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The Geant4 simulation toolkit has been widely accepted in particle therapy domain for more accurate treatment planning. In Japan, the PTSIM, Particle Therapy System Simulation Framework, has been developed by the fund from the Core Research for Evolutional Science and Technology of Japan Science and Technology Agency, JST/CREST. The PTSIM provides a common platform to model beam delivery systems including...
Interpretation of medical image is often difficult and time consuming, even for experienced physicians. Medical imaging plays an important role in detecting infected area in lungs. Significant efforts within the field of radiation oncology have recently been centered on the ability to automatically detect lung infection in a breathing patient in real-time during radiation treatment using digital x-ray...
The aim of this study is to provide a method to track the anatomical alterations of parotid glands during radiation treatment. The method we implemented is based on an intensity-based free-form deformable registration to realign the planning kilo-voltage CT (kVCT) and the daily mega-voltage (MVCT) image sets and on an automatic contour propagation algorithm based on surface construction by triangular...
Intensity modulated radiation therapy (IMRT) for cancers in the lung remains challenging due to the complicated respiratory dynamics. We propose a shape-navigated dense image deformation model to estimate the patient-specific breathing motion using 4D respiratory correlated CT (RCCT) images . The idea is to use the shape change of the lungs, the major motion feature in the thorax image, as a surrogate...
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