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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제38권 제4호
발행연도
2006.1
수록면
327 - 342 (16page)

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Radiation therapy is an important part of cancer treatment in which cancer patients are treated using high-energy radiationsuch as x-rays, gamma rays, electrons, protons, and neutrons. Currently, about half of all cancer patients receive radiation treatmentduring their whole cancer care process. The goal of radiation therapy is to deliver the necessary radiation dose to cancer cellswhile minimizing dose to surrounding normal tissues. Success of radiation therapy highly relies on how accurately 1) identifiesthe target and 2) aim radiation beam to the target. Both tasks are strongly dependent of imaging technology and many imagingmodalities have been applied for radiation therapy such as CT (Computed Tomography), MRI (Magnetic Resonant Image), andPET (Positron Emission Tomography). Recently, many researchers have given significant amount of effort to develop and improveimaging techniques for radiation therapy to enhance the overall quality of patient care. For example, advances in medical imagingtechnology have initiated the development of the state of the art radiation therapy techniques such as intensity modulated radiationtherapy (IMRT), gated radiation therapy, tomotherapy, and image guided radiation therapy (IGRT). Capability of determiningthe local tumor volume and location of the tumor has been significantly improved by applying single or multi-modality imagingfor static or dynamic target. The use of multi-modality imaging provides a more reliable tumor volume, eventually leading toa better definitive local control. Image registration technique is essential to fuse two different image modalities and has beenin significant improvement. Imaging equipments and their common applications that are in active use and/or under developmentin radiation therapy are reviewed.

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