MidTerm Study

Top Hat Questions

chapter 1 and 2

Q1 - Which of the following is a form of radiation that is capable of creating electrically charged particles by removing orbital electrons from the atom of normal matter through which it passes?

  • Nonionizing radiation

  • ultrasonic radiation

  • ionizing radiation - ionizing radiation has enough energy to “knock out” an electron from an atom

  • subatomic radiation

Q2 - regarding exposure to ionizing radiation, pts who are educated to understand the medical benefit of an imaging procedure are more likely to:

  • suppress any radiation phobia and be willing to assume a small chance of possible biologic damage - BERT method! Background Equivalent Radiation Time

  • suppress any radiation phobia but not risk a small chance of possible biologic damage

  • Assume a small chance of biologic damage but not suppress any radiation phobia they may have

  • cancel their schedule procedure because they are not willing to assume a small chance of biologic damage

Q3 - the millisievert (mSv) is equal to:

  • 1/10 of a sievert

  • 1/100 of a sievert

  • 1/1000 of a sievert - 1mSv = .001 Sv ….. 45 mSv/1000 = .045 Sv || 1 Sv = 1000 mSv …. 45 Sv x 1000 = 45000 mSv

  • 1/10000 of a sievert

Q4 - in a hospital setting, which of the following professionals is expressly charged by the hospital administration with being directly responsible for the excution, enforcement, and maintenance of the ALARA program?

  • student radiologic technologist

  • Radiation Safety Officer - ALARA = optimization for radiation protection (ORP)

  • chief of staff

  • Assistant Administrator of the facility

Q5 - Diagnostic efficacy includes":

  1. determining if an imaging procedure is justified

  2. producing optimal quality images with the least radiation exposure to the patient

  3. adhering to radiation safety guidelines

  4. revealing the presence or absence of disease in a patient

  • 1,2 and 4 only

  • all of the options - definition of diagnostic efficacy: the degree to which a diagnostic study accurately reveals the presence or absence of disease in a pt

  • 1,2, and 3 only

  • 2,3, and 4 only

Q6 - which of the following increases radiation exposure to the patient and potentially to the radiographer

  • production of optimal quality images with the first exposure

  • use of appropriate radiation protection procedures

  • repeated radiographic exposures as a result of technical error or carelessness - reducing the potential for adverse biologic effects .. repeating x-rays increases the pts total radiation exposure and can increase the rad techs exposure

  • limited radiographic examination, as ordered by the radiologist

Q7 - X-rays:

  1. can have varing degree of penetration in normal biologic tissue

  2. can be focused by a lens

  3. are invisible

  • 1 and 2 only

  • 1 and 3 only - x-rays are electrically neutral and cannot be focused with a lens. they can penetrate matter to a varying degree and darken photographic film. they travel at the speed of light

  • 2 and 3 only

  • 1,2 and 3 only

Q8 - electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle of energy called a photon. This dual nature is referred to as

  • wave-particle interchange ability

  • wave-particle duality

  • wave attenuation capability

  • wave-particle phenomena

Q9 - which of the following identifies an element and determines its placement in the perodic table of elements

  • atomic number - atomic mass = number of protons and neutrons … isotope = two atoms have the same number of protons but a different number of neutrons in their nuclei

  • atomic weight

  • combining power

  • valence