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Table 2: CNR of related vessels^{^a}
Label Duration (ms) Feeding Artery Draining Vein
4D-PACK 4D-S-PACK P Value 4D-PACK 4D-S-PACK P Value
100 13.6 (SD, 12.1) 13.7 (SD, 12.6) .88 4.4 (SD, 2.6) 5.0 (SD, 3.2) .19
200 26.0 (SD, 22.3) 23.1 (SD, 18.5 .18 7.5 (SD, 6.1) 6.8 (SD, 5.1) .41
400 41.1 (SD, 26.4) 15.4 (SD, 13.0) 
500 37.8 (SD, 25.9) 16.3 (SD, 14.0) 
600 49.9 (SD, 24.4) 24.7 (SD, 19.6) 
800 53.5 (SD, 24.6) 47.1 (SD, 24.8) .02 33.1 (SD, 23.9) 26.0 (SD, 18.7) .02
1200 64.2 (SD, 21.9) 57.2 (SD, 22.1) .03 54.7 (SD, 24.0) 39.6 (SD, 21.4) <.001
1600 66.7 (SD, 21.1) 57.8 (SD, 21.5) .006 64.2 (SD, 23.1) 45.6 (SD, 20.4) <.001
2000 59.2 (SD, 21.4) 47.3 (SD, 20.1) 
2200 68.1 (SD, 21.0) 69.7 (SD, 22.4) 
Note:—4D-PACK indicates 4D-MR angiography based on pseudo-continuous arterial spin labeling combined with CENTRA-keyhole and view-sharing; 4D-S-PACK, 4D-MR angiography based on super-selective pCASL with CENTRA-keyhole and view-sharing.
↵a Data are expressed as mean values.