Intro to Imaging

Question 1

Why do we image?

Answer 1

-see inside the body
-enhance evals
-diagnose and help make decisions

Question 2

Image Types

Answer 2

X-ray
CT
MRI
Ultrasound
Nuclear Medicine

Question 3

X-ray Description

Answer 3

ionized beam that goes through tissue
-not absorbed=black
-absorbed=white

Question 4

X-ray Best Use

Answer 4

-tissue with high calcium
-dense tissue
-bone
-metal
-teeth

Question 5

Who can’t have an x-ray?

Answer 5

-pregnant women
-want to avoid genitals

Question 6

ALARA

Answer 6

as low as reasonably achievable

Question 7

Pathologies found with X-ray

Answer 7

fractures
osteoarthritis
bone mineral loss
bone spurs

Question 8

CT Description

Answer 8

x-ray with computer to compile images to create a 360 view we can move around

Question 9

CT Best Use

Answer 9

360 view/whole body

Question 10

Who can’t have a CT?

Answer 10

pregnant people, kids, and avoid genitals

Question 11

Pathologies found on a CT

Answer 11

-blood clots
-small fractures
-first line mineral analysis
-cancer and tumor propogation

Question 12

MRI Description

Answer 12

magnetic resonance imaging
1. magnet revolves around the person
2. magnetic frequency- particles in person resonate with the magnet
3. image taken when magnet stops
4. measure how long it takes particles to stop moving (different cells return at different rates)
5. shows different densities

Question 13

Pathologies seen on MRI

Answer 13

-soft tissue abnormalities (can see small ones)
-spinal cord injuries
-ACL/PCL complex
-cartilage loss patterns

Question 14

Description of Ultrasound

Answer 14

sound waves penetrating tissue that bounce back for us to see the image

Question 15

Best use for ultrasound

Answer 15

-soft tissue
-real time imaging

Question 16

Who can’t have and ultrasound?

Answer 16

everyone can, there are no contraindications

Question 17

Pathologies seen on Ultrasound

Answer 17

soft tissue (muscle and tendons)
-can’t see structures protected by bone (acl/pcl)

Question 18

Description of Nuclear Medicine

Answer 18

contrast or tracer added to other imaging types
-radionucleotide that shows up bright

Question 19

Best use of Nuclear imaging

Answer 19

soft tissue and real time imaging

Question 20

Pathologies seen with Nuclear Medicine

Answer 20

cancer, organ function, metabolism rate, and swallow studies

Question 21

Who can’t have nuclear medicine?

Answer 21

-those allergic to the dye
-pregnant women or planning on getting pregnant
-medicine interaction issues

Question 22

Imaging for an acute bone fracture

Answer 22

x-ray

Question 23

Suspected patellar tendon pathology

Answer 23

ultrasound
NOT MRI: it would be another trip, expensive, and ultrasound is done at point of care