Modernización de Gammacámaras

C. Yegros, J. Nuñez, L. Recalde, C. Villegas, M. Bordas.,,,,,

Grupo de Investigación en Ingeniería Biomédica, Facultad Politécnica, Universidad Nacional de Asunción. San Lorenzo, Paraguay

Keyword: Digitization, analog signals, Gammagraphy, Imagenology, Nuclear Instrumentation, Nuclear Medicine.

Abstrac: In nuclear medicine, gammagraphy is a technique used for diagnosis, treatment and monitoring of oncological diseases, emitted by radioactive source using gamma radiation. The Gamma Cameras (G.C.) are becoming obsolete, in the technological aspect, especially in developing countries, because there are only analog or semi-digital equipment. This project seeks to reactivate an analog camera Gamma, off duty, develop a system that allows recondition the equipment, again allowing its use. This also seeks to evaluate the status of a analog G.C.; developing a signal acquisition system; well as develop an image processing software for it, and facilitate access to low-income patients oncological and endocrinological diagnostics. The methodology is based on the experimental study, through development and testing. The developed system consists of an electronic card, which captures the analog signals of the G.C. head, processes and digitizes, to send a standard computer. The developed software allows processing and reactivation of each study obtained, and the values and curves of them. To validate the system, the same studies are carried out with a G.C. of current generation. This project arises from the continuing need for public and private services in oncology diagnostics and treatments; because at the country level they have few facilities. Currently it applied in the test phase and facilitates access to people from different social strata to the diagnosis of diseases through nuclear medicine. It is possible to reactivate a G.C., through development of A/D interfaces and algorithms for image reconstruction so that it can lead to further developments to have a diagnostic tool that allows reintegrating the equipment to nuclear medicine and to facilitate access diagnosis for low-income patients with endocrine diseases oncology.