Cci - Rvs Exam Prep Updated Questions And Answers (Verified Answers)

163. The Doppler diagnostic criterion that is most important for calling greater than 80% stenosis is: a) mean or time-average velocity b) peak-systolic velocity c) end-diastolic velocity d) minimum mid-diastolic average velocity e) percent window reduction {Ans: c) end-diastolic velocity}What is the most common anomaly of the circle of Willis? {Ans: Absence or hypoplasia of one or both of the communicating arteries}This vessel courses along the medial aspect of the psoas muscle: a) femoral artery b) internal iliac artery c) external iliac artery d) inferior mesenteric artery e) none of the above {Ans: c) external iliac artery}Is the fibula the larger or smaller bone in the lower leg? {Ans: smaller (tibia is larger bone)}Which of the following is an anterior circulation symptom? a) ataxia b) drop attack c) syncope d) binocular visual disturbances e) facial asymmetry {Ans: e) facial asymmetry}184. Major complications of cerebrovascular angiography occur in approximately: a) 10% of patients b) 1% of patients c) 0.1% of patients d) 0.01% of patients e) >20% of patients {Ans: b) 1% of patients}A left arm blood pressure that is 40 mmHg lower than the right can be the result of any of the following