| Title |
A Patient-Specific QA Procedure for Moving Target Irradiation in Scanned Ion Therapy |
| Authors |
- Y. Hara, T. Furukawa, K. Mizushima, K. Noda, N. S. Saotome, Y. Saraya, T. Shirai, R. Tansho
NIRS, Chiba-shi, Japan
|
| Abstract |
Three-dimensional (3D) pencil-beam scanning technique has been utilised since 2011 in NIRS-HIMAC. The beam delivery system and treatment planning software (TPS) require dosimetric patient-specific QA to check each individual plan. Any change in the scanned beams will result in a significant impact on the irradiation dose. Therefore, patient-specific QA for moving target irradiation requires additional procedure. In an additional QA for moving target irradiation, we placed a 2D ionization chamber on the PMMA plate tilted with respect to the beam axis. The PMMA plate was set on the stage of the moving phantom. The moving phantom was moved according to patient data. We measured the dose distribution for both the static target and the moving target. We compared the results for the moving target with those for the static targets by means of a gamma index analysis. In the additional patient-specific QA, the gamma analysis between the moving and static targets showed a good agreement. We confirmed that this new technique was a beneficial QA procedure for moving target irradiation.
|
| Paper |
download MOPB015.PDF [0.743 MB / 4 pages] |
| Poster |
download MOPB015_POSTER.PDF [1.576 MB] |
| Conference |
IBIC2015, Melbourne, Australia |
| Series |
International Beam Instrumentation Conference (4th) |
| Proceedings |
Link to full IBIC2015 Proccedings |
| Session |
Poster Session 1 |
| Date |
14-Sep-15 16:00–18:00 |
| Main Classification |
Beam Charge Monitors and Other Instruments |
| Keywords |
target, ion, controls, heavy-ion, detector |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Mark Boland (SLSA, Clayton, Australia); David Button (ANSTO, Menai, Australia); Kathleen Riches (SLSA, Clayton, Australia); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-176-2 |
| Published |
January 2016 |
| Copyright |
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