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Title: Image guidance in radiation therapy
Authors: Law, YY 
Issue Date: 2008
Publisher: World Scientific
Source: In AP Dhawan, HK Huang & DS Kim (Eds.), Principles and advanced methods in medical imaging and image analysis, p. 635-662. Singapore: World Scientific, 2008 How to cite?
Abstract: Radiation therapy is one of the modalities for treating cancers. It has been image-based since its early stage of implementation. Medical images are used in radiation therapy for tumor diagnosis, tumor delineation, treatment planning and treatment verification. Computerization and advanced development in medical imaging have revolutionarized the practice of radiation therapy. The invention of computer-controlled multileaf collimators leads to the development of conformal radiation therapy and intensity modulated radiation therapy which enables the irradiated target volume to be more conformed to the shape of the tumor, sparing more surrounding normal tissue and thus decrease the probability of toxic effects to normal tissue. At the same time, a higher dose can be delivered to the tumor for better tumor control. However, systematic and random errors due to patient positioning and organ motion occur in a course of radiation therapy. They need to be monitored and accounted for by more stringent image guidance methods at times of tumor delineation, treatment planning and treatment delivery. This chapter describes the concept of image guidance in radiation therapy and reviews the different technologies adopted for image-guided radiation therapy.
ISBN: 9789812705341 (hbk.)
9812705341 (hbk.)
9789812705358 (pbk.)
981270535X (pbk.)
Appears in Collections:Book Chapter

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