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KMID : 0362919920100010095
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Journal of the Korean Society for Therapeutic Radiology and Oncology
1992 Volume.10 No. 1 p.95 ~ p.100
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New Techniques for Optimal Treatment Planning for LINAC-based Sterotactic Radiosurgery
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Suh Tae-Suk
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Abstract
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Since LINAC-based stereotactic radiosurgery uses multiple noncoplanar arcs, three-dimensional dose evaluation and many beam parameters, a lengthy computation time is required to optimize even the simplest case by a trial and error. The basic approach presented in this paper is to show promising methods using an experimental optimization and an analytic optimization. The purpose of this paper is not to describe the detailed methods, but introduce briefly, proceeding research done currently or in near future. A more detailed description will be shown in ongoing published papers.
Experimental optimization is based on two approaches. One is shaping the target volumes through the use of multiple isocenters determined from dose experience and testing. The other method is conformal therapy using a beam´s eye view technique and field shaping. The analytic approach is to adapt computer-aided design optimization in finding optimum irradiation parameters automatically.
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KEYWORD
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Stereotactic radiosurgery, Optimization, Conformal therapy, Multiple isocenters, LINAC
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