What factor contributes most to a veins ability to collapse?

Which of the following  formulas will tell you the Accuracy of a test?

While performing venous mapping using a transverse view, the great saphenous vein appears elliptical. What is the most likely cause for this appearance?

Which of the following is the best definition of sensitivity?

Which is the best definition of the gold standard?

What is referred to as an effort thrombosis usually secondary to repetitive movements?

Which exam uses air-filled, polyvinyl cuff, which surrounds the calf and functions as a sensing device to detect calf volume changes?

Which of the following criteria describes this post renal transplant biopsy complication?  

The vein of Giacomini extends from the small saphenous vein to which vein?

The right and left innominate veins unite to form the _______.