Neurology Q 20

A 49-year-old-man is evaluated 1 day after having an episode of right arm weakness without pain that lasted 5 minutes. He is now asymptomatic. The patient has type 2 diabetes mellitus and dyslipidemia. Medications are aspirin, metformin, and atorvastatin.

On physical examination, blood pressure is 126/68 mm Hg, pulse rate is 86/min and regular, and respiration rate is 12/min. No carotid bruits or cardiac murmurs are heard on cardiac auscultation. All other physical examination findings are normal.

An electrocardiogram shows normal sinus rhythm with no ST-segment or T-wave changes.

Which of the following is the most appropriate initial imaging test?

A Carotid duplex ultrasonography

B CT angiography of the neck

C MRI of the brain

D Transesophageal echocardiography

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