Radiology questions Flashcards
<p>1. Which statement is false?
a. The generator determines the capacity of the x-ray machine.
b. Greater capacity allows shorter exposure time.
c. Reduction of the exposure time will increase the motion unsharpness
d. The most common reason for motion unsharpness is panting.</p>
<p>c</p>
<p>2. What is the role of the collimator?
a. Filtration of the scattered beams
b. Setting the size of the x-ray beam
c. Setting the strength of the x-ray beam
d. Reduction of x-ray radiation</p>
<p>b</p>
<p>3. Which one is not an exposure factor?
a. kV
b. mA
c. kW
d. s</p>
<p>c</p>
<p>4. Which statement is false?
a. The kVp describes the strength (penetrating power) of the x-ray beam.
b. The mA describes the number of x-ray photons
c. To maintain the same exposure, if increasing the mAs you have to elevate the kVp too.
d. The same mAs can be created from different time components.</p>
<p>d</p>
<p>5. What is the normal range of tube voltage in small animal radiography?
a. 0,1-2 kVp
b. 1000-2000 kVp
c. 40-100 kVp
d. 4-10 kVp</p>
<p>c</p>
<p>6. Which of the above x-ray tubes contains rotating anode?
a. A
b. B
c. both
d. none of them</p>
<p>c</p>
- Which statement is true? The use of the grid
a. reduces the radiation exposure
b. improves the image contrast
c. improves the image sharpness
d. reduces the exposure time
b
- What is not a normal component of an indirect digital system (CR)?
a. x-ray tube
b. x-ray film
c. collimator
d. PSP plate
c
- Which statement is false?
a. The x-ray radiation is electromagnetic radiation.
b. X-ray beams cannot be deflected by a magnetic field.
c. Particles with higher energy have a higher penetrating power.
d. The elementary unit of the x-ray beam is the electron.
d
- Which part of the x-ray machine is marked in the picture?
a. generator
b. collimator
c. x-ray tube
d. control panel/computer
a
- Which statement is true?
a. Some digital technologies use x-ray films.
b. Fluoroscopy can be digital or analog.
c. DR systems can be digital or analog.
d. The picture of CR systems can be static or dynamic.
b
- Which statement is true?
a. Fluoroscopy causes very low radiation exposure.
b. Fluoroscopy is mainly used for static examinations.
c. During fluoroscopy the x-ray tube is generally above the animal.
d. Fluoroscope is also called “C-arm”
c
- The negatively charged particle of an atom is the:
a. proton.
b. neutron.
c. electron.
d. nucleus.
c
- As x-rays pass through materials, they have the ability to:
a. cause some substances to fluoresce (emit visible light).
b. completely remove an electron from an atom, leaving the atom positively charged.
c. cause chemical changes that can kill cells.
d. all of the above.
d
- Which of the following statements is true?
a. X-rays can be deflected by magnetic fields.
b. X-rays with longer wavelengths penetrate farther, than rays with shorter wavelengths.
c. Electromagnetic radiation with higher frequency has more penetrating power through space and matter.
d. Gamma rays are reguired for the production of a radiograph.
c
