[Three dimensional digital subtraction angiography in volume embolization ratio measurement of densely packing experimental aneurysms].
OBJECTIVE
To calculate the volume embolization ratio of densely packing experimental aneurysms by three dimensional digital subtraction angiography (3D-DSA).


METHODS
Six experimental crotch aneurysms were created microsurgically in the common carotid artery of white rabbits. Two weeks later, each aneurysm's volume was measured with 3D-DSA surface shaded display(SSD) and the correction of lacteprene balloon calibration method. In the same time, the aneurysms were densely packed with electric detachable coils. The volume of coils that were used in each aneurysm was calculated separately. The ratio of coils volume and aneurysm volume was the volume embolization ratio (VER).


RESULTS
The aneurysms volumes measured by 3D DSA SSD ranged from 0.037 to 0.087 ml. The VER ranged from 23.5% to 32.5% (average 27.4%).


CONCLUSIONS
The minimum VER of densely packing experimental crotch aneurysms with electronic detachable coils was 23.5%.
Zhang
Xiaolong
X
Department of Radiology, Huashan Hospital, Fudan University, Shanghai 200040  China.
Ling
Feng
F
Shen
Tianzhen
T
Miu
Zhongrong
Z
Geng
Daoying
D
Huang
Xianglong
X
Feng
Xiaoyuan
X
D015901:Angiography, Digital Subtraction; D000818:Animals; D004621:Embolization, Therapeutic / Q000379:methods*; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000628:therapy*; D011817:Rabbits