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Regional cerebral blood perfusion in children with hemiplegia: A SPECT study
L Sztriha1, A R al Suhaili, V Prais
1Department of Paediatries, FMHS, UAE University, Al Ain, United Arab Emirates.
Insights
This study investigated cerebral perfusion in children with spastic hemiplegia using SPECT scans. Findings reveal perfusion deficits extending beyond anatomical lesions, suggesting complex patterns in pediatric neurological conditions.
Area of Science:
- Neurology
- Pediatric Neurology
- Neuroradiology
Background:
- Spastic hemiplegia in children can result from diverse etiologies including cerebral palsy, stroke, and traumatic brain injury.
- Understanding the underlying cerebral perfusion abnormalities is crucial for diagnosis and management.
Purpose of the Study:
- To investigate localized and remote cerebral perfusion abnormalities in children with spastic hemiplegia using 99mTc-HMPAO SPECT.
- To correlate perfusion deficits with anatomical lesions identified by CT and explore potential age-related perfusion patterns.
Main Methods:
- Utilized 99mTc-HMPAO SPECT (single-photon emission computed tomography) to assess cerebral blood flow in fourteen children.
- Investigated various etiologies of spastic hemiplegia, including cerebral palsy, stroke, hemiconvulsion-hemiplegia-epilepsy syndrome, and traumatic brain injury.
- Correlated SPECT findings with CT imaging results.
Main Results:
- Hypoperfusion was observed in all patient groups, corresponding to CT-identified abnormalities.
- Perfusion deficits frequently extended beyond the anatomical lesion boundaries, particularly in cases with epileptic discharges.
- Observed ipsilateral and crossed cerebellar diaschisis, as well as diaschisis in cortical and subcortical structures.
- Clinical correlation with the extent of perfusion defects or diaschisis was not definitively established.
Conclusions:
- Cerebral perfusion abnormalities in pediatric spastic hemiplegia are complex and can extend beyond visible anatomical defects.
- SPECT imaging reveals patterns of hypoperfusion and diaschisis that may be age-related.
- Further research is needed to fully elucidate the clinical significance of these perfusion patterns.
Abstract:
Fourteen children with spastic hemiplegia of various etiology: cerebral palsy (seven cases, five with porencephalic cyst); stroke with small deep infarcts (two); hemiconvulsion-hemiplegia-epilepsy syndrome (three); traumatic brain injury (two), were investigated by 99mTc-HMPAO SPECT. Localized and remote perfusion abnormalities were studied. Hypoperfusion corresponding to CT abnormalities was found in each group, but the perfusion deficit extended beyond the boundaries of anatomical defects, most prominently in cases with widespread unilateral epileptic discharges. Ipsilateral cerebellar diaschisis was observed in patients with early cerebral insult (who had porencephalic cyst of pre- or perinatal onset) and crossed cerebellar diaschisis was noted in a patient who sustained traumatic brain injury at a later age. Diaschisis in the overlying cortex, thalamus and basal ganglia was noticed in several cases. Although clinical symptoms or signs could not be unequivocally attributed either to the size of the perfusion defects beyond the boundaries of lesions shown by CT or to the diaschisis, the findings may contribute to reveal age-related abnormal perfusion patterns.