[Determination of maximum transmission time of the labeled complex to malignant lymphatic cells using cell culture]

Nowadays, radiotherapy is considered as one of the main methods in cancer treatment, which uses radiation to destroy cancer cells while causing minimal damage to normal tissue and. Another cancer treatment method is photoelectron therapy, which is a new treatment for mass tumors. In this method, high atomic number drugs should be absorbed by tumor cells] while using carriers] so, their atomic number is increased compare to normal cells, which causes more damage to tumor cells when radiation is applied. Thus, applying accurate and effective photoelectron therapy would be possible. The purpose of this study was to identify and analyze the factors affecting uptake of Metrezoate labeled with gallium by lymphatic tumors in cell cultures. Since uptake of Gallium by Malignant lymphatic cells has been reported in numerous researches, Gallium was bonded with a contrast media [metrezoate]. Malignant lymphatic cells [Large Cell Lymphoma, Small cell Lymphoma and Bourkit Lymphoma] in specific colonies were grown in gel culture media. Metrezoate-gallium complex was added to the culture media in concentration of 50%, 60% and 75%. Then, absorbed volume was determined by the SPECT imaging system in 72 hrs post-addition of metrezoate-gallium complex and the cells count and the colonies area were measured. Obtained results in 72 hrs revealed that maximum absorption; count quantity and colonies area occurred 4 hrs post-addition of gallium-metrezoate complex solution. As results show, Gallium-metrezoate complex is significantly accumulated in malignant lymphatic cells. As effective atomic number of malignant lymphatic cells is enhanced, it is expected applying photoelectron therapy in this time leads to more effective treatment

Assessment of an tentative novel body of X-ray tube in order to decrease the applicability limitation in medical practice

The output of X-ray, especially in the field of required energy for diagnosing the disease is very low [in diagnosing lamps, it is less than 1%]. In this kind of lamps the rest of the electrical energy is transformed to heat. This considerable amount of heat induces a myriad of too many limitations in choosing higher levels of radiation, particularly in specialized techniques. This process is the outcome of X-ray generating mechanism; thus, one of the proper solutions to reduce the limitations caused by generating high heat is enhancing the cooling rate in these lamps. In this project, the design and alloy of the framework, surface and the substance were altered in a manner whereby the cooling rate increases or heat accumulation in lamps decreases. This surface was designed in the shape of a two-part disc with wings whose substance is the same as the framework. The substance of the framework is made of an alloy of copper and chromium. The disc shape of the framework and its aerodynamic compatibility further expose its contacting surface to the air. This contacting surface can be expanded to 10 times more than the ordinary frameworks. The heat conductivity coefficient of this alloy is approximately 220 w/ mk, which in comparison with the heat conductivity coefficient of the ordinary lamps framework, being about 10, is 22 times more. The results of the tests reveal that the cooling rate of this framework is 10 times [or 1000%] more than the ordinary one. This process reduces the limitations of choosing radiation factors with the same proportion

Increasing of radiographic clinical value by using of radio photo electrostatic imaging system [Xeroradiography]

Ordinary Radiographic film sensitive emulsion is formed by crystals which are composed by millions of ions. According to the film texture, image constructive units number that interfere the image resolution are not increased more than a certain limitation in area unite. This innovation is to present an imaging system that to compare with common similar system has precedence such as highly image resolution, image edge sharpnessenhancement, contrast improvement, patient does reduction, rapid processing and cost decrease. The "Xero" technique is different physical method for imaging procedures in which instead of using the photochemical function, electrostatic effect has been used. The latent electrostatic images develop through toner powder, Because the toner powder particles are fine grain as small as a few compound molecules, Consequently, in the new method, image constructive units number which are described as the toner powder particles are much many more in number than crystals of radiographic films. Xeroradiophotography system is designed and constructed based on xero physical phenomenon in which image can be formed by taking advantage of both, X-Ray and visible light complex procedure for the purpose of X-Rays quality and patients body tissue side effect reduction at the time of exposure. This system has already been made as the first archetype in the world that is possible for optimum improving soon