Connective tissues and imaging methods

Question 1

Describe the 5 densities of an X ray?

Answer 1

1. air -everything passes thru will be very dark (black) on scan
2. fat - second darkest
3. fluid soft tissue
4. bone - right before metal
5. metal - nothing goes thru will be white

Question 2

What are advantages of conventional radiology (x ray)?

Answer 2

1. quick
2. cheap
3. less radiation
4. depicts fractures well

Question 3

What are disadvantages of conventional radiology (x ray)?

Answer 3

1. multiple views required
2. exposure to radiation

Question 4

Describe CT disadvantages

Answer 4

1. 3D object on 2D plane causes overlapping
2. cant differentiate different densities

Question 5

Describe MRI imaging?

Answer 5

1. better resolution of soft tissues
2. lengthy process

Question 6

What is the periosteum?

Answer 6

-a membrane of blood vessels and nerves that coat the surface of bones.
- contains osteoblasts

Question 7

List the orbital connective tissues?

Answer 7

• tenons capsule
  -orbital septum
  -periorbita
• suspensory ligament

Question 8

Where is orbital fat found?

Answer 8

any space that is not occupied with ocular structures, connective tissue, nerves or vessels