Geant4Simulation Of Radioactive Source¹⁰³Pd Brachytherapy Of Brain Tumors

In the modern society, the tumor has become the first disease to threat people’slife and health, for the malignant tumor’s treatment, at present in the medicine sciencethe main methods include operation, chemotherapy and radiotherapy.But for amajority of tumor patients,they found the disease relatively late, so they can not get arational treatment. Therefore, for the most of medical staffs, continuously explore anew tumor treatment program have always become a concern thing.With the development of nuclear technology and the level of medical’s boosting,radioactive particle source is directly put into tumor inside or around the tumor in thehuman body, by releasing sustainable energy ray, the cells were irradiatedcontinuously. In order to protect the normal tissues are not damaged or slight damaged,the tumor tissue lose the ability of reproduce, and has been subjected to maximundestruction. This method has been more and more widely used, and clinically hasachieved initial results in clinically.Because radioactive particle source is directly put into the human body, so thedose deposition of target section will effect the result of treatment, so we mustsimulate calculate the dose deposition of radioactive particle source, it only can beapplied in clinically. Geant4program can simulate interaction of material and particleby creating physical model, it has been applied very widely in nuclear medicine. Inthis paper, using Geant4program to simulate gamma ray that103Pd radioactiveparticle released, and irradiate has already created the brain tumor model, thenaccurately simulate calculate the dose deposition of target section, and draw the imageof the dose deposition. It is concluded the best palce and maxium dose when put theparticle source into the target section.