Development of Treatment Planning Software for Carbon-ion Scanning at Himac
نویسندگان
چکیده
FOR CARBON-ION SCANNING AT HIMAC T. Inaniwa, T. Furukawa,S. Sato, S. Mori, N. Kanematsu, K. Noda, National Institute of Radiological Sciences, Chiba, JAPAN T. Kanai, Gunma University, Maebashi, JAPAN Abstract In order to use an intensity-controlled raster scan method at the new treatment facility in HIMAC, we have developed a code system dedicated to the planning of radiotherapy with the scanned C beam. Inverse planning techniques are implemented in the software in order to obtain the uniform biological dose distribution within the planned target volume (PTV) as well as reduce the dose delivered to the organ at risks (OARs) delineated on clinical CT images. The scan trajectory is determined so that the path length will be minimized by applying a fast simulated annealing algorithm for scan trajectory optimisation. Furthermore, the extra dose inevitably delivered to the irradiated site during the beam transition time from one spot to the next spot is integrated into the inverse planning process to shorten the treatment time. The code also copes with the planning for intensity modulated ion therapy (IMIT). The reliability of the developed code has been confirmed through the irradiation experiments at the secondary beam line in HIMAC.
منابع مشابه
Recent Progress of Heavy-ion Cancer Radiotherapy with Nirs-himac
The carbon-ion radiotherapy (RT) with HIMAC has been conducted since 1994, and the accumulated number of patients treated exceeded 7,500 in July 2013. On the basis of the HIMAC experience, NIRS developed a compact carbon-ion RT facility in order to boost the carbon-ion RT in Japan, and a pilot facility of this work was constructed and conducted at the Gunma University. Toward the further develo...
متن کاملMapping of RBE-weighted doses between HIMAC- and LEM-Based treatment planning systems for carbon ion therapy.
PURPOSE A method was developed to convert clinically prescribed RBE (Relative Biological Effectiveness)-weighted doses from the approach used at the Heavy-Ion Medical Accelerator (HIMAC) at the National Institute of Radiological Science, Chiba, Japan, to the LEM (Local Effect Model)-based TReatment planning for Particles (TRiP98) approach used in the pilot project at the GSI Helmholtzzentrum, D...
متن کاملUpdating of HIMAC beam delivery with broad beam method
Carbon ion radiotherapy at HIMAC started in 1994 using two horizontal and two vertical beam ports with broad beam method. The maximum beam energy extracted from accelerators was 400 MeV/n for the horizontal beam port, and 350 MeV/n for the vertical one. In recent years, the scope of diseases that can be treated by the carbon ion radiotherapy has widened and their tumor targets have varied in di...
متن کاملResearch on Cancer Therapy with Carbon Beams - Development of Human - Friendly Cancer Therapy with Carbon
called the “Center”) was established in 1993 when NIRS completed construction of the HIMAC. Since then it has been carrying out clinical, biological and physics research using heavy ions generated from the HIMAC. After accumulating clinical experiences of carbon ion radiotherapy (C-ion RT) in various types of malignant tumors, the Center was successful in obtaining approval from the Ministry of...
متن کاملResearch on Cancer Therapy with Carbon Beams
abbreviated as “Center”) was established in 1993 when NIRS completed construction of the HIMAC. Since then its researchers have been carrying out clinical, biological and physics studies using heavy ions generated from the HIMAC. After accumulating many clinical experiences for carbon ion radiotherapy in various types of malignant tumors, the Center successfully obtained approval from the Minis...
متن کامل