Abstract
Introduction Brachytherapy is a well-known treatment technique which delivers a high dose to a tumorous volume yet reducing irradiation for healthy surrounding tissue. Recent developments regarding the use of imaging highlighted the necessity to update and to complete the SFPM n°11 report of 1995 which used to be only about Iridium 192 high dose rate technique. This new report deals with techniques associated to a source projector for any dose rate (high dose rate HDR or pulsed PDR) and permanent Iodine 125 implants. Methods Propositions are based on tests proposed by the SFPM, IAEA, GEC-ESTRO, AAPM, constructor guidelines, a recent bibliographic study and French users experience. Results The report deals with: • Source calibration presenting iridium 192 (most commonly used), Iodine 125 (non-available in French primary laboratory), Cobalt 60 ( still in development) • Different kinds of imaging used for implantation or planning: ultrasound (US), scan (CT), MRI. More particularly, specific tests concerning US are presented due to their use for needles, applicators or sources implantation. • Treatment planning: proposed tests concern mainly algorithms based on TG43 formalism but also new algorithms. Tests are divided into three groups: generic tests common to all techniques, specific tests dealing with treatments delivered by source projectors (HDR or PDR), specific tests concerning permanent implants. • Quality assurance of the source projector is detailed according to HDR/PDR specificities for any radioelement used. Conclusions These guidelines allow defining necessary tests from the implementation of a new technique to the current use. Each test is associated to a frequency and a level of action yet remaining suitable as a matter of clinical routine.
Published Version
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