Avaliação da estimativa dos descritores de dose em tomografia multislice de crânio em pacientes submetidos a craniectomia descompressiva

Abstract

The aim of the study was to analyze the dose descriptors of computed tomography examinations of the skull in a group of patients who had severe head trauma and underwent decompression craniectomy. Despite several recommendations to avoid unnecessary radiation exposure, few studies have systematically analyzed the doses applied in this population. The parameters of consecutive skull CT examinations of 14 patients were analyzed retrospectively during the treatment period. Average values of 120 kVp (95% CI of 0.5), 295 mA (95% CI of 5.0), scanning range of 21.7 cm (95% CI of 4.2), DFOV of 24.9 cm (95% CI 1.8), CTDI 67.4 mGy (95% CI 11.7), DLP 1406.3 mGy.cm (95% CI 398.7). In conclusion, the values found in the study were above the recommendations of several guidelines and cause concern for excessive radiological exposure in patients with severe TBI and decompression craniectomy.