What is the most common type of Grid cut off?
A. Lateral decentering
B. Grid put in upside down
C. Central ray not perpendicular to central axis
D. incorrect SID
Answer: A
Radiography Physics
- 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?
- Which of the following is NOT a reason for Grid Cutoff?
- True or False - Most grids are unfocused.
- What is the most common type of Grid?
- True or False - If you decrease the X-ray beam field size the amount of tissue exposed regardless of thickness or density scatter radiation can be diminished?
- What is the most common type of shape distortion?
- As the Object film distance increases the detail (blank)?
- If you increase the SID (distance) Detail will (blank)