525 医療画像からの直接血流解析システム(S11-2 イメージベースドモデリングの展開(2),S11 イメージベースドモデリングの展開)

概要

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Conventional blood flow simulators needed to generate meshes. So, to generate ideal meshes, excellent ability in mesh generation itself was essential, at the same time, detailed knowledge in flow analysis was important. These had been reasons why the flow simulation was not widely used in medical field. We developed a new blood flow simulator without mesh generation. Our system used voxel model as simulation. The voxel models were directly made from grey scale medical modalities such as CT-Angiography, MR-Imaging or 3D-Angiography. We applied our system to the model of coil embolization for brain aneurysm. In coil embolization model, flow pattern change in aneurysm sac were calculated giving various amount of coils. Increasing volume embolization ratio, flow velocity in the sac was decreased. Our simulator can work stably even extremely complex structure without detailed knowledge on the computational fluid dynamics nor mesh generation.
社団法人日本機械学会の論文
2006-09-15