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Test Bank for Patient Care in Radiography 9th Edition by Ehrlich


By: Ehrlich

Edition: 9th Edition

Format: Downloadable ZIP Fille

Resource Type: Test bank

Duration: Unlimited downloads

Delivery: Instant Download

Test Bank for Patient Care in Radiography 9th Edition by Ehrlich

Ehrlich: Patient Care in Radiography: With an Introduction to Medical Imaging, 9th Edition 


  1. X-rays were discovered in 1895 by:
  2. Coolidge.
  3. Crookes.
  4. Roentgen.
  5. Edison.

ANS: C                   REF: p. 2                OBJ: 1

  1. Of the following types of electromagnetic energy, which has the shortest wavelength?
  2. Radio waves
  3. X-rays
  4. Visible light
  5. Ultraviolet light

ANS: B                   REF: p. 7                OBJ: 7

  1. Which of the following is NOT an accurate statement regarding the characteristics of x-rays?
  2. They can penetrate matter that is impenetrable to light.
  3. They cause certain crystals to fluoresce.
  4. They can be refracted by a lens.
  5. They cannot be detected by the human senses.

ANS: C                   REF: pp. 7-8           OBJ: 8

  1. An electron cloud surrounding a hot cathode is referred to as a(n):
  2. focusing cup.
  3. ampere.
  4. space charge.
  5. filament.

ANS: C                   REF: p. 6                OBJ: 6

  1. The purpose of rotating the x-ray tube target is to:
  2. create a space charge.
  3. remove long-wavelength photons from the x-ray beam.
  4. focus the electron stream on a small target area.
  5. increase the heat capacity of the anode.

ANS: D                   REF: p. 9                OBJ: 6

  1. An imaginary photon that is emitted from the center of the focal spot, perpendicular to the long axis of the x-ray tube, is called the:
  2. electron stream.
  3. x-ray beam.
  4. central ray.
  5. radiation field.

ANS: C                   REF: p. 8                OBJ: 10

  1. A device used to control the size of the radiation field is a:
  2. collimator.
  3. detent.
  4. tube housing.
  5. filter.

ANS: A                   REF: p. 8                OBJ: 11

  1. The function of an x-ray grid is to:
    1. decrease patient radiation dose.
    2. increase radiographic resolution.
    3. increase radiographic contrast by reducing scatter radiation fog.
    4. increase radiographic density.

ANS: C                   REF: p. 14              OBJ: 11

  1. The majority of radiography education programs today are based in:
  2. proprietary schools.
  3. hospitals.
  4. clinics.
  5. colleges.

ANS: D                   REF: p. 4                OBJ: 3

  1. The container for the vacuum of the x-ray tube is made of:
  2. glass.
  3. aluminum.
  4. tungsten.
  5. carbon.

ANS: A                   REF: p. 5                OBJ: 4

  1. X-rays are a type of:
  2. electricity.
  3. microwave.
  4. kinetic energy.
  5. electromagnetic energy.

ANS: D                   REF: p. 6                OBJ: 7

  1. The frequency of an electromagnetic sine wave is defined as:
  2. the distance from trough to crest.
  3. the distance from one crest to the next.
  4. the number of times per second that a crest passes a given point.
  5. the velocity at which the wave travels through space.

ANS: C                   REF: p. 6                OBJ: 9

  1. Which of the following formulas represents the relationship between the wavelength, frequency, and velocity of an electromagnetic wave?
  2. λ ´v
  3. λ ´f
  4. Λ ÷ v
  5. λ ÷ v

ANS: B                   REF: p. 6                OBJ: 9

  1. Which of the following substances is most readily penetrated by x-rays?
  2. Water
  3. Air
  4. Bone
  5. Fat

ANS: B                   REF: p. 7                OBJ: 8

  1. Grids or buckys are generally used for body parts that measure greater than:
  2. 2 to 4 cm.
  3. 10 to 12 cm.
  4. 18 to 20 cm.
  5. 30 cm.

ANS: B                   REF: p. 15              OBJ: 11

  1. The access point for the radiographer to determine the exposure factors and to initiate the exposure is called the:
  2. transformer.
  3. image receptor unit.
  4. control console.
  5. stationary grid.

ANS: C                   REF: p. 16              OBJ: 11

  1. An x-ray machine designed for direct viewing of the x-ray image is called a(n):
  2. image receptor.
  3. transformer.
  4. control console.
  5. fluoroscope.

ANS: D                   REF: p. 17              OBJ: 11

  1. A device located between the x-ray tube and the control panel that increases the voltage delivered from the power company is called a:
  2. collimator.
  3. transformer.
  4. control console.
  5. fluoroscope.

ANS: B                   REF: p. 16              OBJ: 11