抄録
The internal blood flow of an aneurysm changes temporally and spatially according to the heartbeat and has a complex form; accordingly, time series volumetric velocity measurements are required. In the present study, we have developed a shadow imaged streak PTV system which enables time series volumetric velocity measurement with only two cameras. Applying this system to two types of aneurysm models in a cube measurement area, we have obtained three dimensional velocity streak results. The measuring volume size was 7.0 mm × 6.9 mm × 6.8 mm and velocity fluctuation was from 0.5 mm/s to 20.0 mm/s. Moreover, this system could accurately measure the small and large eddy changing spatially and temporally. From these results, it is concluded that the shadow imaged streak stereo PTV is applicable to milli-scale flows like an aneurysm.
