Duplex Ultrasound waveform changes
Duplex Ultrasound Doppler waveform changes.peripheral arterial triplex ultrasound Aorta innominate subclavian vein axillary artery brachial artery radial/ulnar veins palmar arch Common iliac artery External iliac artery Common femoral artery Profunda femoris artery Superficial femoral artery Popliteal artery Tibio-peroneal trunk Posterior tibial artery Anterior tibial artery Peroneal artery Dorsalis pedis artery Angle Color Gain Doppler gain PRF BOX(size,direction) steering Sample volume Gate size,Site of sample Base line Velocity scale Depth Wall filter Settings appropriate for specific examinations assigned by set-up/application keys Focus triphasic waveform Systolic Acceleration time spectral window laminar flow Color Doppler peripheral arterial disease Causes of leg pain ARTERIAL OCCLUSIVE DISEASE CAUSES Classification of vasculitis Biphasic waveform flow monophasic waveform flow bidirectional flow Loss of third and then second phase of the wave¬form Increased acceleration time (rapid rise of systolic deflection) Widening of the ystolic complex (5-Spectral broadening) Damping of the waveform Spectral broadening fill in spectral windowe Loss of sharpness of spectrum(irregular) Turbulance aliasing Rounding of PSV tip Absent flow in occlusion rising of PSV reverse flow opposite systole rapid fall of systolic deflection rising of end diastolic velocity Active Hyperemia postoperative vasospasm limb ischemia peripheral arterial triplex ultrasound waveform change peripheral arterial triplex ultrasound arterial stenosis ,occlusion peripheral arterial triplex ultrasound vasculitis inflamed arteries (arteritis) macaroni sign Takayasu’s arteritis Giant cell arteritis Temporal artery Giant cell arteritis polyarteritis nodosa Kawasaki progressive systemic sclerosis Buerger disease Thromboangiitis obliterans (Buerger’s disease) Ormond's Disease peripheral arterial triplex ultrasound hand,foot Triplex Raynaud Phenomenon secondary raynaud's phenomenon BAKER CYST Blind ended channels bypass graft surveillance lerich arterial steal syndrome Complex Regional Pain Syndrome dialysis arteriovenous fistula Cystic Adventitial Disease
