Establishment And Research On The Phantom Used For Functional Performance Measurement Of The Body’s Gamma Knife

Radiotherapy is a treatment for malignant tumor of one of the three greatest means,already have been in extensively applied in medical organization at home and abroad.Multi-Source Stereotactic Radiotherapy System with Gamma Beam for Body Lesion(beso called "the body’s gamma knife"), Which use several radioactive sources and aseries of and different size of collimator, formation a focus of radiation beams, precisionfixed the position of tumor combine with dose to radiation tumor. The structure of thebody’s gamma knife is more complicated. The abroad doesn’t have the same kindproduct currently. And is also a high risk large medical equipment, The differentmanufacturer of the body’s gamma knife have different design thought and the methodof implementation. For standardizing the quality and safety the use of this product,make it able to compare on the same platform to help the development, production,testing and use of the product is becoming a necessary work. For this, Beijing Center forMedical Device Quality Supervision and Testing of State Food and DrugAdministration united related manufacturer to draft industry standard YY-20XX:20XX“Stereotactic Radiotherapy System with Gamma Beam Part2: Multi-SourceStereotactic Radiotherapy System with Gamma Beam for Body Lesion”.This textanalyzed the existence question in using the traditional spheroid phantom to the test ofthe body’s gamma knife, developed a new appropriation body’s phantom which issuitable for the test of the body’s gamma knife, give a introduction to the establishmentprocess and design according of the body’s phantom, and used the body phantomcomplete the verification and research for the new industry standard for at two kinds ofthe common use body’s gamma knife product in clinic, combined the Industry Standardto make sure to the test item which is suitable for the appropriation body phantom. Theresearch conclusion is that compared with traditional spheroid phantom, The new bodyphantom can simulate the patient much more actually, and the test result also can muchmore reflect the characteristic in the clinical application of body’s gamma knife.