Group with SPD (n=31) Group w/o SPD (n=50) P value  Variable A  (with and without other variables ) 24 5 <0.001  Variable B  (with and without other variables ) 10 3 <0.01  Variable C (with and without other variables ) 13 2 <0.01   Variable A+B   Variable A+C  9 12 0 0 <0.001 <0.001   Variable A only  (without combination with other variables ) 3 5 >0.5   Variable B or C only (without combination with other variables ) 2 5 >0.5

Variable A: The position of micro-catheter tip showed difference in the angiograms for the TC-99m MAA study and Y-90 treatment Variable B: A bifurcation is present near the catheter tip Variable C: Small arterial branch is present near the catheter tip

Table 2: Comparison of three variables (singly and in combination) between the group with and without SPD.