About: Non-invasive monitoring of therapeutic carbon ion beams in a homogeneous phantom by tracking of secondary ions     Goto   Sponge   NotDistinct   Permalink

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Description
  • Radiotherapy with narrow scanned carbon ion beams enables a highly accurate treatment of tumours while sparing the surrounding healthy tissue. Changes in the patient's geometry can alter the actual ion range in tissue and result in unfavourable changes in the dose distribution. Consequently, it is desired to verify the actual beam delivery within the patient. Real-time and non-invasive measurement methods are preferable. Currently, the only technically feasible method to monitor the delivered dose distribution within the patient is based on tissue activation measurements by means of positron emission tomography (PET). An alternative monitoring method based on tracking of prompt secondary ions leaving a patient irradiated with carbon ion beams has been previously suggested. It is expected to help in overcoming the limitations of the PET-based technique like physiological washout of the beam induced activity, low signal and to allow for real-time measurements. In this paper, measurements of secondary charged particle tracks around a head-sized homogeneous PMMA phantom irradiated with pencil-like carbon ion beams are presented. The investigated energies and beam widths are within the therapeutically used range. The aim of the study is to deduce properties of the primary beam from the distribution of the secondary charged particles. Experiments were performed at the Heidelberg Ion Beam Therapy Center, Germany. The directions of secondary charged particles emerging from the PMMA phantom were measured using an arrangement of two parallel pixelated silicon detectors (Timepix). The distribution of the registered particle tracks was analysed to deduce its dependence on clinically important beam parameters: beam range, width and position. Distinct dependencies of the secondary particle tracks on the properties of the primary carbon ion beam were observed.
  • Radiotherapy with narrow scanned carbon ion beams enables a highly accurate treatment of tumours while sparing the surrounding healthy tissue. Changes in the patient's geometry can alter the actual ion range in tissue and result in unfavourable changes in the dose distribution. Consequently, it is desired to verify the actual beam delivery within the patient. Real-time and non-invasive measurement methods are preferable. Currently, the only technically feasible method to monitor the delivered dose distribution within the patient is based on tissue activation measurements by means of positron emission tomography (PET). An alternative monitoring method based on tracking of prompt secondary ions leaving a patient irradiated with carbon ion beams has been previously suggested. It is expected to help in overcoming the limitations of the PET-based technique like physiological washout of the beam induced activity, low signal and to allow for real-time measurements. In this paper, measurements of secondary charged particle tracks around a head-sized homogeneous PMMA phantom irradiated with pencil-like carbon ion beams are presented. The investigated energies and beam widths are within the therapeutically used range. The aim of the study is to deduce properties of the primary beam from the distribution of the secondary charged particles. Experiments were performed at the Heidelberg Ion Beam Therapy Center, Germany. The directions of secondary charged particles emerging from the PMMA phantom were measured using an arrangement of two parallel pixelated silicon detectors (Timepix). The distribution of the registered particle tracks was analysed to deduce its dependence on clinically important beam parameters: beam range, width and position. Distinct dependencies of the secondary particle tracks on the properties of the primary carbon ion beam were observed. (en)
Title
  • Non-invasive monitoring of therapeutic carbon ion beams in a homogeneous phantom by tracking of secondary ions
  • Non-invasive monitoring of therapeutic carbon ion beams in a homogeneous phantom by tracking of secondary ions (en)
skos:prefLabel
  • Non-invasive monitoring of therapeutic carbon ion beams in a homogeneous phantom by tracking of secondary ions
  • Non-invasive monitoring of therapeutic carbon ion beams in a homogeneous phantom by tracking of secondary ions (en)
skos:notation
  • RIV/68407700:21670/13:00215995!RIV14-TA0-21670___
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(TA01010164)
http://linked.open...iv/cisloPeriodika
  • 58
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 91945
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21670/13:00215995
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Hadron Therapy; Pixel detectors; Tracking; Timepix (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [56167C683C37]
http://linked.open...i/riv/nazevZdroje
  • Physics in Medicine and Biology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 11
http://linked.open...iv/tvurceVysledku
  • Granja, Carlos Humberto
  • Jakůbek, Jan
  • Soukup, Pavel
  • Hartmann, B.
  • Martišíková, M.
  • Gwosh, K.
  • Jäkel, O.
http://linked.open...ain/vavai/riv/wos
  • 000318966200018
issn
  • 0031-9155
number of pages
http://bibframe.org/vocab/doi
  • 10.1088/0031-9155/58/11/3755
http://localhost/t...ganizacniJednotka
  • 21670
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