Intro To Radiology (?)

Question 1

Who discovered radiology?

Answer 1

wilhelm Conrad roentgen

Question 2

Properties of X-rays

Answer 2

Penetrate most matter
affect photographic film
makes some chemicals emit light
ionize matter

Question 3

ionization

Answer 3

removal of an electron (negative charge) from an atom

Question 4

What is the most white thing you see in an X-ray

Answer 4

Metal

Question 5

Photographic properties of radiograph

Answer 5

Density, contrast

Question 6

Density refers to …

Answer 6

The amount of overall blackness on the film

Question 7

Contrast refers to …

Answer 7

The shades of gray on the image

Question 8

ABCs of radiologic interpretation

Answer 8

Alignment, bone, cartilage space, soft tissue

Question 9

Alignment

Answer 9

Lordosis, kyphosis, scoliosis, deformity, spondylolisthesis, fracture alignment

Question 10

Bone

Answer 10

Cortex, medullar cavity, trabecular pattern, overall density

Question 11

Cartilage spaces

Answer 11

Disc spaces and all joints

Question 12

Soft tissues

Answer 12

Organs, blood vessels.

Question 13

Cardinal rule

Answer 13

Must have at least two views at 90 degrees to each other

Question 14

x-ray advantages

Answer 14

relatively inexpensive
widely available
useful to visualize osseous structures and joints

Question 15

x-rays disadvantages

Answer 15

ionizing radiation
does not show soft tissue well
may not detect subtle osseous pathology

Question 16

CT (computed tomography)

Answer 16

patient lies in gantry and x-ray tube travels around them
obtains cross sectional images of body

Question 17

CT advantages

Answer 17

fine bony detail and cortical bone
gold standard for head trauma
good for thorax, liver, GI tract
fast
less expensive than MRI

Question 18

CT disadvantages

Answer 18

high levels of ionizing radiation
less soft tissue detail than MRI

Question 19

MRI