RESUMO
Resumen El Centro de Protección e Higiene de las Radiaciones fue fundado en 1985 para sustentar la aplicación segura de las tecnologías nucleares en Cuba. En la actualidad la institución es considerada como una referencia nacional y regional en materia de seguridad radiológica, gracias a una sólida estrategia institucional que aporta de manera sostenida soluciones a problemas prioritarios del país. Este trabajo presenta una reseña de los principales resultados del centro hasta la fecha.
Abstract The Center for Radiation Protection and Hygiene was founded in 1985 to support the safe application of nuclear technologies in Cuba. Nowdays, the institution is considered as a national and regional reference for radiation protection , thanks to the comprehensive institutional strategy that support the solutions of the problems with priority in the country. The paper presents the overview about the main results of the center up today.
RESUMO
El trabajo muestra los intervalos de monitoreo que se pueden utilizar en el Laboratorio de Contaminación Interna del Centro de Protección e Higiene de las Radiaciones para medir directamente en la glándula tiroides los radionúclidos 
y 
. Se emplearon dos sistemas de medición, uno con un detector de centelleo y otro con un detector Phoswich. Ambos detectores se ubicaron dentro de una cámara de bajo fondo de 2.5 x 2.5 x 2.5 m de dimensión recubierta con 15 cm de acero, 3 mm de plomo, 1.8 mm de estaño, y 1.5 mm de cobre. Se calculó la actividad mínima detectable para cada sistema y en función de esta se determinaron los intervalos de monitoreo aplicables, de forma tal que una incorporación correspondiente al 5 % del límite anual de incorporación se pueda detectar. Se obtuvo que para el , todos los intervalos evaluados (120, 90, 60, 30, 14, y 7 días) se pueden utilizar en el monitoreo con ambos sistemas. En el caso del radionúclido , con la instalación del detector de centelleo solo se pueden aplicar los intervalos de 120, 90, y 60 días, y para la instalación con el Phoswich, todos los evaluados.
This paper shows the monitoring intervals that can be used in the Internal Contamination Laboratory of the Center for Radiation Protection and Hygiene for direct measurement of the radionuclides I-125 and I-129 in the thyroid gland. Two measuring systems were used, one of them with a scintillation detector and the other one with a Phoswich detector. Both detectors were placed inside a low background shielding chamber (2.5 x 2.5 x 2.5 m) coated with 15 cm of steel, 3 mm of lead, 1.8 mm of tin and 1.5 mm of copper. The minimum detectable activity for each system was calculated, and based on this, the applicable monitoring intervals were determined, so that an intake corresponding to 5 % of the Annual Intake Limit can be detected. The results showed that for the radionuclide I-125 all the intervals tested (120, 90, 60, 30, 14 and 7 days) can be used in monitoring both systems. In the case of the radionuclide I-129, only the intervals of 120, 90 and 60 days can be implemented by using the scintillation detector whereas for the Phoswich detector, all the tested intervals can be used.
RESUMO
The presence of caretakers/comforters during nuclear medicine examinations is relatively common. These caretakers receive higher doses than the general public, who receive only environmental/background exposure. The aim of this research was to know about the doses received by two significant groups of caretakers: comforters of cancer patients (Group I) and mothers of small children (Group II). The patients were scheduled to undergo two different diagnostic studies: Inmuno-Scintigraphy using a monoclonal antibody bound to (99m)Tc (for adults) and Renal Scintigraphy using (99m)Tc-dimercaptosuccinic acid (for children). The average effective doses were 0.27 and 0.29 mSv for Groups I and II, respectively. Additionally, environmental monitoring was performed in the waiting room for injected patients (Room I) and inside the procedure room (Room II). Equivalent environmental doses of 0.28 and 0.24 mSv for Rooms 1 and II, respectively, were found, which are similar to values reported by other authors.
