True three-dimensional dose computations for megavoltage x-ray therapy: a role for the superposition principle.

Abstract

The objective of radiation therapy is to concentrate a prescribed radiation dose accurately within a target volume in the patient. Major advances in imaging technology have greatly improved our ability to plan radiation treatments in three dimensions (3D) and to verify the treatment geometrically, but there is a concomitant need to improve dosimetric… (More)

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