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- W2041405463 abstract "Neuroimaging with single photon emission computed tomography (SPECT) using the cerebral blood flow tracer 99Tc(m)-HMPAO has been used to study acute functional alterations after head injury and residual abnormalities at six month follow up in 32 patients. Comparison has been made with anatomical abnormalities defined acutely with CT and on follow up with MRI. SPECT showed slightly more abnormalities than CT in the acute phase (49 regions of abnormally low tracer uptake on SPECT and 45 lesions on CT). Twenty two of the acute SPECT abnormalities were in normal regions on CT. At follow up MRI showed more abnormalities than SPECT (30 on SPECT and 48 on MRI). Ten of the SPECT deficits were in regions with normal MRI. Comparison of the intensity of late and early SPECT deficits showed that only four early deficits deteriorated whereas 28 improved. Only five of 27 lesions seen on both acute SPECT and CT resolved compared with 16 of 22 lesions seen on SPECT but not on CT. Regions of abnormally high tracer uptake were detected in the acute stage in five of the patients. No high focal uptake was evident on follow up. Ten patients with a residual SPECT abnormality and eight with residual MRI lesions were graded clinically in the upper band of good recovery." @default.
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- W2041405463 date "1997-06-01" @default.
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- W2041405463 title "SPECT, CT, and MRI in head injury: acute abnormalities followed up at six months." @default.
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- W2041405463 doi "https://doi.org/10.1136/jnnp.62.6.633" @default.
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