Abstract

LUZ, Eara de Souza; CANEVARO, Lucía Viviana; FERREIRA, Nadya Maria Prado Damasceno  and  CAMPOS, Julio Eduardo. The relevance of quality control in services of hemodynamics and interventional cardiology. Radiol Bras [online]. 2007, vol.40, n.1, pp. 27-31. ISSN 0100-3984.  http://dx.doi.org/10.1590/S0100-39842007000100008.

OBJECTIVE: To evaluate the performance and quality of images of a x-ray equipment utilized in interventional radiology, by means of some tests of quality control. MATERIALS AND METHODS: Measurements have been performed on a Philips Integris H3000 x-ray equipment dedicated to interventional procedures in the hemodynamics laboratory of a hospital in Rio de Janeiro, RJ, Brazil. Leeds test objects have been used to evaluate the image quality. Dosimetric measurements have been developed with a Radcal 9015 dosimetric system. RESULTS: In high and normal modes, the air kerma rates have been different from the expected results. In some cases, values have not been affected by the use of different magnification modes. The images quality evaluation has showed different results from those recommended by technical standards. This could lead to the acquisition of poor quality images besides an increase in the radiation exposure levels for both patients and staff. CONCLUSION: The results have shown the importance of a periodical quality control testing, allowing the monitoring of the x-ray equipment performance and evaluation of radiation exposure levels for both patients and staff. The results suggest the need of a revision of the x-ray images acquisition system.

Keywords : Interventional radiology; Hemodynamics; Quality control.