Quantifying Cerebellum Grey Matter and White Matter Perfusion Using Pulsed Arterial Spin Labeling

Table 1

Cerebellum CBF (mL/100 g/min) measured by FAIR ASST and PICORE∗.

Subject number	FAIR ASST			PICORE
	CBFGM	CBFWM	CBFGM/CBFWM	CBFGM	CBFWM	CBFGM/CBFWM
1	42.58	29.56	1.44	41.97	33.5	1.25
2	45.07	28.63	1.57	44.47	28.89	1.54
3	37.89	20.48	1.85	30.28	19.04	1.59
4	41.82	26.62	1.57	33.59	14.71	2.28
5	51.57	32.53	1.59	51.45	22.51	2.29
Mean	43.78∗	27.56∗	1.60∗	40.35∗	23.73∗	1.79∗
S.D.	5.06	4.49	0.15	8.52	7.53	0.47
C.V. (%)	11.6%	16.3%	9.4%	21.1%	31.7%	26.3%

∗CBF_GM represents grey matter CBF; CBF_WM: white matter CBF; C.V.: coefficient of variance; and S.D.: standard deviation. No significant differences were found between the mean cerebellum CBF values obtained with FAIR ASST and PICORE, but the C.V. for FAIR ASST is about half that for PICORE.