Table 3:

N/D ratios of aneurysms as measured with DSA and MDCTA

N/D Ratio	Reader 1		Reader 2
	DSA	MDCTA	DSA	MDCTA
<1/3	23	20	22	20
1/3–2/3	50	51	49	49
>2/3	20	22	22	24
Total	93	93	93	93

Note:–N/D indicates neck-to-dome ratio; DSA, digital subtraction angiography; MDCTA, multidetector row CT angiography.