MRI MRI Anatomy and Pathology

Question 1

On MRI, cortical bone appears as which signal intensity on both T1 and T2 weighted images?

Accepted Answer

Low signal (signal void)

Answer

High signal

Answer

Intermediate signal

Answer

Variable signal

Question 2

Which structure in the knee joint is best evaluated with MRI and appears as a low-signal-intensity triangular structure?

Accepted Answer

Medial meniscus

Answer

Articular cartilage

Answer

Anterior cruciate ligament

Answer

Patellar tendon

Question 3

A T1 hyperintense (bright) lesion in the brain is most consistent with which finding?

Accepted Answer

Subacute blood or fat-containing lesion

Answer

Acute infarct

Answer

Pure fluid-filled cyst

Answer

Vasogenic edema

Question 4

The normal intervertebral disc nucleus pulposus appears as which signal on T2-weighted MRI in a healthy young adult?

Accepted Answer

High signal (bright)

Answer

Low signal

Answer

Intermediate signal

Answer

Signal void

Question 5

On diffusion-weighted MRI (DWI), an acute ischemic infarct typically shows:

Accepted Answer

High signal on DWI and low ADC values

Answer

Low signal on DWI and high ADC values

Answer

High signal on DWI and high ADC values

Answer

Low signal on both DWI and ADC maps

Question 6

Which MRI sequence is most sensitive for detecting early bone marrow edema in stress fractures?

Accepted Answer

STIR or fat-saturated T2

Answer

T1-weighted SE

Answer

GRE in-phase

Answer

Proton density without fat saturation