Login
INSIDE - DOSE PROFILER

The space selectivity of the hadrontherapy asks for a new approach to the delivered dose monitoring. The uncertainty on the position of the dose released in hadrontherapy is of the order of few millimeters that can be larger than the dimension of the peak of the dose release (Bragg Peak). A precise monitoring of the dose is then essential for a good quality control of the treatment. Furthermore, the dose monitoring would be particularly useful if provided during the treatment (in-beam monitoring) in order to provide a fast feedback to the beam.

It has been demonstrated that the longitudinal distribution of the emission point of charged secondaries can be correlated with the Bragg Peak position. Within the INSIDE (INnovative Solutions for In-beam DosimEtry in hadron therapy) project a new device has been designed and built to measure with high efficiency the charge particle (proton dominated) emission profile in carbon treatments.

The detector (schematized in the figure) is composed of 6 planes (in orange) of two orthogonally placed scintillating fibers layer (384 fibers each) to provide bi-dimentional view, followed by two plastic scintillator layers (in blue). The fibers readout is performed by means of Silicon Photomultipliers (SiPM) coupled to the the fibers on both the sides.

 

 

 

 

Who: 

G. Battistoni, M. De Simoni, M. Fischetti, M. Marafini, I. Mattei, S. Muraro, V. Patera, A. Sarti, A. Schiavi, A. Sciubba, G. Traini.

 

Collaborations:

• Fluka group in Milano and CERN

• GSI

• HIT

• Politecnico di Milano

• Univ. di Pisa

 

INSIDE: INnovative Solutions for In-beam DosimEtry in hadrontherapy

The INSIDE (Innovative Solutions for In-Beam Dosimetry in hadrontherapy) MIUR project is born from the collaboration of a number of Italian Universities and INFN to build a multimodal in-beam dose monitoring system able to detect at the same time, back-to-back gammas from β + annihilation and charged secondary particles with kinetic energy higher than 30 MeV (prompt photons with energies higher than 1 MeV can be exploited as well). The monitor will be made up of 2 planar of 10 × 20 cm2 PET heads for back-to-back gammas detection and of a 20×20 cm2 dose profiler for protons detection.

 

 

 

 

 

 

Who: 

G. Battistoni,  F. Collamati, E. De Lucia, P.M. Frallicciardi, R. Faccini, M. Marafini, S. Muraro, I. Mattei, V. Patera, L. Piersanti, A. Sarti, A. Sciubba, G. Traini, C. Voena

 

Collaborations:

• Fluka group in Milano and CERN

• GSI

• HIT

• Politecnico di Milano

• Univ. di Pisa

 

Papers:

  • L. Piersanti et al, “Measurement of charged particle yields from PMMA irradiated by a 220 MeV/u 12C beam”, Phys. Med. Biol. 59 (2014) 1857-1872.
  • F. Bellini et al, “Extended calibration range for prompt photon emission in ion beam irradiation”, Nucl. Inst. Meth. in Phys. Res. A 745C (2014), 114-118
  • C. Agodi et al, “Charged particle’s flux measurement from PMMA irradiated by 80 MeV/u carbon ion beam”, Physics in Medicine, Biology, vol. 57 n. 18, 2012. [Download]
  • C. Agodi et al, “Study of the time, space distribution of β+ emitters from 80 MeV/u carbon ion beam irradiation on PMMA”, Nucl. Inst., Meth. in Phys. Res. Section B, Beam Interaction with Materials, Atoms, vol. 283 n. 0, 2012.
  • C. Agodi et al, “Precise measurement of prompt photon emission from 80 MeV/u carbon ion beam irradiation”, Journal of Instrumentation, vol. 7, P03001, 2012. [Download]