TABLE 1:

Comparison of aneurysms treated with adjunctive HydroCoil Embolization System (HES) vs. platinum coils alone

Patient	Aneurysm volume (ml)	% fill total	% fill HES	# HES coils	# platinum coils	#coils/aneurysm	# coils/ml
HES 1	0.063	66	41	1	3	4	63
HES 2	0.042	76	62	1	1	2	48
HES 3	0.029	87	63	1	2	3	103
HES 4	0.174	87	74	4	2	6	34
HES 5	0.063	91	71	2	1	3	48
HES 6	0.113	45	23	1	5	6	53
HES 7	0.094	55	27	1	3	4	43
HES 8	0.167	56	44	2	3	5	30
HES 9	0.092	72	56	2	3	5	54
HES 10	0.026	88	72	1	1	2	77
HES 11	0.059	85	76	2	1	3	51
Mean	0.084	73	55	1.6	2.3	3.9	55
Platinum 1	0.065	34			6	6	92
Platinum 2	0.042	44			7	7	167
Platinum 3	0.034	27			3	3	88
Platinum 4	0.031	48			5	5	161
Platinum 5	0.092	18			4	4	43
Platinum 6	0.079	42			4	4	51
Platinum 7	0.113	31			6	6	53
Platinum 8	0.236	23			4	4	17
Platinum 9	0.065	22			4	4	62
Platinum 10	0.079	21			5	5	63
Platinum 11	0.038	38			3	3	79
Mean	0.079	32			4.6	4.6	80
P value	.85	.0001				.23	.12

Note.—% fill total, percentage of aneurysm volume filled by embolic devices; % fill HES, percentage of aneurysm volume filled by HES coils; # coils/mL, number of coils per milliliter of aneurysm volume.