Computed Tomography (CT)

Question 1

What is computed tomography

Answer 1

o Cross-sectional technique that merges x-rays with advanced computer processing of the image. (tons of x-rays stitched together)

Question 2

List 7 common clinical uses of CT

Answer 2

• High risk trauma patients
• Spinal cord
• Subtle or complex fractures
• Loose bodies in a joint
• Degenerative changes in spine
• Spinal stenosis
• Cellulitis or abscess

Question 3

Name 3 common types of CT

Answer 3

• scans with contrast
• myelography: neuro (spinal)
• arthrography: joints

Question 4

List 3 contraindications of CT

Answer 4

• Dosage of Radiation
• Nephropathy
• Iodine allergy

Question 5

List the pros and cons of CT

Answer 5

o Pros:
- Highly detailed
- Faster than MRI or ultrasound
- Accurate measurement of osseus alignment
- Less expensive than MRI
- Less claustrophobic than MRI
o Cons:
- High radiation exposure (equal to 200 chest x-rays)
- Not good at visualizing soft tissue
- Only provide static images