Table 2:

Distribution of collateral score for CTA and DSA in all patients^{^a}

CTA CS	DSA CS				Total
CTA CS	Absent (0)	Poor (1)	Moderate (2)	Good (3)	Total
Absent (0)	2	1	0	0	3
Poor (1)	4	3	2	1	10
Moderate (2)	5	8	4	3	20
Good (3)	1	5	4	2	12
Total	12	17	10	6	45

↵a The score corresponding with the relevant category is given in brackets.