Abstract
Interventional radiology procedures can be very complex and they can
lead to relatively high doses to personnel who stand close to the primary radiation field and are mostly exposed to radiation
scattered by the patient. For the adequate dosimetry of the scattered photons, APDs must be able to respond to low-energy
[10–100 keV] and pulsed radiation with relatively high instantaneous dose rates. An intercomparison of five APD models
deemed suitable for application in interventional radiology was organised in March 2007. The intercomparison used pulsed
and continuous radiation beams, at CEA-LIST (Saclay, France) and IRSN (Fontenay-aux-Roses, France), respectively. A
specific configuration, close to the clinical practice, was considered. The reference dose, in terms of Hp(10), was derived from
air kerma measurements and from the measured and calculated energy distributions of the scattered radiation field.
Additional Monte Carlo calculations were performed to investigate the energy spectra for different experimental conditions of
the intercomparison. The results of this intercomparison are presented in this work and indicate which APDs are able to
provide a correct response when used in the specific low-energy spectra and dose rates of pulsed X-rays encountered in interventional
radiology.
Details
Original language | English |
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Pages (from-to) | 340-345 |
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Journal | Radiation protection dosimetry |
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Volume | 129 |
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Issue number | 1-3 |
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DOIs | |
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Publication status | Published - 24 May 2008 |
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Event | Sentinel Workshop - Delft, Netherlands Duration: 18 Apr 2007 → 20 Apr 2007 |
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