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3rd International Congress 3rd International of Nuclear Congress Medicine of Nuclear & 15th Medicine Iranian Annual & 15th Iranian Congress Annual of Nuclear Congress Medicine of Nuclear Medicine Shahid Beheshti Shahid Beheshti University University of Medical Sciences of Medical 19-21 Sciences May 201119-21 May 2011 Design and fabrication of imaging detector for medical application Hossein Zamani Zeinali 1 , Maryam Nazari 2 , Anita Alipoor 1 1 Agricultural, Medical and Industrial Research School, Nuclear Science and Technology Research Institute, AEOI, Karaj, Iran. 2 Islamic Azad University of Tehran Introduction: An Imaging detector system, based on scintillation detectors, is designed. Fabricated and optimized for diagnostic radiology, industrial radiography, nuclear medicine and research application. Materials and methods: X radiation beam from a Siemens Stabilipan Orthovoltage unit, after passing through an object, which may be living sample or electronic device, produce a planar distribution of visible light on a GOS(Gd2O2S:Tb3+), that is the image of the object under examination. The image is displaced on a Cathode Ray Tube (CRT) by a Charged Coupled Camera (CCD) camera and is recorded digital by a video capture device. The image quality parameters, including contrast and resolution were determined by Inpatient Quality Indicator (IQI) tests. Imaging practices were carried out for different X ray tube voltages (kV) and Focal-spot Surface Distances (FSD). The data corresponding imaging quality parameters were then analyzed and plotted by MATLAB and Origin software. Results and discussion: The results for image quality parameters (contrast and resolution) for different X ray tube voltages are fairly close to each other. Thus the imaging system has the capability to be used for different X ray energies and radionuclide with relatively desired results. The study is considered to be an initiative for fabricating industrial fluoroscopy and radiation surveillance system in the country. Keywords: QC, Dose calibrators, Nuclear Medicine 156
3rd International Congress of of Nuclear Medicine & & 15th 15th Iranian Annual Annual Congress of Congress of Nuclear Medicine Shahid Beheshti Shahid Beheshti University University of Medical of Medical Sciences Sciences 19-21 19-21 May May 2011 Legal requirements in the operation of laboratory rays Jamal Salehizahaby lawyer Discussion: Performing any activity in connection with the construction, establishment, start-up, operation, knock-up and charging any unit in which the work is done with radiation, requires getting a profession license in the relevant unit and the employment license in the Atomic Energy Organization of Iran. All those persons in terms of their job duties are in connection with the radiation sources, should notify the Atomic Energy Organization of any event, disruption, defect or changes related to radiation sources, which increases the possibility of potential radiation hazards to people and also radiation accidents and human suspicious radiation; Designating the persons to work, which as a result of medical experiments verified by the "Organization", working with the radiation is harmful for their health, is prohibited in these labs; also by comply with all the regulations, standards, by-laws and radiation protection guidelines, those labs should forecast, supply and implement all necessary protective measures and equipment in accordance with related regulations; and should avoid in unnecessary radiation; in the area of their occupational activities, they should provide the facilities for the supervision and inspection of the "Organization" and put the required information and documents in its option. Before and after the recruitment and periodically during employment or in emergency circumstances, the laboratory employees should be checked up by medical required tests and specialized examinations. Conclusion: Scientifically, there is no doubt about the losses caused by the radiation of medical diagnostic laboratories on the human; because of the losses caused by radiation, in the legal perspective, the radiation using is prohibited principally; unless in a case which medical need so appropriate, and in such cases the physician should compare the losses resulting from the operation of the radiation to losses from the disease; in cases which the interests of radiation operation prevail, he can exploit; otherwise he would not be allowed to use; also when using the radiation is necessary, he will suffice as much as necessary and no more. Keywords: Laboratory, human, ray, loss, law. 157
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