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Liquid ionization c...
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Daşu, AlexandruUmeå University
(author)
Liquid ionization chamber measurements of dose distributions in small 6 MV photon beams
- Article/chapterEnglish1998
Publisher, publication year, extent ...
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1999-01-01
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IOP Publishing,1998
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-72010
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72010URI
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https://doi.org/10.1088/0031-9155/43/1/002DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-509474URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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A new liquid ionization chamber (LIC) design optimized for high spatial resolution was used for measurements of dose distributions in radiation fields intended for stereotactic radiosurgery (SRS). This work was mainly focused on the properties of this detector in radiation fields from linear accelerators for clinical radiotherapy (pulsed radiation with dose rates from approximately 0.5 to 5 Gy min-1 and beam diameters down to 8 mm). The narrow beams used in stereotactic radiosurgery require detectors with small sizes in order to provide a good spatial resolution. The LIC is investigated to see whether it can be used as a detector for dose measurements in beams currently used for stereotactic radiosurgery. Its properties are compared with those of silicon diodes. The comparisons include output factor (OF), depth dose and profile measurements in 6 MV photon fields of different sizes. For OF measurements, an NACP air ionization chamber was also used in the comparison. The dependence of the response on the detector orientation in the photon beam is also investigated for the diodes and the LIC. The results suggest that LICs can provide better properties than diodes for measuring dose distributions in narrow photon beams.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Löfroth, Per-OlovUmeå University
(author)
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Wickman, GöranUmeå University
(author)
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Umeå University
(creator_code:org_t)
Related titles
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In:Physics in Medicine and Biology: IOP Publishing43:1, s. 21-360031-91551361-6560
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