X-Ray Certification Anatomy Recognition 5

Question 1

On a PA chest radiograph, which structure forms the left heart border inferiorly?

Accepted Answer

Left ventricle

Answer

The left ventricle forms the inferior left heart border on the PA chest radiograph.

Question 2

Which anatomical structure produces the 'snowcap' appearance of the humeral head on an AP shoulder radiograph?

Accepted Answer

Calcific tendinitis deposits

Answer

Calcific tendinitis causes calcium hydroxyapatite deposits within the rotator cuff tendons, appearing as dense opacities near the humeral head.

Question 3

On a lateral foot radiograph, which angle between the calcaneal inclination and the fifth metatarsal base is used to assess flatfoot?

Accepted Answer

Calcaneal inclination angle

Answer

The calcaneal inclination angle (pitch angle) measures the degree of calcaneal elevation and is reduced in flatfoot deformity.

Question 4

Which normal structure on a frontal chest radiograph produces the 'aortic nipple' appearance on the left superior mediastinum?

Accepted Answer

Left superior intercostal vein

Answer

The left superior intercostal vein creates the aortic nipple, a small rounded projection at the aortic arch level.

Question 5

On an AP wrist radiograph, scapholunate dissociation is suspected when the scapholunate gap measures more than how many millimeters?

Accepted Answer

3 mm

Answer

A scapholunate gap greater than 3 mm (Terry Thomas sign) indicates ligamentous disruption between the scaphoid and lunate.

X-Ray Certification Practice Test