Imagery

Question 1

Types of imagery

Answer 1

Radiography, CT, ultrasound, MRI, fluoroscopy blood

Question 2

Strengths of radiography

Answer 2

Great spatial resolution, cheap and available

Question 3

Weaknesses of radiography

Answer 3

Only 2D, ionising radiation, very limited soft tissue visualisation

Question 4

CT strengths

Answer 4

Cross sectional, spatial resolution, available

Question 5

CT Weaknesses

Answer 5

Ionising radiation, limited soft tissue contrast

Question 6

Ultrasound strengths

Answer 6

Non ionising radiation, multi-planar, dynamic (live), Doppler (colour to show blood)

Question 7

Ultrasound weaknesses

Answer 7

Operator dependent, can’t see through bone or gas

Question 8

MRI strengths

Answer 8

Non ionising, multiplanar, excellent soft tissue contrast

Question 9

MRI weaknesses

Answer 9

Limited availability, very strong magnetic field- safety issues, some patient not suitable, expensive shielding, can’t see clarification and gas

Question 10

Nuclear medicine strengths

Answer 10

Functional info

Question 11

Nuclear medicine weaknesses

Answer 11

Limited for anatomical information, radiation

Question 12

PET uses

Answer 12

Assess for spread of cancer, produce hotspots

Question 13

Hybrid imaging

Answer 13

Using 2 or more images to get a diagnosis- eg Ct and PeT scan

Question 14

What system is used to view images

Answer 14

PACS

Question 15

Iodinated contest medicine is used in

Answer 15

CT and aginography

Question 16

What image is used to check drain insertions (ng tubes)

Answer 16

X-ray