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  • Title: [Usefulness of FDG-PET in the diagnosis of patients with chronic severe brain injury].
    Author: de la Cueva L, Noé E, López-Aznar D, Ferri J, Sopena R, Martínez C, Chirivella J, Abreu P, Uruburu E.
    Journal: Rev Esp Med Nucl; 2006; 25(2):89-97. PubMed ID: 16759614.
    Abstract:
    INTRODUCTION: To describe the changes in cerebral glucose metabolism after a severe traumatic brain injury (TBI), at the beginning of the rehabilitation, to analyze its diagnostic agreement with morphologic neuroimaging technologies (MR/CT) and to correlate the neuroimaging findings with the intensity of the TBI and the functional ability for daily activities. MATERIAL AND METHODS: Prospective study of 55 patients who had sustained a severe TBI (GCS < or = 8) by means of 18F-FDG PET and MR/CT. The agreement between anatomical and functional neuroimagen studies was measured. Correlation between cerebral injury severity in neuroimaging, clinical functional evaluation assessed with Barthel-M Index and GCS were tested. RESULTS: 100 % of patients showed changes in cerebral metabolism, being the thalamus the area more frequently affected. 60 % of patients showed injuries in MR/CT, more frequently in frontal areas. The agreement for the diagnosis of pathology between morphologic and functional neuroimagen was very low. The TBI severity showed significant statistical correlation with the degree of cerebral metabolism and the level of disability. CONCLUSIONS: 18F-FDG PET allows to know the cerebral glucose metabolism at the beginning of the rehabilitation, being correlated with the TBI severity and the level of patient's disability for daily activities. 18F-FDG PET diagnoses major number of injuries that traditional neuroimaging and demonstrates a high thalamic vulnerability, with injuries in up to 76 % of patients with severe TBI.
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