Process quality improvement analysis for the acquisition of reproducible real time motion data in a clinical environment Public Deposited

In a preliminary study that compared two immobilization devices in their ability to minimize prepositioning deviation during stereotactic body radiation therapy (SBRT) of the lung, liver or spine, it was found that patients in the BodyFIX system required shifts up to four times greater than those in a Vac-Lok system. A follow on study was designed to compare the BodyFIX and Vac-Lok systems with regard to pa-tient stability during each SBRT treatment session. In order to conduct the latter study, irrespective of the immobilization device or the motion tracking methodology utilized, realistic guidelines on study implementation are highly desirable. The purpose of this study is to derive a protocol that will facilitate reproducible data acquisition.

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