Right vertebral artery; Right vertebral artery

Basal artery ba; Basilar artery

Right middle cerebral artery; Right middle cerebral artery

Left vertebral artery; Left vertebral artery

Left middle cerebral artery; Left middle cerebral artery

Pulsation index

drag index

Peak speed peak

Average speed average

Diastolic blood flow velocity Dias (this is uncertain)

Ratio of systolic blood pressure to diastolic blood pressure

Bandwidth index SBI

Stenosis index STI