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Experience from lon...
Experience from long-term monitoring of RAKR ratios in Ir-192 brachytherapy
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- Carlsson Tedgren, Åsa (författare)
- Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Medicinsk radiofysik,Radiofysikavdelningen
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- Bengtsson, Emil (författare)
- Karolinska University Hospital
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- Hedtjärn, Håkan (författare)
- Linköpings universitet,Hälsouniversitetet,Medicinsk radiofysik
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- Johansson, Asa (författare)
- Karolinska University Hospital
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- Karlsson, Leif (författare)
- Örebro University Hospital
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- Lamm, Inger-Lena (författare)
- Lund University Hospital
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- Lundell, Marie (författare)
- Karolinska Institutet,Karolinska University Hospital
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- Mejaddem, Younes (författare)
- Karolinska University Hospital
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- Munck af Rosenschold, Per (författare)
- Lund University Hospital
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- Nilsson, Josef (författare)
- Karolinska University Hospital
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- Wieslander, Elinore (författare)
- Lund University Hospital
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- Wolke, Jeanette (författare)
- Karolinska University Hospital
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(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- Engelska.
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Ingår i: Radiotherapy and Oncology. - : Elsevier BV. - 0167-8140 .- 1879-0887. ; 89:2, s. 217-221
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Background: Ratios of values of brachytherapy source strengths, as measured by hospitals and vendors, comprise constant differences as, e.g., systematic errors in ion chamber calibration factors and measurement setup. Such ratios therefore have the potential to reveal the systematic changes in routines or calibration services at either the hospital or the vendor laboratory, which could otherwise be hidden by the uncertainty in the source strength values. Methods: The RAKR of each new source in 13 afterloading units at five hospitals were measured by well-type ion chambers and compared to values for the same source stated on vendor certificates. Results: Differences from unity in the ratios of RAKR values determined by hospitals and vendors are most often small and stable around their mean values to within +/- 11.5%. Larger deviations are rare but occur. A decreasing ratio, seen at two hospitals for the same source, was useful in detecting an erroneous pressure gauge at the vendors site. Conclusions: Establishing a mean ratio of RAKR values, as measured at the hospital and supplied on the vendor certificate, and monitoring this as a function of time are an easy way for the early detection of problems with equipment or routines at either the hospital or the vendor site.
Nyckelord
- Ir-192
- HDR
- PDR
- Reference air-kerma rate
- MEDICINE
- MEDICIN
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- ref (ämneskategori)
- art (ämneskategori)
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Carlsson Tedgren ...
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Bengtsson, Emil
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Hedtjärn, Håkan
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Johansson, Asa
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Karlsson, Leif
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Lamm, Inger-Lena
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visa fler...
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Lundell, Marie
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Mejaddem, Younes
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Munck af Rosensc ...
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Nilsson, Josef
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Wieslander, Elin ...
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Wolke, Jeanette
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- Artiklar i publikationen
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Radiotherapy and ...
- Av lärosätet
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Linköpings universitet
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Karolinska Institutet