Tomotherapy (Slice Therapy)

Abstract

homotheraphy slice is the proposal for the delivery of radiation therapy with intensity- modulated strips of radiation. The proposed method employs alinear accelerator, which would be mounted on aring gantry like a helical tomotherapy (CT scanner). The patient would move through the bore of the gantry simultaneously with gantry rotation. The intensity modulation would be performed by temporally modulated multiple independent leaves that open and close across the slit opening. This method would result in the delivery of highly conformal radiation and overall treatment times should be comparable with contemporary treatment delivery times. The dose reconstruction capabilities provide an ability to determine the dose actually delivered to the patient. The ring gantry would make it convenient to mount anarrow multisegmental megavoltage detector system for beam verification and aCTscanner on the treatment unit. A treatment unit could become a powerful tool for treatment planning, conformal treatment and verification using tomographic images. In this review a full description of the development of this novel technique is given , properties, advantages and applicability of this device are evaluated and the fundamental design specifications are justified. There is no previous studies for that purpose in Saudi Arabia so, researchers recommend that king Khalid hospital in Najran to implement Tomotheraphy unit in the near future for improving imaging and treatment planning .