arteriovenous fistula (AVF) stenosis
Data are collected before and after percutaneous transluminal angiography (PTA) for dialysis patients.
Each sample is labeled as a-b-before.wav or a-b-after.wav and the associated txt, where a is the patient id and b is the location id.
The first position was the arterial-venous junction, and the second point was 3 cm from the first position along the vein.
The distances between the adjacent positions were also about 3 cm.