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[Brain perfusion in acute infantile hemiplegia studied with single photon emission computed tomography]
Y Tanaka1, Y Nakanishi, S Hamano
1Division of Neurology, Saitama Children's Medical Center.
Insights
This study observed brain perfusion changes in a child with acute infantile hemiplegia. Initially, there was hyperperfusion, followed by hypoperfusion, offering new insights into this condition.
Area of Science:
- Pediatric Neurology
- Neuroimaging
- Epileptology
Background:
- Acute infantile hemiplegia is a neurological disorder characterized by sudden weakness on one side of the body.
- Understanding the underlying pathophysiology, particularly early brain perfusion changes, is crucial for diagnosis and treatment.
Observation:
- Single photon emission computed tomography (SPECT) was used to examine brain perfusion in a 5-month-old infant with acute infantile hemiplegia.
- SPECT imaging was performed during the ictal phase (status epilepticus) and on days 3, 7, and 10 post-ictal.
Findings:
- During the acute ictal stage and day 3 post-ictal, diffuse hyperperfusion was observed in the right hemisphere.
- By days 7 and 10 post-ictal, diffuse hypoperfusion was evident in the same hemisphere.
- This represents the first report of ictal brain perfusion in acute infantile hemiplegia.
Implications:
- The observed hyperperfusion during the ictal phase is a novel finding, as previous studies focused on post-ictal hypoperfusion.
- These dynamic changes in brain perfusion may provide critical clues to the etiology of acute infantile hemiplegia.
- Further research into ictal perfusion patterns could refine diagnostic approaches and therapeutic strategies for this condition.
Abstract:
Sequential examinations of single photon emission computed tomography (SPECT) were performed on a 5-month-old boy with acute infantile hemiplegia from the acute ictal stage. SPECT was performed with technetium-99m-hexamethyl-propylene-amineoxime during the status when the patient had left-hemiconvulsions (status epilepticus) and on the 3rd, 7th and 10th day after the status. During the ictal stage and the 3rd day after the status, diffuse hyperperfusion was revealed in the right hemisphere, while diffuse hypoperfusion was exhibited in the right hemisphere on the 7th and 10th day after the status. Hypoperfusion in the corresponding hemisphere, after the status, has been reported in patients with acute infantile hemiplegia. There has, however, been no report of ictal brain perfusion. The pathogenesis of this hyperperfusion is not clear, but alteration of brain perfusion in this patient, especially in acute phase, may help to elucidate the etiology of acute infantile hemiplegia.