Changes between Version 2 and Version 3 of Communication/Seminars/2019/11-27-RADOGNA-Raffaella

Nov 6, 2019 9:57:39 PM (2 years ago)



  • Communication/Seminars/2019/11-27-RADOGNA-Raffaella

    v2 v3  
    1 = "" - Raffaella Radogna (UCL) =
     1= "A calorimeter for particle therapy range verification" - Raffaella Radogna (UCL) =
    33* [#abstract Abstract]
    1616== Abstract ==
    18 Coming soon ...
     18Particle beam therapy provides significant benefits over conventional X-ray radiotherapy. Protons and heavier ions lose most of their energy in the last few millimetres of their path (Bragg Peak), enabling tumours to be targeted with greater precision and reducing the collateral damage to surrounding healthy tissue. An important challenge in particle therapy is the uncertainty in the range of the beam.
     22To ensure that treatment is delivered safely, a range of quality assurance (QA) procedures are carried out each day before treatment starts.
     24A detector is currently under development at University College London
     25to provide fast and accurate proton range verifications, and speed up the daily QA process. The new system utilises a multi-layer calorimeter to record the depth-dose distribution of a proton therapy treatment beam and make direct measurements of the Water Equivalent Path Length (WEPL) with high resolution at clinical rates.
     29The range calorimeter is also used to test the achievable sensitivity of real-time theranostics for carbon treatment using a mixed He/C beam.
     31Range uncertainties caused by intra-fractional motion during carbon ion treatment could be monitored online using a small contamination of helium ions in the beam. At the same energy per nucleon, helium ions have about three times the range of carbon ions, which could allow, for certain tumours, a simultaneous use of the carbon beam for treatment and the helium beam for imaging.
     33In this talk, the design and performance of the Quality Assurance Range Calorimeter (QuARC) are presented.