Barton’s (fx): An intraarticular fracture which occurs at the posterior lip of the distal radius.

Baseball (fx): A fracture of the distal phalanx.

Bennett (fx): A fracture that occurs at the base of the first metacarpal and fracture lines entering the carpometacarpal joint.

Blowout or tripod (fx): This type of fracture is caused from a direct blow out to the orbit, or zygoma and maxilla.

Butterfly (fx): A fracture with two fragments on each side, with a wedge-shaped separate fragments. Which looks like a butterfly’s wings.

Chip (fx): A piece of a bone fragment.

Colles’ (fx): A fracture where the distal radius is fractured with the distal fragment displaced posteriorly.

Comminuted (fx): This fracture is a resulting of a bone being splintered or crushed, which results in two or more fragments.

Simple (fx): A fracture that does not break through the skin.

a. High Kvp

b. Low Kvp

c. High mAs

d. Low mAs

2. Physical contrast is the total range of density’s that can be seen by the eye?

True or False

3. Many shades of gray can be assosiated with?

a. High contrast

b. Low kVp

c. Low contrast

d. Short dynamic range

4. The term window level is post processing that changes the level of contrast?

True or False

5. When the thickness of various body parts are great subject contrast?

a. Increases

b. Decreases

6. As photoelectric interactions increase kVp decrease? True or False

7. Grids with higher grid ratio’s ___________ contrast?

a. Decrease contrast

b. Grids do not effect contrast

c. Increase contrast

8. If an image is taken with a 10″x10″ field size and you increase the collimation to a 2″x2″ field size how will this effect your contrast on the image?

a. Increasing collimation will decrease my contrast on the image.

b. Increasing collimation will increase my contrast on the image.

c. Changing in collimation has no effect on contrast.

9. A decrease in kVp by 15% is equivalent to?

a. Doubling your density

b. Doubling your contrast on the image.

c. Reducing your contrast on the image by half.

d. Reducing your density by half.

10. Any factor that will increase the fog of the image will decrease contrast?

True or False

1. B  2. False  3. C  4. False  5. A   6. True   7. C   8. B  9. D  10. True

2. What is the electric charge of the focusing cup and why is this important?

3. The larger the anode angle, the smaller the anode heel effect?  True or False

4. What are the two types of Anodes?

5. The anode rotates inside the x-ray tube by an _________  motor?

6. The most common tube failure is electrons streaming from the filament to the enclosure due to vaporized tungsten?   True or False

7. X-rays are produced isotropically, AND this means that they are emitted in a straight line?

a. First part true, second part false

b. First part false, second part true

c. Both parts true

d. Both parts false

8. The protective housing of the x-ray tube protects from ________ and _________?

9. Why do x-ray tubes mostly use a rotating anode?

10. Most of the x-ray tubes heat is dissipated by?

a. convection

b. conduction

c. radiation

answers:  1. The purpose of the focusing cup is to focus the x-ray beam so that the x-ray beam is focused on a smaller area of the target.  2. The focusing cup is negatively charged because the charge of an electron is also negative, this helps keep the electrons focused inside the focusing cup. 3. True  4. Rotating and stationary. 5. Induction  6. True  7. A.  isotropically- means emitted in all directions. 8. Radiation exposure and electrical shock.  9. Most tubes use an rotating anode because it allows the electron stream to interact with more of the target area. 10. c

I also scared the older lady so bad that, when I went into get the cassette from the first AP cart chest that she almost fell off of her bed. I felt really bad, I think I just caught her off guard.

Actual Focal Spot Size: The size of the area on the target, that is exposed to an amount of electrons.

Anode: The positively charged electrode of the x-ray tube.

Artifact: Any unwanted image on a radiograph.

Attenuation: The reducing of energy of the primary beam as it passes through the atomic part.

Automatic Exposure Control (AEC): A device that is used to control radiographic density by terminating the exposure due to the amount of radiation reaching the image receptor.

BackUp Time: The maximum amount of time set that will terminate the exposure when using an AEC.

Base Plus Fog (B+F): The minimum amount of optical density on a film.

Body Habitus: The general size of one’s body size and shape.

2. _________ charges repel and unlike charges ____________ ?

3. Electrification is created by?

a. Contact

b. Friction

c. Induction

d. All above

4. Electrostatics is the study of moving electric charges? True or False

5. Electrons flow positive to negative? True or False

6. A good electric conductor would be?

a. clay

b. glass

c. copper

d. newspaper

7. In a series circuit elements are all connected in a line?

a. series

b. parallel

8. Any charged particle in motion will make a magnetic field? True or False

9. ____________ materials are strongly attracted by a magnet?

10. The movement of a magnetic field will produce an electric current? True or False

Answers: 1. True 2. Like, Attract 3. D 4. False, it is the study of stationary charges. 5. False, electrons flow from negative to positve. 6. C 7. A 8. True 9. Ferromagnetic 10. True