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Budd-Chiari syndrome is caused by obstruction of which of the following vessels?

During the last 2 months, your department has compared 94 internal carotid arteries evaluated by carotid duplex with angiography. The results showed 50 vessels had a hemodynamically significant lesion by either method. 40 vessels had no lesion by either method. In 1 case, the noninvasive ultrasound was negative, but the angiogram showed a 70-99% diameter reduction.  In 3 cases, the noninvasive studies were consistent with a >50% diameter reduction, but the invasive study was read as normal. How accurate is your diagnostic facility in performing carotid duplex?

What is the most likely ultrasound finding in acute superficial phlebitis?

Which of the following is considered the most important diagnostic indicator during venous duplex imaging?

Which patient population is most commonly affected by Buerger’s disease?

Which of the following is the most appropriate initial treatment option for a patient diagnosed with chronic venous insufficiency?

Which of the following is not a sonographic finding of an arterial occlusion?

When determining the severity of carotid artery stenosis, what does the European Carotid Surgery Trial (ECST) use as a reference point?

A 68-year-old male presents with dizziness and left arm weakness during exertion. Blood pressure is 30 mmHg lower in the left arm compared to the right. On Doppler ultrasound, the left vertebral artery demonstrates a “bunny rabbit” waveform pattern with late systolic flow reversal. What is the most likely diagnosis?

Proximal to an arterial occlusion, spectral waveforms will display which of the following components?