Introduction to Radiology

Question 1

Standard radiograph utilizes what type of radiation?

Answer 1

ionizing (although not much)

Question 2

something that is VERY dense such as metal, appears __ on an X-ray?

Answer 2

WHITE

Question 3

The LOW LOW density think (ie: air) appears ___ on an X-ray?

Answer 3

BLACK

Question 4

How does: fat, water/tisse and bone appear on an X-ray?

Answer 4

Fat: charcoal gray
Water/Tissue: Gray
Bone: grayish white

Question 5

What other factors besides density play a role in how images are projected?

Answer 5

Tissue depth and atomic weight

Question 6

The thicker the object, the more dense and appears?

Answer 6

white

Question 7

the heavier the object is (ie: high atomic weight), the more dense and appears?

Answer 7

white bc less photons can go through that heavy object

Question 8

when you are looking at the X-ray how should you orient the image?

Answer 8

as if you are facing the patient!

so your right is pt L

Question 9

what are “real-time” radiographs called?

Answer 9

fluoroscopy

Question 10

fluoroscopy is used for?

Answer 10

radiographic guided procedures

Question 11

What uses a large amount of radiation and provides detailed images of the brain, chest, abdomen, pelvis and bone structure?

Answer 11

CT (computed tomography)

Question 12

True/False: CT can be presented in different planes and views.

Answer 12

True

Question 13

In CT imaging, the structures project shades from white-gray-black, depending on their?

Answer 13

density compared to water density

if it is less dense than water, it will appear darker or black

Question 14

what imaging modality does not use any form of ionizing radiation?

Answer 14

MRI (Magnetic resonance imaging)

Question 15

where to practice xrays?

Answer 15

NETTERS

shoulder/axilla: p409
elbow: p425
wrist and hand: p445