Imaging and Diagnostic Tests

Question 1

What has similar characteristics to radiograph/X-ray

Answer 1

CT Scan also has same principles of radiopaque vs radiolucent

Question 1

Describe Radiopaque vs Radiolucent on X-Ray

Answer 1

Radiopaque is whiter, greyer, solid color due to attenuation/absorption of light. Structures like BONE, metal, fluid. More Dense (shown in atelectasis for e.g b/c no air)

Radiolucent means not as much absorbed so less dense (e.g healthy lungs full of air) would appear darker.

Question 2

Describe

Question 3

What is a CT scan used for

Answer 3

Great for bone especially spinal injuries, brain

Question 4

What are radiographs used for and NOT used for

Answer 4

Bones, Lung pathology, NOT soft tissue

Question 5

Radiograph and CT scan main contraindication

Answer 5

Pregnancy not recommended

Question 6

What is a key diff in use of T1 vs T2 MRI

Answer 6

T1 better for straight up anatomy and identifying abnormalities

T2 better if also trying to detect inflammation, fluid buildup, etc.