PQ SAM Flashcards
(730 cards)
Which statement is false?
- The generator determines the capacity of the x-ray machine
- Greater capacity allows shorter exposure time
- Reduction of the exposure time will increase the motion sharpness
- The most common reason for motion unsharpness is panting
- Reduction of the exposure time will increase the motion sharpness
What is the role of the collimator?
- Filtration of the scattered beams
- Setting the size of the x-ray beam
- Setting the strength of the x-ray beam
- Reduction of x-ray radiation
- Reduction of x-ray radiation
Which on is not an exposure factor?
- kV
- mA
- kW
- s
- kW
Which statement is false
- The kVp describes the strength (penetrating power) of the x-ray beam
- The mA describes the number of x-ray photons
- To maintain the same exposure, if increasing the mAs you have to elevate the kVp too
- The same mAs can be created from different time components
- To maintain the same exposure, if increasing the mAs you have to elevate the kVp too
What is the normal range of tube voltage in small animal radiography?
- 0,1-2 kVp
- 1000-2000 kVp
- 40-100 kVp
- 4-10 kVp
- 40-100 kVp
Which of the above x-ray tubes contains rotating anode?
- A (upper)
- B (lower)
- Both
- None
- B (lower)
Which statement is true? The use of the grid
- Reduces the radiation exposure
- Improves the image contrast
- Improves the image sharpness
- Reduces the exposure time
- Improves the image contrast
What is not a normal component of an indirect digital system (CR)?
- X-ray tube
- x-ray film
- collimator
- PSP plate
- x-ray film
Which statement is false?
- The x-ray radiation is electromagnetic radiation
- X-ray beam cannot be deflected by a magnetic field
- Particles with higher energy have a higher penetrating power
- The elementary unit of the x-ray beam is the electron
- The elementary unit of the x-ray beam is the electron
Which part of the x-ray machine is marked in the picture (green box at beginning)?
- Generator
- Collimator
- X-ray tube
- Control panel/computer
- Generator
Which statement is true?
- Some digital technologies use x-ray films
- Fluoroscopy can be digital or analog
- DR systems can be digital or analog
- The picture of CR systems can be static or dynamic
- Fluoroscopy can be digital or analog
Which statement is true
- Fluoroscopy causes very low radiation exposure
- Fluoroscopy is mainly used for static examination
- During fluoroscopy the x-ray tube is generally above the animal
- Fluoroscope is also called C-arm
- Fluoroscope is also called C-arm
The negatively charged particles of an atom is the
- Proton
- Neutron
- Electron
- Nucleus
- Electron
As x-rays pass through materials, they have the ability to
- Cause some substances to fluoresce (emit visible light)
- Completely remove an electron from an atom, leaving the atom positively charged
- Cause chemical changes that can kill cells
- All of the above
- All of the above
Which of the following statements is true
- X-ray can be deflected by magnetic fields
- X-rays with longer wavelengths penetrate further than rays with shorter wavelengths
- Electromagnetic radiation with higher frequency has more penetrating power through space and matter
- Gamma rays are required for the production of a radiograph
- X-rays with longer wavelengths penetrate further than rays with shorter wavelengths
Electrons travel
- Toward the cathode in an x-ray tube
- Away from the anode in an x-ray tube
- Toward the anode in an x-ray tube
- None of them are true
- Toward the anode in an x-ray tube
X-ray photons travel
- Toward the cathode in an x-ray tube
- Away from the anode in an x-ray tube
- Toward the anode in an x-ray tube
- None of them are true
- None of them are true (out of the x-ray tube –> created when e- drop an orbital)
Ways to increase penetrating power of x-rays include
- increasing kVp
- Increasing the time setting
- Increasing thermionic emission
- Increasing mAs
- increasing kVp
The millamperage-second (mAs) for 100 mA and 1/10 sec is
- 10 mAs
- 10000 mAs
- 100 mAs
- 1 mAs
- 10 mAs
According to Santes’ rule, if a cats abdomen measures 8 cm, FFD is 100 cm, kVp is
- 72
- 56
- 66
- 52
- 56 (100 cm = 39,4 inches, (8*2)+39,4 =55,4)
Increasing the film-object distance
- The resulting image will be larger
- The resulting image will be sharper
- The resulting image will be distorted
- Both A and B is correct
- The resulting image will be larger
One percent of the energy produced at the anode is in the form of
- heat
- X-ray
- Light
- None of the above
- X-ray
The temperature of the filament within the cathode is controlled by
- Time setting
- The source-image distance
- kVp setting
- mA setting
- mA setting
Which is a characteristic of x-rays?
- Their total number produced is determined by kV
- Longer wavelengths have more penetrating power
- Their intensity increases as SID (source-image distance) decreases
- They diverge from a light source
- Their intensity increases as SID (source-image distance) decreases