Computed Tomography (CT)

Question 1

What is CT?

Answer 1

CT uses computer and a rotating xray device to create detailed, cross sectional images of body parts

Ionising radiation used

Question 2

What are unit of measure for greyscale image produced

Answer 2

Hounsfield units (HU)

Question 3

Patient preperation

Answer 3

• Heavy sedation or GA
• Remote monitoring
• No personnel allowed to reassess tje patient whilst CT in use - high radiation

Question 4

Uses of CT

Answer 4

• Ideal demonstration for all organs in body, especially skeletal system
• Excellent contrast of tissues
• Can be used for angiograms

Question 5

Advantages

Answer 5

• Quicker than MRI

-Cheaper than mRI

• Examines skeletal system in more detail