Fig. 16.1 (a) Spencer technologies headgear that is utilized for securing the transcranial Doppler probe for periprocedural imaging. The torque device in the front is for tightening the harness depending…
Fig. 46.1 CEAP classification system The CEAP clinical classification score can then be more precisely defined by Duplex ultrasound (DU) imaging of the superficial, deep, and perforator veins in the…
Fig. 39.1 Calf venous pressure–volume curve . Pressure in the normal limb is low (A) but is elevated in the limb with acute deep venous thrombosis (A′). Inflating the thigh…
Fig. 22.1 Normal arterial velocity tracing (multiphasic). (a = systolic component; b = early diastolic component; c = late diastolic component) Therefore, there are several types of Doppler velocimetry: 1….
Variable Mean Median SD Min. Max. P value Celiac PSV ≥50 native stenosis ≥50 stenting stenosis 379 447 335 428 149.7 158.4 52 205 880 903 0.0670 Celiac EDV ≥50…
Fig. 55.1 Image demonstrating placement of the sensor over the right foot to measure the tcpO2 skin level TcpO2 monitoring is completely noninvasive and atraumatic. It is recommended that sensor…
Fig. 28.1 Low-velocity monophasic flow in the common femoral artery distal to the occluded common iliac artery (PSV 31.4 cm/s, EDV 10.1 cm/s) Patency and obstruction of the iliac arteries…
Fig. 43.1 Photoplethysmographic waveforms (PPG) . (a) Normal waveforms. (b) Borderline abnormal with partial attenuation of waveforms. (c) Abnormal with complete flattening of the waveforms Direct Testing with Duplex Ultrasound…
Fig. 32.1 Bulging upper extremity collateral veins as a result of central stenosis Additional Examination Further upper extremity examination includes a neurologic exam in order to document the presence of…
Fig. 27.1 (a) Duplex ultrasound demonstrating moderate stenosis with an elevated peak systolic velocity of 200 cm/s in the midportion of SFA stent. (b) Duplex ultrasound demonstrating high-grade stenosis with…
