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Tumors in the abdomen and lungs often have respiration-induced motion and require precise tumor localization in real-time treatment delivery. In image-guided radiation therapy (IGRT), various internal and external surrogates have been introduced to derive tumor positions during treatment. Thus IGRT can potentially increase the treatment effectiveness for tumors in these locations. However, raw internal...
The treatment of moving targets is a primary challenge of radiotherapy. Internal margin has been widely used to account for the geometric displacement of moving targets. However, it has not been fully addressed if internal margin is beam specific, rather than purely geometric. A tissue equivalent thorax phantom with a tumor placed in the right lung is used in our study. The simulated tumor moves in...
Image-guided radiation treatment (IGRT) is a recent advancement in the treatment of cancer patients with tumors in the abdomen or lungs. However, the efficacy of radiation treatment in these locations is often degraded by tumor respiratory motion. Therefore, the characterization and prediction of tumor motion are critical for precise cancer radiation treatment. This paper describes an approach for...
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