Radiologic Science Test
Questions
Course Introduction
Radiologic Science is an interdisciplinary field focused on the use of medical imaging technologies to diagnose and treat various conditions and diseases within the human body. This course introduces students to the foundational principles of radiology, covering topics such as radiation physics, imaging modalities (including X-ray, CT, MRI, and ultrasound), radiologic safety protocols, and image interpretation. Emphasis is placed on understanding the biological effects of radiation, implementing proper patient care, and adhering to ethical and legal standards in medical imaging. Students will gain both theoretical knowledge and practical skills essential for careers in radiologic technology and related healthcare professions.
Recommended Textbook
Essentials of Radiographic Physics and Imaging 1st Edition by James Johnston
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16 Chapters
1558 Verified Questions
1558 Flashcards
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Chapter 1: Introduction to the Imaging Sciences
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) Barium platinocyanide was the material in Dr.Roentgen's laboratory that:
A) covered the cathode ray tube
B) fluoresced when the cathode ray tube was energized C) was used to produce the radiograph of Bertha Roentgen's hand D) protected the people in the room from the x-rays
Answer: B
Q2) Kinetic energy is:
A) stored energy
B) energy being expended
C) the same as potential energy
D) power
Answer: B
Q3) What is the velocity of a baseball that travels 15 meters in 2 seconds?
A) 7.5 N
B) 7.5 m/s<sup>2</sup>
C) 7.5 J
D) 7.5 m/s
Answer: D
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3
Chapter 2: Structure of the Atom
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Sample Questions
Q1) If an atom has the same number of electrons and protons it will:
A) have a negative charge
B) have a positive charge
C) be electrically neutral
D) none of the above
Answer: C
Q2) In the early 1800s English chemist John Dalton theorized that:
A) elements form compounds
B) atoms are unique to each element in size and mass
C) a chemical reaction results from atoms being rearranged
D) all of the above
Answer: D
Q3) Atoms in each group have the same number of:
A) electrons in the outermost shell
B) atomic mass number
C) electrons
D) electron shells
Answer: A
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Chapter 3: Electromagnetic and Particulate Radiation
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58 Flashcards
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Sample Questions
Q1) As the wave's frequency increases,the wavelength:
A) stays the same
B) increases
C) decreases
D) it depends on the type of electromagnetic radiation
Answer: C
Q2) Electromagnetic theory was developed in the late 1800s by:
A) Bohr
B) Rutherford
C) Maxwell
D) Planck
Answer: C
Q3) The electromagnetic radiation that passes between the television remote and television is:
A) visible light
B) infrared light
C) microwaves
D) ultraviolet light
Answer: B
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Page 5
Chapter 4: X-Ray Circuit
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147 Flashcards
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Sample Questions
Q1) A material that is weakly repelled by a magnetic field is classified as:
A) nonmagnetic
B) paramagnetic
C) ferromagnetic
D) diamagnetic
Q2) The step-down transformer is found on the:
A) primary circuit
B) secondary circuit
C) filament circuit
D) none of the above
Q3) If a conductor is curved,the greatest amount of charge will be found:
A) at the beginning of the conductor
B) at the end of the conductor
C) at the area of the greatest curvature of the conductor
D) along the straightest area of the conductor
Q4) The autotransformer:
A) uses self-induction
B) uses two coils of wire
C) does not use a magnetic core
D) is not typically found in an x-ray machine
Page 6
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Chapter 5: The X-Ray Tube
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Sample Questions
Q1) Copper can be found __________________ of the rotating anode.
A) in the shaft
B) in the target area
C) surrounding the tungsten
D) in the base
Q2) The smaller the anode angle:
A) the smaller the actual focal spot
B) the larger the actual focal spot
C) the smaller the effective focal spot
D) the larger the effective focal spot
Q3) Which of the following practices extend tube life?
A) press the prep and exposure switches at almost the same time
B) warm up the tube just before turning the equipment off
C) use high exposures
D) none of the above
Q4) The advantage to using a larger actual focal spot is:
A) the image is sharper
B) there is less wear and tear on the tube
C) the image is less sharp
D) higher exposures can be used
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Chapter 6: X-Ray Production
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Sample Questions
Q1) Adding filtration in the path of the beam results in the x-ray emission spectrum:
A) changing along the x-axis
B) changing along the y-axis
C) both of the above
D) neither of the above
Q2) A 65-keV filament electron is not able to produce characteristic radiation.
A)True
B)False
Q3) During x-ray production the electrons penetrate the target approximately:
A) 0.2 mm
B) 0.5 mm
C) 2 mm
D) 5 mm
Q4) The primary controlling factor for beam quality is:
A) mAs
B) kVp
C) distance
D) filtration
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Chapter 7: X-Ray Interactions With Matter
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Sample Questions
Q1) The probability of Compton scattering depends on the energy level of the incident x-ray photon.
A)True
B)False
Q2) To minimize occupational exposure,the technologist should:
A) never go in an x-ray room during a procedure
B) wear protective apparel (lead aprons,gloves,etc. )when in the room during imaging
C) stand close to the patient's head
D) B and C
Q3) No matter which direction the Compton scatter photon goes,it retains approximately:
A) one fourth of its energy
B) one third of its energy
C) one half of its energy
D) two thirds of its energy
Q4) The probability of a photoelectric interaction depends on the atomic number of the atom.
A)True
B)False
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Chapter 8: Image Production
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Sample Questions
Q1) Differential absorption occurs because different tissues have varying amounts of:
A) photoelectric interactions
B) Compton scattering
C) coherent scattering
D) pair production
Q2) In producing a radiographic image,which of the following occurs last?
A) differential absorption
B) quality and quantity of x-ray beam is set at console
C) radiation interacts with image receptor
D) radiation exits the patient with different energies
Q3) Production of a static or still image is associated with:
A) film-screen imaging
B) digital imaging
C) film-screen and digital imaging
Q4) Imaging tissues with lower atomic numbers results in:
A) increased attenuation
B) decreased attenuation
C) no change in attenuation
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Chapter 9: Image Characteristics
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Sample Questions
Q1) Optimal density is the amount of density that falls:
A) in the toe of the sensitometric curve
B) in the straight-line portion of the sensitometric curve
C) in the shoulder region of the sensitometric curve
D) it depends on the anatomy being imaged
Q2) Because it reduced recorded detail,it is always best to minimize shape distortion in radiographic imaging.
A)True
B)False
Q3) Information about film contrast is provided by:
A) average gradient
B) gradient point
C) gamma
D) all of the above
Q4) The area of the sensitometric curve where changes in exposure have no affect on the optical density is the:
A) base plus fog (B + F)
B) shoulder region
C) toe region
D) straight-line region
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Chapter 10: Radiographic Exposure Technique
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Sample Questions
Q1) If the magnification factor is 1.25,the image is ______________ than the object.
A) 25% smaller
B) 125% smaller
C) 25% larger
D) 125% larger
Q2) A variable kVp-fixed mAs technique chart is most effective when used for:
A) large parts
B) small parts
C) both small and large parts
D) it has never been effective
Q3) A technique chart should be established for:
A) each radiographic room,even if there is more than one tube
B) each radiology department,even when there are multiple rooms
C) each x-ray tube,even if there is more than one tube per generator
D) none of the above
Q4) What mA should be selected to produce 32 mAs using a 0.04 exposure time?
A) 128 mA
B) 200 mA
C) 400 mA
D) 800 mA
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Chapter 11: Scatter Control
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80 Flashcards
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Sample Questions
Q1) The Moiré effect can be caused by:
A) using a grid with a frequency similar to the CR laser scanning frequency
B) using a focused grid upside down in the bucky
C) using a grid cassette in the bucky
D) A and C
Q2) The beam-restriction device that results in images with the most unsharpness around the edge of the image is the:
A) aperture diaphragm
B) collimator
C) cone or cylinder
D) none of the above
Q3) When using automatic collimation,collimating to the anatomy of interest is an unnecessary waste of time;the beam is already collimated.
A)True
B)False
Q4) The air gap technique is a frequently used method for reducing the amount of scatter radiation reaching the IR.
A)True
B)False
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Chapter 12: Image Receptors
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167 Flashcards
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Sample Questions
Q1) The color of light produced by an intensifying screen is the:
A) spectral matching
B) spectral sensitivity
C) spectral emission
D) B and C
Q2) After the PSP is exposed to x-rays,all of the energy is released as light,the same as intensifying screens.
A)True
B)False
Q3) This is the film characteristic regarding how gray or black and white the image is.
A) film speed
B) film latitude
C) film contrast
D) spectral sensitivity
Q4) The rate at which sampling occurs is the:
A) sampling rate
B) sampling frequency
C) sampling pitch
D) bit depth
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Chapter 13: Automatic Exposure Control
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Sample Questions
Q1) When a patient for a unilateral AP hip image has a metal prosthesis covering the detector,how will the bony anatomy appear with film imaging?
A) white
B) light
C) appropriate
D) dark
Q2) An ionization chamber is a hollow device that contains:
A) water
B) lead
C) tungsten
D) air
Q3) Using a lower mA station during an AEC examination results in:
A) reduced patient exposure
B) increased exposure time
C) decreased exposure time
D) A and B
Q4) All APR settings use AEC
A)True
B)False
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Chapter 14: Image Intensified Fluoroscopy
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100 Flashcards
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Sample Questions
Q1) When operated in magnification mode,the electrostatic lenses have ________ of a negative charge.
A) less
B) more
C) the same amount as usual
D) one half
Q2) This part of the image intensifier absorbs light and produces electrons.
A) input phosphor
B) output phosphor
C) photocathode
D) electrostatic focusing lenses
Q3) Performance quality control testing should be done by a:
A) radiographer
B) medial physicist
C) radiologist
D) student radiographer
Q4) The beam-splitting mirror is never used with fiberoptics.
A)True
B)False
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Chapter 15: Additional Equipment
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Sample Questions
Q1) The arc created by the total movement of the tube during tomography is the:
A) tomographic amplitude
B) exposure amplitude
C) fulcrum
D) focal plane
Q2) DXA stands for:
A) double x-ray absorption
B) density x-ray attenuation
C) dual energy x-ray absorptiometry
D) double density x-ray attenuation
Q3) This type of radiographic unit is very lightweight and produces a consistent radiation output.
A) battery-powered mobile unit
B) capacitor discharge mobile unit
C) direct-power mobile unit
D) high-frequency mobile unit
Q4) The radiographer does not need to wear a lead apron while imaging patients using mobile equipment because the exposure is very minimal.
A)True
B)False
Page 17
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Chapter 16: Computed Tomography
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Sample Questions
Q1) A tissue that attenuates more x-rays than water has a CT number:
A) 0
B) greater than 0
C) less than 0
D) unable to determine unless more is known
Q2) With spiral CT imaging,the relationship between slice thickness and table travel during one tube rotation is the:
A) protocol
B) SFOV
C) DFOV
D) pitch
Q3) As the WW changes,the CT image's:
A) contrast changes
B) brightness changes
C) spatial resolution changes
D) none of the above
Q4) EBCT scanners are the only scanners that are fast enough to image the heart.
A)True
B)False
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