Physics Journals</source><creator>Bjärngard, Bengt E ; Vadash, Paul</creator><creatorcontrib>Bjärngard, Bengt E ; Vadash, Paul</creatorcontrib><description>The relations between the attenuation factor, the normalized phantom scatter factor and the quality index are examined using a semiempirical formula for the dose on the central axis of an x-ray beam in water. The study is restricted to depths and field sizes sufficient for electron equilibrium. The results are compared with data in the recent literature. It is concluded that for x-ray beams in the energy range 4-25 MV the normalized scatter factors can be calculated from the dose-weighted average linear attenuation coefficient in water, determined from transmission measurements in a narrow-beam geometry or from the quality index.</description><identifier>ISSN: 0031-9155</identifier><identifier>EISSN: 1361-6560</identifier><identifier>DOI: 10.1088/0031-9155/43/5/020</identifier><identifier>PMID: 9623659</identifier><identifier>CODEN: PHMBA7</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Beam optics ; Beam profile, beam intensity ; Electromagnetism; electron and ion optics ; Exact sciences and technology ; Fundamental areas of phenomenology (including applications) ; Models, Theoretical ; Phantoms, Imaging ; Physics ; Radiotherapy Planning, Computer-Assisted ; Radiotherapy, High-Energy - methods ; Scattering, Radiation ; X-Rays</subject><ispartof>Physics in medicine & biology, 1998-05, Vol.43 (5), p.1325-1330</ispartof><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c494t-b7230115c20bde16d584a68a6f767b2d4524fd93a25c7b8e264c6896033f7a643</citedby><cites>FETCH-LOGICAL-c494t-b7230115c20bde16d584a68a6f767b2d4524fd93a25c7b8e264c6896033f7a643</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/0031-9155/43/5/020/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,777,781,27905,27906,53811,53891</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2229150$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9623659$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bjärngard, Bengt E</creatorcontrib><creatorcontrib>Vadash, Paul</creatorcontrib><title>Relations between scatter factor, quality index and attenuation for x-ray beams</title><title>Physics in medicine & biology</title><addtitle>Phys Med Biol</addtitle><description>The relations between the attenuation factor, the normalized phantom scatter factor and the quality index are examined using a semiempirical formula for the dose on the central axis of an x-ray beam in water. The study is restricted to depths and field sizes sufficient for electron equilibrium. The results are compared with data in the recent literature. It is concluded that for x-ray beams in the energy range 4-25 MV the normalized scatter factors can be calculated from the dose-weighted average linear attenuation coefficient in water, determined from transmission measurements in a narrow-beam geometry or from the quality index.</description><subject>Beam optics</subject><subject>Beam profile, beam intensity</subject><subject>Electromagnetism; electron and ion optics</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Models, Theoretical</subject><subject>Phantoms, Imaging</subject><subject>Physics</subject><subject>Radiotherapy Planning, Computer-Assisted</subject><subject>Radiotherapy, High-Energy - methods</subject><subject>Scattering, Radiation</subject><subject>X-Rays</subject><issn>0031-9155</issn><issn>1361-6560</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkM1LwzAchoMoc07_AUHIQQTB2nw3PcrwCwYD0XNI0wQq_VrS4vbf27qyyy6ecnif9_2FB4BrjB4xkjJGiOIoxZzHjMY8RgSdgDmmAkeCC3QK5gfgHFyE8I0QxpKwGZilglDB0zlYf9hSd0VTB5jZ7sfaGgaju8566LTpGv8AN70ui24Hizq3W6jrHI553f_VoGs83EZe74a-rsIlOHO6DPZqehfg6-X5c_kWrdav78unVWRYyrooSwgdPsMNQVlusci5ZFpILVwikozkjBPm8pRqwk2SSUsEM0KmAlHqEi0YXYC7_W7rm01vQ6eqIhhblrq2TR9UkqZEYkkHkOxB45sQvHWq9UWl_U5hpEaLapSkRkmKUcXVYHEo3UzrfVbZ_FCZtA357ZTrwVbpvK5NEQ4YIWTYG2eiPVY07f_O3h_zx5xqc0d_AfCKkyo</recordid><startdate>19980501</startdate><enddate>19980501</enddate><creator>Bjärngard, Bengt E</creator><creator>Vadash, Paul</creator><general>IOP Publishing</general><general>Institute of Physics</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19980501</creationdate><title>Relations between scatter factor, quality index and attenuation for x-ray beams</title><author>Bjärngard, Bengt E ; Vadash, Paul</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c494t-b7230115c20bde16d584a68a6f767b2d4524fd93a25c7b8e264c6896033f7a643</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Beam optics</topic><topic>Beam profile, beam intensity</topic><topic>Electromagnetism; electron and ion optics</topic><topic>Exact sciences and technology</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Models, Theoretical</topic><topic>Phantoms, Imaging</topic><topic>Physics</topic><topic>Radiotherapy Planning, Computer-Assisted</topic><topic>Radiotherapy, High-Energy - methods</topic><topic>Scattering, Radiation</topic><topic>X-Rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bjärngard, Bengt E</creatorcontrib><creatorcontrib>Vadash, Paul</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physics in medicine & biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bjärngard, Bengt E</au><au>Vadash, Paul</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Relations between scatter factor, quality index and attenuation for x-ray beams</atitle><jtitle>Physics in medicine & biology</jtitle><addtitle>Phys Med Biol</addtitle><date>1998-05-01</date><risdate>1998</risdate><volume>43</volume><issue>5</issue><spage>1325</spage><epage>1330</epage><pages>1325-1330</pages><issn>0031-9155</issn><eissn>1361-6560</eissn><coden>PHMBA7</coden><abstract>The relations between the attenuation factor, the normalized phantom scatter factor and the quality index are examined using a semiempirical formula for the dose on the central axis of an x-ray beam in water. The study is restricted to depths and field sizes sufficient for electron equilibrium. The results are compared with data in the recent literature. It is concluded that for x-ray beams in the energy range 4-25 MV the normalized scatter factors can be calculated from the dose-weighted average linear attenuation coefficient in water, determined from transmission measurements in a narrow-beam geometry or from the quality index.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><pmid>9623659</pmid><doi>10.1088/0031-9155/43/5/020</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9155 |
| ispartof | Physics in medicine & biology, 1998-05, Vol.43 (5), p.1325-1330 |
| issn | 0031-9155 1361-6560 |
| language | eng |
| recordid | cdi_pubmed_primary_9623659 |
| source | MEDLINE; Institute of Physics Journals |
| subjects | Beam optics Beam profile, beam intensity Electromagnetism electron and ion optics Exact sciences and technology Fundamental areas of phenomenology (including applications) Models, Theoretical Phantoms, Imaging Physics Radiotherapy Planning, Computer-Assisted Radiotherapy, High-Energy - methods Scattering, Radiation X-Rays |
| title | Relations between scatter factor, quality index and attenuation for x-ray beams |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-17T22%3A58%3A07IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Relations%20between%20scatter%20factor,%20quality%20index%20and%20attenuation%20for%20x-ray%20beams&rft.jtitle=Physics%20in%20medicine%20&%20biology&rft.au=Bj%C3%A4rngard,%20Bengt%20E&rft.date=1998-05-01&rft.volume=43&rft.issue=5&rft.spage=1325&rft.epage=1330&rft.pages=1325-1330&rft.issn=0031-9155&rft.eissn=1361-6560&rft.coden=PHMBA7&rft_id=info:doi/10.1088/0031-9155/43/5/020&rft_dat=%3Cproquest_pubme%3E79928183%3C/proquest_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=79928183&rft_id=info:pmid/9623659&rfr_iscdi=true |