RESUMO
Heat stroke (HS) is a life-threatening condition characterized by severe hyperthermia associated with central nervous system abnormalities. We present two interesting cases of HS with symmetric lesions in the dentate nuclei and cerebellar peduncles. Typical MRI and (1)H-MRS features including follow-up studies are illustrated.
Assuntos
Cerebelo/patologia , Golpe de Calor/patologia , Imageamento por Ressonância Magnética , Espectroscopia de Ressonância Magnética , Adulto , Idoso , Núcleos Cerebelares/patologia , Feminino , Seguimentos , Humanos , MasculinoRESUMO
To explore the application value of cerebellar diffusion tensor imaging (DTI) in patients after heat stroke (HS). Eleven patients after HS with a score of 3-9 in Glasgow Coma Scale (GCS) and seven age-matched healthy volunteers were selected to undergo MR examinations during the same hot summer. The MR studies including DTI were performed with a 1.5 T scanner. Fractional anisotropy (FA) values of normal-appearing cerebellar white and gray matter were measured and the differences between the two groups were evaluated with Mann-Whitney U test. The FA value of normal-appearing cerebellar white matter in patients after HS was found to be decreased compared to normal control subjects (652.5 ± 86.1 vs 769.5 ± 58.4, p = 0.025). The FA value of normal-appearing cerebellar gray matter in patients after HS was found to be decreased compared to normal control subjects (158.8 ± 27.9 vs 187.5 ± 15.8, p = 0.040). Neural damage of the cerebellum induced by HS may be effectively evaluated by DTI with the decrease of FA value in normal-appearing cerebellum structures.
