2020 Volume Annual58 Issue Abstract Pages 287
The vein valve disorder causes the varicose and pulmonary enbolism.It is reported that about 9% Japanese people have varicose veins of leg which needs surgical treatment.Therefore, we diagnosed functional characterization of the vein using ultrasound non invasively. And, it is good for prevention of varicose.The venous pressure changes by changing the height of the leg by Bernoulli's theorem, and changes the vein cross section.After we lifted leg and, recorded a cross section change of the vein for 30 seconds by ultrasound echogram.We made a filter for detecting the veinous vessel walls of the great saphenous vein of the recorded echogram and conducted mask processing. Thereby, we measured a vein cross section change semiautomatically.We make indexes to evaluate venous characteristics by using these indexes.Then we approximate expression will examine the relationship between there indexes and the risk factor of varix.
