NAIMMCQ: Radiography Physics

Radiography Physics

Showing posts with label Radiography Physics. Show all posts

What is a rigid holder that contains the screens and film?

A. Quantum mottle
B. Wire Mesh
C. Cassettes
D. Osscilating grid

Answer: C

What is used to test for screen contact?

A. Wire tube test
B. Paper clip test
C. Wire Mesh test
D. Screen net test

Answer: C

Term used to describe the noisy appearance of an image that has been exposed by a limited number of X-ray photons?

A. mAs
B. Quantum mottle
C. KVP
D. K-edge

Answer: B

What is the predominant cause of image Noise?

A. KVP
B. K-edge
C. mAs
D. focal spot

Answer: C

True or False - When the Energy of the photon approaches the energy of the K-shell electron, the absorption of the beam increases this is called the K edge.

Answer: True

What is a disadvantage of rare earth screens?

A. Smaller focal spot
B. Increased radiation dose
C. Quantum mottle
D. Decreased image quality

Answer: C

Intensifying screens use phosphors that emit light by "blank"?

A. Conduction band
B. Screen Speed
C. Phosphorescence
D. Fluorescence

Answer: D

When it comes to Fluorescence, there is a process similar to characteristic X-ray emission, but involves outer shell electrons, this is called "blank blank" theory?

A. Unstable conduction
B. Conduction band
C. Delayed emission
D. Intensifying screens

Answer: B

Which of the following is NOT a Rare earth phosphor?

A.Gadolinium
B. Lanthanum
C. Yttrium
D. Zinc Sulfide

Answer: D

True or False - There are two intensifying one in front, and one in the back of the film.

Answer: True

What is the air gap technique normally used for?

A. thoracics
B. lumbar
C. coccyx
D. cervicals

Answer: D

Most chiropractic work will be in the range of (blank) to (blank) for xrays?

A. 60 kvp to 90 kvp
B. 70 kvp to 90 kvp
C. 50 kvp to 80 kvp
D. 70 kvp to 100 kvp

Answer: B

What is the most common type of grid?

A. Oscillating Grid
B. Single stroke grid
C. Reciprocating Grid
D. Moving Grid

Answer: C

If you use a grid what happens to your contrast of the film?

A. The contrast will stay the same
B. The contrast will be 1/4 different
C. The contrast will change times 8
D. The contrast will change times 2

Answer: D

True or False - The radiographic contrast approximately doubles by using a grid?

Answer: True

What is the Bucky factor when it comes to the Grid?

A. Bucky factor of the ratio of the incident radiation
B. when 2 measurements are made
C. A measurement of the % of the primary radiation transmitted through the grid
D. How much we must increase exposure factors when we change from a nongrid to a grid technique

Answer: D

What is a rigid holder that contains the screens and film?

What is used to test for screen contact?

Term used to describe the noisy appearance of an image that has been exposed by a limited number of X-ray photons?

What is the predominant cause of image Noise?

True or False - When the Energy of the photon approaches the energy of the K-shell electron, the absorption of the beam increases this is called the K edge.

What is a disadvantage of rare earth screens?

Intensifying screens use phosphors that emit light by "blank"?

When it comes to Fluorescence, there is a process similar to characteristic X-ray emission, but involves outer shell electrons, this is called "blank blank" theory?

Which of the following is NOT a Rare earth phosphor?

True or False - There are two intensifying one in front, and one in the back of the film.

What is the air gap technique normally used for?

Most chiropractic work will be in the range of (blank) to (blank) for xrays?

What is the most common type of grid?

If you use a grid what happens to your contrast of the film?

True or False - The radiographic contrast approximately doubles by using a grid?

What is the Bucky factor when it comes to the Grid?

What is the primary transmission when it comes to the Grid?

What is the most common type of Grid cut off?

Which of the following is NOT a reason for Grid Cutoff?

True or False - Most grids are unfocused.