ARRT Cross-Sectional Anatomy 2

Question 1

On an axial CT image at the level of the carina, which structure lies immediately posterior to the ascending aorta?

Accepted Answer

Right pulmonary artery

Answer

The right pulmonary artery passes posterior to the ascending aorta at the level of the carina.

Question 2

Which of the following best describes the CT appearance of the caudate lobe of the liver?

Accepted Answer

A small segment located between the IVC and the fissure for the ligamentum venosum

Answer

The caudate lobe (segment I) lies between the IVC posteriorly and the fissure for the ligamentum venosum anteriorly.

Question 3

On axial CT of the pelvis, the obturator internus muscle is best identified by its location:

Accepted Answer

Lining the lateral wall of the true pelvis adjacent to the obturator foramen

Answer

The obturator internus lines the lateral wall of the true pelvis, arising from the inner surface of the obturator foramen.

Question 4

Which pancreatic landmark on CT imaging marks the junction between the head and body of the pancreas?

Accepted Answer

The superior mesenteric vein crossing the pancreas

Answer

The superior mesenteric vein crosses the anterior surface of the pancreas at the junction of the head and body.

Question 5

On axial CT at the level of L4-L5, which structure is found anterior to the vertebral body?

Accepted Answer

Abdominal aortic bifurcation

Answer

The abdominal aorta bifurcates into the common iliac arteries at approximately the L4 vertebral level.

(ARRT) American Registry of Radiologic Technologists Computed Tomography Certification Practice Test