Introducing a bony composite as tissue equivalent for radiotherapy phantoms
The use of a device that simulates the actual condition, as well as being equivalent to the human body in materials and tissues, and having the capability of acting like internal motions of human body is necessary to investigate and simulate the motion of a tumor in radiotherapy and to evaluate dosimetrical coverage of the dynamic target. This device which is called the dynamic phantom should simulate and control the tumor and sorrugate motions.In most phantoms, the bone section is either ignored or is from natural bones instead, which lose their quality over time passing, degraded and cause problems. In this study, a composite material similar to the natural bone has been proposed to replace bone tissue in phantom, which is radiotherapically equal to bone tissue.This composite, in contrast to the natural bone, has a longer life, higher strength and the possibility of embedding a variety of dosimeters. It also prepare dosimetrical evaluation of the organs at risk while the treatment of the dynamic tumor.
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