MRI MRI Anatomy and Pathology 2

Question 1

The corpus callosum is best evaluated on which MRI plane for assessing callosal agenesis?

Accepted Answer

Sagittal

Answer

The sagittal midline plane provides the best single view of the entire corpus callosum from genu to splenium for assessing agenesis or dysgenesis.

Question 2

Multiple sclerosis (MS) plaques in the brain are classically found in which location on MRI?

Accepted Answer

Periventricular white matter, corpus callosum, and juxtacortical regions

Answer

MS demyelinating plaques characteristically occur in periventricular white matter, corpus callosum (Dawson fingers), juxtacortical, and infratentorial regions.

Question 3

On MRI of the liver, a simple hepatic cyst is expected to show which signal characteristics?

Accepted Answer

T1 low, T2 high, no enhancement

Answer

Simple hepatic cysts have low T1 signal, very high T2 signal due to pure fluid content, and show no contrast enhancement.

Question 4

Which ligament of the knee is best seen on sagittal MRI images and connects the posterior femur to the anterior tibia?

Accepted Answer

Anterior cruciate ligament

Answer

The anterior cruciate ligament (ACL) runs from the posterior lateral femoral condyle to the anterior tibial spine and is best evaluated on sagittal MRI.

Question 5

Bilateral symmetric T2 hyperintensity in the basal ganglia of a child is most associated with which condition?

Accepted Answer

Wilson's disease or metabolic disorder

Answer

Bilateral symmetric basal ganglia T2 signal abnormality in a child raises concern for metabolic disorders such as Wilson's disease, mitochondrial disease, or toxic encephalopathy.

MRI - Magnetic Resonance Imaging Practice Test

MRI - Magnetic Resonance Imaging Practice Test

MRI MRI Anatomy and Pathology 2