Axial CT image in an 80-year-old female with fluctuating GCS. In which vascular territory is an infarct seen? 

A 65-year-old patient presented with several months history of headaches and progressive cognitive decline. Based on only these MR images, what is the most likely diagnosis?

Which of the following statements is true of Moyamoya vasculopathy?

Which sequence parameter is required in time-of-flight magnetic resonance angiography (TOF MRA)?

In phase contrast MR angiography (PC MRA), blood flowing at 50cm/s through a slice exhibits 180 degrees of phase change after being exposed to the bipolar phase gradients. What is the velocity encoding (VENC) value that has been used in this sequence?

Which combination of sequence parameters is usually best for contrast enhanced MR angiography (CE MRA)?

Amplification of signal generated from ultrasound echoes returning from deeper tissues is known as what?

Which change will result in a decrease in Doppler shift measured by the transducer?

Which of the following will increase the maximum velocity a pulse wave Doppler machine is able to accurately detect?

Which of the following parameters can NOT be assessed on an arterial spectral waveform in a healthy patient?

Which of the following ultrasound modes has the shortest spatial pulse length (best axial resolution)?

Which artery is considered the main supply of blood to the femoral head and is important in the context of proximal femoral fractures?

How do direct and indirect hernias differ with respect to vessel displacement?

Which of the following arteries is a functional branch of the anterior division of the internal iliac artery in an adult female?

A 40-year-old man with poor urinary stream. Regarding the retrograde urethrogram findings, what is the most probable cause of the urethral stricture in this patient?

An elderly man presented with a mild headache and is assessed with brain MRI, an axial SWI image is shown. What is the most likely diagnosis?

This infarct corresponds to which vascular territory? 

A 70-year-old woman presents with 3 days of confusion and is assessed with the MRI shown. What is the most likely diagnosis?

This is an MRI study of the abdomen and pelvis in a pregnant woman. On this axial gradient echo sequence image, what are the paired right retroperitoneal structures?

Which type of spinal arteriovenous malformation (AVM) is shown on this sagittal T2 image?