QUIZ 2

What is the difference between radioactivity and radiation

• Radioactivity is a type of radiation

• Radiation is not the emission from stable nuclei

  radioactivity is contamination

• they are the same thing

• Radioactivity is the process of emission from unstable nuclei

  Radiation energy emitted and transferred through matter

which best describes characteristic x-ray

• specific x-rays emitted by atoms when electrons transition between energy levels.

• random emissions from any atom without specific energy levels.

• generated by high-energy collisions with matter.

• produced by radioactive decay.

which best describes Bremsstrahlung x-ray production

• occurs when photons collide with electrons.

• is the result of nuclear fusion reactions.

• production involves the absorption of x-rays by matter.

• is the emission of x-rays due to the deceleration of electrons in the electric field of atomic nuclei.

What are the properties of electromagnetic radiation

• Mass, charge, and temperature
• Color, shape, and texture
• Density, viscosity, and pressure
• wavelength, frequency, speed, amplitude, and polarization.

what radiation unit are used in radiology

• Gray (Gy), Sievert (SV), Becquerael (Bq), Roentgen (R), Curie (Ci)

• Roentgen (R), Organs (O), Test (T), MRI

• Kelvin (K), temp (F), chocochip cookies (C)

What is the source for ionizing radiation

• sources like nuclear power plants only

• Ionizing radiation is only produced by chemical reactions

• nothing it just happened

• cosmic rays, radioactive materials, and medical equipment

define attenuation

• the increase in signal strength as it propagates through a medium

• refers to the amplification of a signal in a vacuum.

• decrease in radiation intensity that results from absorption and scattering

• complete loss of radiation during transmission

define absorption

• is the process of emitting light.

• refers to the act of rejecting substances.

• the method of breaking down food in the stomach.

• the process of taking in or incorporating substances.

What are the 2 main things in image resolution

• spatial and contrast

• Color depth and contrast ratio

• make the image larger and no contrast

Who was the first to be radio graphed

• E. Ruth Ford

• Wilhelm Conrad Roentgen

• JJ Thomson

• Anna Bertha Roentgen