Author Question: When imaging a trauma elbow that is in acute flexion, how is the central ray directed in order to ... (Read 42 times)

mydiamond · **on:** Jul 17, 2018

When imaging a trauma elbow that is in acute flexion, how is the central ray directed in order to image the distal humerus?

perpendicular to the mid elbow joint
perpendicular to the humerus
perpendicular to the forearm
angled 45 degrees towards the shoulder joint

Question 2

Excessive film drying may result in:

stained radiographs
emulsion cracking
faded radiographs
static discharge

Danny Ewald · **Reply #1 on:** Jul 17, 2018

Answer to Question 1

perpendicular to the humerus

Rationale: Situations of trauma elbows may present with the patient unable to fully extend the arm. Two AP projections may be acquired, one with the forearm parallel to the image receptor and the CR perpendicular to the forearm and the second with the humerus parallel to the image receptor and the CR perpendicular to the humerus. A 90 degree lateral is also taken in the most tolerable position possible.

Answer to Question 2

emulsion cracking

Rationale: The drying mechanism in automatic processing should remove the majority of moisture from the film. Excessive drying can remove all of the moisture, causing the film emulsion to crack.