Caren van Roekel

219 The efficacy of coil-embolization in radioembolization TABLE 2. Quantitative analysis Activity ratios Success rate of redistribution Tumor Segment Tumor Segment 0.9 cutoff 0.8 cutoff 0.7 cutoff 0.9 cutoff 0.8 cutoff 0.7 cutoff All patients 0.80 (0.19-1.62) 0.88 (0.26-2.05) 6/21 (29%) 9/21 (43%) 12/21 (57%) 15/32 (47%) 20/32 (63%) 22/32 (69%) Embolized artery MHA/Segment IV artery 0.80 (0.19-1.62) 0.89 (0.42-2.05) 4/13 (31%) 6/13 (46%) 9/13 (69%) 10/20 (50%) 13/20 (65%) 14/20 (70%) aLHA/rLHA 0.50 (0.32-1.41) 0.82 (0.37-1.42) 2/5 (40%) 2/5 (40%) 2/5 (40%) 4/8 (50%) 4/8 (50%) 5/8 (64%) Parasitized artery 0.49 (0.33-0.84) 0.85 (0.26- 0.93) 0/3 1/3 (33%) 1/3 (33%) 1/4 (25%) 3/4 (75%) 3/4 (75%) Primary neoplasm CRC 0.83 (0.40-1.41) 0.97 (0.26-1.47) 3/11 (27%) 6/11 (55%) 8/11 (72%) 7/14 (50%) 10/14 (71%) 11/14 (79%) NET 0.49 (0.18-0.80) 0.72 (0.53-1.45) 0/5 0/5 0/5 3/9 (33%) 4/9 (44%) 5/9 (56%) Medians of the activity ratios are displayed with the range between parentheses. The number of successful redistributions was calculated using cutoff values based on activity concentration decreases of 10, 20 and 30%. MHA = middle hepatic artery, aLHA = accessory left hepatic artery, rLHA = replaced left hepatic artery, CRC = Colorectal carcinoma, NET = Neuroendocrine tumor. 8