The ability of a test to exclude venous disease when no disease is present.  It is calculated by dividing the number of true negative noninvasive studies by the number of all negative studies by the gold standard.  

A 64 year old diabetic male presents to the vascular laboratory with a history of left extremity rest pain, bilateral calf claudication after walking 150 feet, ulcerations on the great toes, and an ankle systolic pressure of 300mmHg. Both brachial pressures are 140mmHg.  These findings most strongly suggest which of the following?

Which of the following would not cause a vibration or a thrill?

What percentage of patients with DVT will develop venous insufficiency in 5-10 years?

Which imaging procedure is historically used for confirmation of visceral artery stenosis or occlusion and demonstration of the extent of collateralization?

What does an ABI of .5 or less mean 

Tardus parvus Doppler spectral waveforms within the renal parenchyma indicate which:

Which best defines stroke?

What effect does normal exercise have on blood flow?

What are numbers 1 & 2 pointing to in this image (respectively)?