Table 4:

Interhemispheric differences (values from the left minus values from the right) in centimeters per second and ratios (values from the left side divided by values from the right side) with TCD ultrasonography in 56 children with SCD

Parameters	MCA		ACA		tICA
	L-R	L/R	L-R	L/R	L-R	L/R
VPS
Median	−7 cm/s	0.96	−6 cm/s	0.96	−5 cm/s	0.98
Tolerance interval	−61–36 cm/s	0.70–1.26	−73–41 cm/s	0.61–1.33	−49–36 cm/s	0.70–1.21
VMN
Median	−2 cm/s	0.98	−3 cm/s	0.97	−2 cm/s	0.99
Tolerance interval	−43–33 cm/s	0.72–1.25	−49–38 cm/s	0.62–1.39	−38–34 cm/s	0.69–1.27
VED
Median	2 cm/s	1.02	−2 cm/s	0.98	0 cm/s	1.00
Tolerance interval	−27–30 cm/s	0.76–1.31	−34–21 cm/s	0.67–1.30	−25–28 cm/s	0.69–1.36
PI
Median	−0.05 cm/s	0.93	−0.05 cm/s	0.94	−0.04 cm/s	0.94
Tolerance interval	−0.27–0.18 cm/s	0.66–1.29	−0.35–0.29 cm/s	0.60–2.00	−0.27–0.21 cm/s	0.69–1.29