Precisión y exactitud del calibrador de dosis: capintec crc 12 del laboratorio de radio- farmacia del instituto de medicina nuclear sucre control.

The dose calibrator or activity meter is one of the indispensable tools in the laboratories of Radio - pharmacy of a Nuclear Medicine , to measure the activity of the dose of radiopharmaceuticals prior to administration to the patient, so it is important to provide accurate readings, a very high dose would produce unnecessary radiation exposure to the patient or a very low dose , prolong the acquisition time studies affecting the image quality . The aim of the study was to determine the precision and accuracy of dose calibrator or activimeter Lab Radio- pharmacy. In this work, a retrospective analysis of the results of quality checks performed at Precision and Accuracy Capintec CRC12 dose calibrator was made in a period of 19 years using sealed and certified sources with low , medium and high energies : Ba133 , Cs137 , Co60 and Co57 . The results showed that the lowest value of standard deviation was 0.16 for Ba133 , relative to Co57 5.75 in the control of accuracy . Regarding the control accuracy standard deviation values were also lower for Ba133 0.62 relative to Co57 21.25 . The lower average accuracy was 0.19 for Ba133 regarding Co57 3.09 ; As for accuracy the lowest average was for Cs137 , with a value of 1.20 in relation Ba133 worth 4.27. Being stated that the reliability of activimeter Capintec CRC12 is acceptable during the period analyzed.