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Internal carotid velocity measurements in children with cerebrovascular disease
Insights
Doppler ultrasound can reliably diagnose childhood cerebrovascular disease by measuring internal carotid artery flow velocity. This noninvasive method identified significantly lower blood flow in conditions like moyamoya disease and artery occlusions.
Area of Science:
- Pediatric Neurology
- Vascular Medicine
- Diagnostic Imaging
Background:
- Cerebrovascular diseases in children pose diagnostic challenges.
- Noninvasive methods for assessing cerebral blood flow are crucial for early detection and management.
Purpose of the Study:
- To evaluate the utility of Doppler ultrasound in measuring internal carotid artery flow velocity for diagnosing cerebrovascular disease in pediatric patients.
- To compare flow velocity indices between children with various cerebrovascular conditions and healthy controls.
Main Methods:
- Doppler ultrasound was used to measure average maximal blood velocity (A/L) and end-diastolic blood velocity (d) in the internal carotid arteries of 32 children.
- Patients included those with moyamoya disease, internal carotid artery occlusion, middle cerebral artery occlusion, subarachnoid hemorrhage, and basilar artery occlusion.
- Velocity measurements were compared to those of normal children.
Main Results:
- Significantly lower mean A/L and d values were observed in children with moyamoya disease compared to controls.
- Children with internal carotid artery occlusion and middle cerebral artery occlusion also showed significantly reduced A/L and d on the affected side.
- Reduced velocity indices were noted in subarachnoid hemorrhage cases, while basilar artery occlusion showed similar values to normal children.
Conclusions:
- Doppler ultrasound assessment of internal carotid artery flow velocity is a reliable noninvasive tool for diagnosing pediatric cerebrovascular disease.
- Specific patterns of reduced flow velocity can help differentiate between various cerebrovascular conditions in children.
Abstract:
Internal carotid artery flow velocity was evaluated by the Doppler ultrasound method in 32 children with cerebrovascular disease. The average maximal blood velocity (A/L) and end-diastolic blood velocity (d) were compared with each other as indices of blood flow velocity. The right and left mean A/L and d of moyamoya disease were significantly lower than those observed in normal children. The A/L and d of the affected side both in internal carotid artery occlusion and in middle cerebral artery occlusion were also significantly low. In the subarachnoid hemorrhage after rupture, these values were significantly low. In basilar artery occlusion, these values were similar to those in normal children. The results of this study indicate that Doppler ultrasound assessment of internal carotid flow velocity provides noninvasive reliable information for the diagnosis of cerebrovascular disease in childhood.