Exposure Dose Calculation Using Monte Carlo Calculation
In radiotherapy, X-ray images and Cone Beam CT are taken before treatment to confirm the tumor location and patient position, and to confirm that the radiation is delivered to the exact target area. However, radiation therapy can last for more than 30 days in the long term, and daily X-ray imaging poses a problem of medical radiation exposure. Therefore, we have developed a simulation system to evaluate the radiation dose during the position-matching process.
Development and clinical application of radiotherapy aids using the 3D printer
To improve the accuracy of treatment with X-rays and … and electron beams, a radiation therapy aid called a bolus is used. Commercially available boluses cannot adhere tightly to the skin. The use of a 3D printer to create an individual bolus for each patient has made it possible to realize more accurate radiation therapy planning (more accurate treatment).To improve the accuracy of treatment with X-rays and … and electron beams, a radiation therapy aid called a bolus is used. Commercially available boluses cannot adhere tightly to the skin. The use of a 3D printer to create an individual bolus for each patient has made it possible to realize more accurate radiation therapy planning (more accurate treatment).
Works
- Effect of gantry speed on accuracy of extracted target motion trajectories and image quality in 4D-CBCT: Phantom study.
Yuasa Y, Shiinoki T, Fujimoto K, Hanazawa H, Uehara T, Koike M, Shibuya K.
Biomed. Phys. Eng. Express 3 (2017) 067001 - Estimation of effective imaging dose and excess absolute risk of secondary cancer incidence for four-dimensional cone-beam computed tomography acquisition.
Yuasa Y, Shiinoki T, Onizuka R, Fujimoto K.
J Appl Clin Med Phys. 2019 Nov;20(11):57-68. doi: 10.1002/acm2.12741. - Efficacy of patient-specific bolus created using three-dimensional printing technique in photon radiotherapy.
Fujimoto K, Shiinoki T, Yuasa Y, Hanazawa H, Shibuya K.
Phys Med. 2017 Jun;38:1-9.