Tae Kim1, Seong-Gi Kim1
1Radiology,
Spatial
and temporal responses in arterial (CBVa) and total blood volume (CBVt) were
measured in the same animals. Cortical depth profile analysis of ΔCBVa
and ΔCBVt was performed to examine spatial specificity. The highest
signal changes were detected at the middle of cortex in both ΔCBVa and
ΔCBVa, and spatial specificity to the middle of the cortex appears to
improve with time for both parameters. The venous blood volume response (ΔCBVv)
was calculated by subtracting ΔCBVa from ΔCBVt. Rapid initial
increases were obtained for CBVa, while slow prolonged increases were
observed for CBVv.