Authors' qualifications in IJS

patent vessels. 3. The authors state that the infra-popliteal region evaluation was not included in their study. The importance of assessing distal run-off in arterial occlusive disease is crucial for prognostic purposes in addition to strategic planning of revascularization procedures. Although the most difficult portion of a Doppler evaluation, it needs to be performed with great patience, also making use of additional measures like dependency of limb and power Doppler. 4. For rapid screening purposes, common femoral artery velocity and spectral waveform have been considered for indirect assessment of severity of aorto-iliac inflow disease. A peak systolic velocity of less than 45 cm/ s with a monophasic waveform is highly predictive of ipsilateral iliac artery occlusion. Post-exercise duplex scanning has also been suggested to elicit a pressure decrease across a stenotic segment and improve the diagnostic utility of femoral Doppler scanning to estimate aorto-iliac disease.