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Regional cerebral blood flow with age: changes in rCBF in childhood
1Division of Neurosurgery, Tohoku University School of Medicine, Sendai, Japan.
Insights
Cerebral blood flow (CBF) in children
Area of Science:
- Neuroscience
- Pediatric Physiology
- Cerebrovascular Research
Background:
- Understanding age-related changes in cerebral blood flow (CBF) is crucial for pediatric neuroscience.
- Previous studies have primarily focused on adult CBF patterns, with limited data on childhood development.
- Cerebral blood flow dynamics undergo significant transformations from infancy through adolescence.
Purpose of the Study:
- To investigate age-dependent alterations in cerebral blood flow (CBF) and regional cerebral blood flow (rCBF) across the entire lifespan, with a focus on childhood.
- To compare CBF and rCBF patterns in children with those observed in adults.
- To identify developmental trajectories of cerebral perfusion from childhood to adulthood.
Main Methods:
- Utilizing quantitative imaging techniques to measure global and regional cerebral blood flow.
- Analyzing CBF data in both grey matter and white matter across diverse age groups.
- Mapping the spatial distribution of rCBF and assessing frontal lobe dominance.
- Longitudinal or cross-sectional analysis of CBF parameters in relation to chronological age.
Main Results:
- Children exhibit significantly higher grey matter cerebral blood flow (CBF) compared to adults, with a negative correlation between CBF and age.
- White matter blood flow shows minimal age-related decline during childhood.
- The typical adult pattern of frontal lobe dominance in regional CBF (rCBF) is not observed in young children.
- By approximately 10 years of age, the rCBF pattern in children closely resembles that of adults.
Conclusions:
- Childhood grey matter CBF is substantially higher than in adults, decreasing with age.
- White matter perfusion remains relatively stable throughout childhood.
- Regional CBF distribution matures significantly during childhood, adopting adult-like patterns by age 10.
- These findings highlight critical developmental changes in brain perfusion during early life.
Abstract:
Changes in cerebral blood flow (CBF) and regional cerebral blood flow (rCBF) throughout the entire age range including childhood were reported. The CBF in grey matter of children was markedly higher than that found in adults and showed a negative correlation with age. In contrast, the blood flow in white matter did not show a notable decrease with age. The regional distribution of CBF in children did not exhibit the frontal lobe dominance typical of adults. The rCBF pattern began to approach that of adults with growth and by 10 yr the rCBF pattern of children was similar to that of adults.