an Observational Study Evaluting the Effectiveness and Safety of DKutting LL Noval Scoring Balloon Angioplasty for Vessel Preparation Facilitated by IVUS on the Lower Limb Ischemia Patients With Calcified Lesions

femoral artery stenosis, angioplasty, cutting balloon angioplasty, calcifications, vascular, intravascular imaging device, peripheral artery disease, infrapopliteal arterial occlusive disease, peripheral arterial disease, femoropopliteal artery, infrapopliteal artery, calcified lesions, scoring balloon