Radiation Physics for Radiography
Review Questions
Course Introduction
Radiation Physics for Radiography provides a comprehensive foundation in the principles of radiation physics as they pertain to medical imaging. This course covers the nature and properties of ionizing and non-ionizing radiation, the interactions of x-rays with matter, and the mechanisms of x-ray production. Students will learn about radiation units, measurement, and the factors influencing image quality and patient dose. Special emphasis is placed on the practical application of physics concepts to radiographic techniques, radiation protection, and safety standards within clinical settings. This knowledge equips students to understand the scientific principles underlying radiographic technology and to make informed decisions for optimizing diagnostic imaging and minimizing risks.
Recommended Textbook
Principles of Radiographic Imaging 5th Edition by Richard R. Carlton
Available Study Resources on Quizplus
45 Chapters
1738 Verified Questions
1738 Flashcards
Source URL: https://quizplus.com/study-set/2116
Page 2
Chapter 1: Basic Mathematics
Available Study Resources on Quizplus for this Chatper
18 Verified Questions
18 Flashcards
Source URL: https://quizplus.com/quiz/42146
Sample Questions
Q1) The equation (x+y) <sup>2</sup> can be expressed as:
A)x<sup>2</sup> + 2xy + y<sup>2</sup>
B)2x + 2y
C)x + 2xy + y<sup>2</sup>
D)x<sup>2</sup> + y<sup>2</sup> + xy
Answer: A
Q2) Convert 87.3% to a decimal.
A)0.0873
B)0.873
C)8.73
D)87.3
Answer: B
Q3) Mercury (Hg), a metal, is liquid at room temperature.Its density is 13.6 g/cm<sup>3</sup>.If you have 100 mL of Hg, how many grams do you have?
A)0.136
B)1.36 * 10<sup>-3</sup>
C)136
D)1.36 * 10<sup>3</sup>
Answer: D
To view all questions and flashcards with answers, click on the resource link above.
Page 3
Chapter 2: Radiation Concepts
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/42147
Sample Questions
Q1) can be long wavelengths in kilometers
A)infrared energy
B)gamma rays
C)radio waves
D)ultraviolet energy
E)excitation
F)lambda
G)amplitude
H)velocity
Answer: C
Q2) A period in the periodic table is
A)represented by a column.
B)vertical.
C)the principal quantum number.
D)determined by the valence electrons.
Answer: C
To view all questions and flashcards with answers, click on the resource link above. Page 4
Chapter 3: Electricity
Available Study Resources on Quizplus for this Chatper
49 Verified Questions
49 Flashcards
Source URL: https://quizplus.com/quiz/42148
Sample Questions
Q1) superconductor
A)electron
B)neutron
C)proton
D)binding energy
E)kinetic energy
F)atomic mass
G)atomic number
H)isotope
Answer: C
Q2) When 6.24 x 10<sup>18 </sup>electrons travel in one second producing a joule (j) of work,
A)one volt has been created.
B)one ohm has traveled through the circuit.
C)an ampere of resistance has been created.
D)alternating current has been generated.
Answer: A
Q3) A 25 watt lightbulb operates on 120-volt household voltage.How much current does the lightbulb draw?
Answer: 0.21 amp
To view all questions and flashcards with answers, click on the resource link above. Page 5
Chapter 4: Electromagnetism
Available Study Resources on Quizplus for this Chatper
46 Verified Questions
46 Flashcards
Source URL: https://quizplus.com/quiz/42149
Sample Questions
Q1) 10,000 gauss
A)magnetic flux
B)spin magnetic moment
C)tesla
D)electromagnet
E)permeability
F)retentivity
G)paramagnetic
H)ferromagnetic
Q2) an electron doper to improve conductance
A)semiconductor
B)diode
C)p-type material
D)n-type material
E)thyristor
F)valve tube
G)arsenic
H)gallium
Q3) List the three ways to induce an electromagnetic field.
Q4) The magnitude of an induced electromagnetic field depends on what four factors?
To view all questions and flashcards with answers, click on the resource link above. Page 6
Chapter 5: X-Ray Equipment
Available Study Resources on Quizplus for this Chatper
47 Verified Questions
47 Flashcards
Source URL: https://quizplus.com/quiz/42150
Sample Questions
Q1) The kVp control is found between the
A)incoming line and the exposure switch.
B)autotransformer and the timer circuit.
C)exposure switch and the step-up transformer.
D)incoming line and the step-down transformer.
Q2) Present-day AEC technology utilizes
A)ionization chamber technology.
B)minimum reaction times as short as 1 ms.
C)a pre-detector AEC chamber position.
D)all of the above
Q3) Which tube suspension system offers the greatest multidirectional movement?
A)overhead tube suspension system
B)floor-to-ceiling tube suspension system
C)floor tube suspension system
D)mobile tube suspension system
Q4) At what point in the x-ray circuit is the rectification circuit located?
A)between the semiconductors and the valve tubes
B)between the step-down transformer and the rheostat
C)between the step-up transformer and the x-ray tube
D)between the thermionic diode tubes and the x-ray machines
To view all questions and flashcards with answers, click on the resource link above. Page 7
Chapter 6: The X-Ray Tube
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/42151
Sample Questions
Q1) When radiographing a wedge-shaped anatomical structure such as the femur, the thicker portion of the anatomy should be positioned
A)under the cathode end of the tube.
B)in the exact center of the beam. as it is most intense in the center.
C)off center laterally to negate the heel effect.
D)under the anode side of the tube.
Q2) Metal envelope x-ray tubes are gaining in popularity.Explain some key advantages to a metal housing x-ray tube.
Q3) Which of the following would affect the production of a thermionic cloud?
A)filament diameter
B)filament length
C)filament temperature
D)all of the above
Q4) List the three functions of the x-ray tube anode.
Q5) Tungsten is the metal of choice for the source of x-ray photons because of its
A)high atomic number.
B)low melting point.
C)low mass number.
D)low cost.
To view all questions and flashcards with answers, click on the resource link above. Page 8
Chapter 7: X-Ray Production
Available Study Resources on Quizplus for this Chatper
26 Verified Questions
26 Flashcards
Source URL: https://quizplus.com/quiz/42152
Sample Questions
Q1) Bremsstrahlung interactions may occur only when the incident electron interacts with
A)an inner-shell electron.
B)an outer-shell electron.
C)the force field around the nucleus.
D)the nuclear force within the nucleus.
Q2) Characteristic interactions may occur only when the incident electron interacts with A)an inner-shell electron.
B)an outer-shell electron.
C)the force field of the nucleus.
D)protons within the nucleus.
Q3) At the end of the characteristic cascade, the ____ shell is missing an electron.
A)innermost
B)K
C)outermost
D)characteristic
To view all questions and flashcards with answers, click on the resource link above. Page 9
Chapter 8: Radiation Protection Concepts and Equipment
Available Study Resources on Quizplus for this Chatper
36 Verified Questions
36 Flashcards
Source URL: https://quizplus.com/quiz/42153
Sample Questions
Q1) In air, alpha particles can travel
A)less than 1 mm.
B)5 cm.
C)5 m.
D)5 km.
Q2) For x-rays and gamma rays approximately ____ of the biological effects on tissue are the result of indirect actions.
A)20 percent
B)40 percent
C)70 percent
D)100 percent
Q3) One joule of energy absorbed in each kilogram of absorbing material defines the A)sievert. B)kerma.
C)becquerel.
D)gray.
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Radiation Protection Procedures for Patients and
Personnel
Available Study Resources on Quizplus for this Chatper
36 Verified Questions
36 Flashcards
Source URL: https://quizplus.com/quiz/42154
Sample Questions
Q1) When no threshold dose for radiation exists, the effect is known as A)stochastic.
B)nonstochastic.
C)deterministic.
D)both b and c
Q2) The use of a radiographic grid when performing a femur radiograph will result in
A)a small decrease in patient dose.
B)an increase in patient dose.
C)no change to the patient dose.
D)a large decrease in patient dose.
Q3) All of the following would be effective structural protective barrier materials EXCEPT A)Bakelite.
B)lead-lined drywall.
C)12-inch thick solid concrete.
D)lead impregnated acrylic polymer.
To view all questions and flashcards with answers, click on the resource link above.
11
Chapter 10: Filtration
Available Study Resources on Quizplus for this Chatper
38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/42155
Sample Questions
Q1) The problem of unequal subject radiographic density is solved by a A)Thoraeus filter.
B)compensation filter.
C)K-edge filter.
D)grid.
Q2) Which term best describes the filtration that occurs as the primary beam passes through the glass window of the x-ray tube?
A)total
B)inherent
C)added
D)scatter
Q3) If the half-value layer of diagnostic radiographic equipment is too low, it may be corrected by
A)increasing the primary beam filtration.
B)decreasing the primary beam filtration.
C)decreasing the kVp.
D)increasing the mAs.
To view all questions and flashcards with answers, click on the resource link above.
12
Chapter 11: The Prime Factors
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/42156
Sample Questions
Q1) An acceptable radiograph was taken using 20 mAs at 70 kVp at a distance of 40 inches.A second radiograph is requested at 72 inches.What mAs should be used to produce this radiograph with a 72-inch distance?
Q2) An acceptable radiograph was taken using 40 mAs at 80 kVp at a distance of 60 inches.A second radiograph is requested at 40 inches.What mAs should be used to produce this radiograph with a 40-inch distance?
Q3) Kilovoltage is the primary controlling factor of A)radiographic film density.
B)radiographic film contrast.
C)beam quantity.
D)none of the above
Q4) If kVp is doubled, the amount of x-ray photons created approximately increases A)twofold.
B)threefold.
C)fourfold.
D)eightfold.
Q5) Given 5 mAs and a milliamperage of 200, calculate the exposure time.
Q6) Given 50 mA and an exposure time of 0.50 second, calculate the mAs.
Q7) Given 25 mAs and a milliamperage of 100, calculate the exposure time.
To view all questions and flashcards with answers, click on the resource link above. Page 13
Chapter 12: X-Ray Interactions
Available Study Resources on Quizplus for this Chatper
41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/42157
Sample Questions
Q1) When an electron from an outer shell fills a vacancy in an inner shell,
A)the total energy of the electron increases.
B)the electron increases its mass.
C)a photon is released.
D)all of the above
Q2) In the human body, ____ is the predominant interaction through most of the diagnostic x-ray range.
A)Compton scattering
B)coherent scatter
C)photoelectric interactions
D)photodisintegration
Q3) no loss in energy
A)60 kVp
B)shaped contact
C)focal spot size
D)distance (SID)
E)44-48 inches
F)AP supine abdomen position
G)oblique projection of the abdomen
H)18 mAs @ 70 kVp
To view all questions and flashcards with answers, click on the resource link above. Page 14
Chapter 13: Minimizing Patient Dose
Available Study Resources on Quizplus for this Chatper
30 Verified Questions
30 Flashcards
Source URL: https://quizplus.com/quiz/42158
Sample Questions
Q1) has no impact upon patient dose
A)60 kVp
B)shaped contact
C)focal spot size
D)distance (SID)
E)44-48 inches
F)AP supine abdomen position
G)oblique projection of the abdomen
H)18 mAs @ 70 kVp
Q2) Patient entrance skin exposure decreases as
A)source-to-image receptor distance (SID) decreases.
B)SID increases.
C)source-to-object distance (SOD) decreases.
D)object-to-image receptor distance (OID) increases.
Q3) When patient SID or SOD increases,
A)patient ESE decreases.
B)patient ESE increases.
C)patient ESE increases by the square of the distance.
D)there is no relationship between ESE and distance.
To view all questions and flashcards with answers, click on the resource link above.
Page 15
Chapter 14: Vision and Perception
Available Study Resources on Quizplus for this Chatper
26 Verified Questions
26 Flashcards
Source URL: https://quizplus.com/quiz/42159
Sample Questions
Q1) All radiographic images are missing the critical diagnostic element of A)depth.
B)length.
C)width.
D)none of the above
Q2) Rods function best in which type of light?
A)yellow wavelength light
B)dim light levels
C)red wavelength light
D)bright, intense light levels
Q3) The visual phenomenon involving the perception of extremely small or faint details is termed the
A)Adler effect.
B)boundary effect.
C)threshold detection.
D)Mach effect.
To view all questions and flashcards with answers, click on the resource link above.
Page 16
Chapter 15: Beam Restriction
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/42160
Sample Questions
Q1) Which of the following is placed between the patient and the image receptor to absorb scatter radiation?
A)radiographic grid
B)AEC detector
C)collimator
D)cylinder
Q2) Placing a lead blocker adjacent to an obese patient's anatomy during a lateral lumbar spine radiograph
A)is unnecessary with today's digital receptors.
B)will improve image quality.
C)will reduce exposure to the patient.
D)will reduce exposure to the radiographer.
Q3) Scatter radiation in radiography is produced during A)Compton interactions.
B)photoelectric effect interactions.
C)coherent or classical interactions.
D)an annihilation interaction.
Q4) Bone absorbs more radiation and produces more scatter than soft tissue.
A)True
B)False
Page 17
To view all questions and flashcards with answers, click on the resource link above.
Chapter 16: The Patient As a Beam Emitter
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/42161
Sample Questions
Q1) Which of the following is the least attenuator of the x-ray beam?
A)pneumonated lung
B)pericardial fat
C)psoas muscle
D)perirenal fat
Q2) All of the following are related EXCEPT A)air.
B)barium.
C)fat.
D)bone.
Q3) The patient has an impact on all the properties that affect radiographic quality. A)True
B)False
Q4) The relationship between radiographic contrast and the patient is termed subject contrast.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above.
18
Chapter 17: The Pathology Problem
Available Study Resources on Quizplus for this Chatper
34 Verified Questions
34 Flashcards
Source URL: https://quizplus.com/quiz/42162
Sample Questions
Q1) As radiation passes through the patient, it undergoes
A)attenuation.
B)absorption.
C)scatter and secondary interactions.
D)all of the above
Q2) Which of the following pathologies is not considered an additive condition?
A)atelectasis
B)pneumonia
C)emphysema
D)empyema
Q3) As a patient is undergoing a colon examination, you notice under fluoroscopy the presence of colonic diverticuli in the descending and rectosigmoid colon.As you prepare for follow-up radiographs, you would determine your exposure technique and
A)increase the mAs for this condition.
B)decrease the mAs for this condition.
C)make no technique changes for this condition.
D)ask the radiologist if this is an additive or destructive condition and adjust technique accordingly..
To view all questions and flashcards with answers, click on the resource link above.
19
Chapter 18: The Grid
Available Study Resources on Quizplus for this Chatper
41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/42163
Sample Questions
Q1) A satisfactory abdominal radiograph is produced using a 12:1 grid (grid-conversion factor [GCF] = 5.5), 30 mAs, and 85 kVp.A second film is requested using a 16:1 grid (GCF = 6.75).What mAs is needed to produce the second radiograph with comparable radiographic density?
Q2) undesirable, superimposed lines on CR image
A)grid frequency
B)grid ratio
C)contrast improvement factor
D)focussed grid
E)air-gap technique
F)Moire effect
G)grid cut-off
H)convergence point
I)Hollis Potter
J)Gustav Bucky
Q3) A grid absorbs
A)light.
B)incident electrons.
C)scatter electrons.
D)scatter radiation.
To view all questions and flashcards with answers, click on the resource link above. Page 20
Chapter 19: Radiographic Film
Available Study Resources on Quizplus for this Chatper
33 Verified Questions
33 Flashcards
Source URL: https://quizplus.com/quiz/42164
Sample Questions
Q1) According to the Gurney-Mott theory, the incident photon interacts with one of the halides and ejects a/an
A)electron.
B)x-ray photon.
C)light photon.
D)sensitivity speck.
Q2) The gelatin is used to
A)form the silver halide crystal lattice.
B)react with the silver halide crystals.
C)distribute the crystals evenly over the surface of the film.
D)form a rigid base for the emulsion.
Q3) The adhesive layer is intended to glue the
A)crystals to the base.
B)emulsion to the base.
C)gelatin to the crystals.
D)film to the phosphor screen.
To view all questions and flashcards with answers, click on the resource link above.
21
Chapter 20: Film Processing
Available Study Resources on Quizplus for this Chatper
41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/42165
Sample Questions
Q1) The washing process is used to remove
A)developer only.
B)fixer only.
C)heavy densities only.
D)developer and fixer.
Q2) Fixer solution becomes saturated with ____ ions.
A)bromide
B)silver
C)sodium
D)copper
Q3) The primary chemical agents in the developer are called ____ agents.
A)reducing
B)clearing
C)circulation
D)replenishment
Q4) Developer has an ____ pH, while the fixer has an ____ pH.
A)acidic; acidic
B)acidic; alkaline
C)alkaline; acidic
D)alkaline; alkaline
To view all questions and flashcards with answers, click on the resource link above. Page 22
Chapter 21: Film Sensitometry
Available Study Resources on Quizplus for this Chatper
36 Verified Questions
36 Flashcards
Source URL: https://quizplus.com/quiz/42166
Sample Questions
Q1) Which point on the D log E curve represents the point where all the silver halide crystals have a full complement of silver atoms?
A)toe
B)shoulder
C)straight line portion
D)D<sub>max</sub>
Q2) Where on the D log E curve is the majority of diagnostic information found?
A)toe
B)shoulder
C)straight line portion
D)D<sub>max</sub>
Q3) Film may experience fog in the form of A)heat.
B)light.
C)radiation.
D)all of the above
To view all questions and flashcards with answers, click on the resource link above. Page 23
Chapter 22: Intensifying Screens and Film Screen
Combinations
Available Study Resources on Quizplus for this Chatper
43 Verified Questions
43 Flashcards
Source URL: https://quizplus.com/quiz/42167
Sample Questions
Q1) Intensifying screens are used to
A)reduce patient radiation dose.
B)produce light photons.
C)amplify the incoming x-ray beam.
D)all of the above
Q2) non-clinical, extraneous information on the final image
A)CaWO<sub>4</sub>
B)gadolinium oxysulfide:terbium activated
C)fluorescence
D)conversion efficiency
E)RS 100
F)MTF
G)artifact
H)phosphorescence
I)increases quantum mottle
J)line spread function
K)RS 400
L)lp/mm
To view all questions and flashcards with answers, click on the resource link above. Page 24
Chapter 23: Digital Radiography
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/42168
Sample Questions
Q1) In CR technology, preprocessing of data includes A)histogram analysis.
B)gray scale analysis.
C)exposure data recognition (EDR).
D)all of the above
Q2) When changing exposure technique from 9 mAs to 18 mAs using computed radiography, the radiographer should expect
A)an increase in S number from 350 to 475.
B)an EI number increase from 1500 to 1800.
C)a visible change in radiographic image density.
D)all of the above
Q3) In digital image processing, the digital data set is arranged into a histograph distribution in order to determine the A)display matrix.
B)exposure index.
C)values of interest (VOI).
D)both b and c
To view all questions and flashcards with answers, click on the resource link above. Page 25
Chapter 24: Picture Archiving and Communication Systems
Pacs
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/42169
Sample Questions
Q1) A ____ connects all the computers in a system.
A)WAN
B)DICOM
C)LAN
D)CCD
Q2) Production of a grainy, reticulated image that cannot be corrected in digital post-processing is the result of
A)failure to use a high enough mAs setting.
B)failure to use a high enough kVp setting.
C)failure to use the correct algorithm.
D)failure to use the proper SID.
Q3) As a result of film digitizers,
A)hard-copy analog films can be scanned into digital format.
B)digitized images can be placed into a PACS.
C)digitized images can be networked with other DICOM images.
D)all of the above
Q4) What is the anticipated file size for a single cardiac cath acquisition of 20 seconds at 15 fps with a digital matrix of 760 x 512 x10?
Page 26
To view all questions and flashcards with answers, click on the resource link above.
Chapter 25: The Imaging Process
Available Study Resources on Quizplus for this Chatper
26 Verified Questions
26 Flashcards
Source URL: https://quizplus.com/quiz/42170
Sample Questions
Q1) What process is used to create a hard copy of digital images?
A)laser
B)DICOM formatting
C)wet mounting
D)You can't create hard copies of digital images.
Q2) Upon analysis of a chest radiograph taken on a female patient, the radiographer notices that there is an uneven radiographic density over the lung bases.One lung base is significantly underexposed compared to the other.In an effort to determine the possible cause(s), a logical strategy to take would be to
A)inspect the AEC detectors and retake the image.
B)retake the image on expiration.
C)ask the patient if she has had a previous breast surgery.
D)make a note for the radiologist that you cannot explain the opacification, as the patient is asymptomatic.
Q3) Image quality is primarily the domain of the
A)x-ray service engineer.
B)administrator.
C)radiographer.
D)physicist.
To view all questions and flashcards with answers, click on the resource link above.
Page 27
Chapter 26: Densityir Exposure
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/42171
Sample Questions
Q1) A radiograph of the forearm is produced using 4 mA at 55 kVp.What kVp would be required to double the exposure?
Q2) require an increase in mAs as ratio increases
A)mAs
B)kVp
C)density maintenance formula
D)radiographic grids
E)15% rule
F)anode heel effect
G)focal spot size
H)recorded detail
I)EI value
J)visibility of detail
Q3) If a satisfactory PA chest radiograph is obtained with 4 mAs at 72 in., what mAs is required to maintain the same density at 60 in.?
Q4) If a radiograph using 50 mA (400 mA at 0.125 sec.) produced a radiograph with satisfactory density, what new mA should be used at 0.25 sec.?
Q5) If 80 kVp, 400 mA, and 0.025 sec.produce a satisfactory radiograph, what mAs was used?
To view all questions and flashcards with answers, click on the resource link above. Page 28
Chapter 27: Contrast
Available Study Resources on Quizplus for this Chatper
38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/42172
Sample Questions
Q1) used to calculate slope of the H and D curve
A)average gradient
B)long scale contrast
C)Compton interactions
D)low contrast
E)short scale contrast
F)high contrast
G)photoelectric interactions
H)subject contrast
Q2) The difference between two adjacent densities is
A)recorded detail.
B)quantum mottle.
C)radiographic contrast.
D)distortion.
Q3) Which of the choices below does not increase contrast?
A)increasing grid ratio
B)increasing the amount of irradiated tissue
C)decreasing filtration
D)decreasing kVp
To view all questions and flashcards with answers, click on the resource link above. Page 29
Chapter 28: Recorded Detail
Available Study Resources on Quizplus for this Chatper
42 Verified Questions
42 Flashcards
Source URL: https://quizplus.com/quiz/42173
Sample Questions
Q1) Calculate the penumbra for an image taken with a 2.0 mm focal spot, at a 72 in.distance, and OID of 1 in.
Q2) switching from 10:1 grid to 6:1 grid
A)PSF
B)quantum noise
C)resolution increase
D)MTF
E)MF
F)LSF
G)aliasing
H)loss of visibility of detail
Q3) A pixel bit depth of 2<sup>16 </sup>will demonstrate _______ shades of gray
A)16
B)32
C)65,536
D)none of the above
Q4) Calculate the penumbra for an image taken with a 2.0 mm focal spot, at a 40 in.distance, and OID of 2 in.
Q5) Calculate the penumbra for an image taken with a 2.0 mm focal spot, at a 72 in.distance, and OID of 6 in.
To view all questions and flashcards with answers, click on the resource link above. Page 30
Chapter 29: Distortion
Available Study Resources on Quizplus for this Chatper
35 Verified Questions
35 Flashcards
Source URL: https://quizplus.com/quiz/42174
Sample Questions
Q1) If an object is measured as 4 in.in diameter on the image and 4 in.from the film, what is the actual size of the object if the SID is 40 in.?
Q2) Which of the following occurs when the tube or the image receptor is not properly aligned?
A)elongation
B)magnification
C)foreshortening
D)minification
Q3) If an object measures 2 cm and the image measures 4 cm, what is the percent magnification of the object?
Q4) Distortion is a misrepresentation of A)size only.
B)shape only.
C)size and shape.
D)detail.
Q5) If an object is measured as 4 in.in diameter on the image and 2 in.from the film, what is the actual size of the object if the SID is 40 in.?
Q6) Calculate the magnification factor when the SID is 72 in.and the OID is 2 in.
Q7) Calculate the magnification factor when the SID is 40 in.and the SOD is 25 in.
To view all questions and flashcards with answers, click on the resource link above. Page 31
Chapter 30: The Art of Image Critique
Available Study Resources on Quizplus for this Chatper
27 Verified Questions
27 Flashcards
Source URL: https://quizplus.com/quiz/42175
Sample Questions
Q1) If the electronic timer of a high frequency generator is suspect,
A)a standard spinning top test should be performed.
B)the timer should be compared with a stop watch.
C)an exposure time modifier should be calculated and incorporated into future exposures.
D)a qualified service engineer should be called.
Q2) A photographic problem with visibility of detail would be likely due to
A)improper SID.
B)improper OID.
C)inadequate kVp.
D)improper focal spot selection.
Q3) recorded detail problem
A)improper patient preparation
B)an S# of 50
C)film-screen contact problem
D)consistently low contrast images
E)image cut-off along the long dimension of a cassette
F)presence of grid lines on image
G)white specks on final images
H)hypothesis
To view all questions and flashcards with answers, click on the resource link above. Page 32
Chapter 31: Quality Management
Available Study Resources on Quizplus for this Chatper
36 Verified Questions
36 Flashcards
Source URL: https://quizplus.com/quiz/42176
Sample Questions
Q1) minimum SSD for portable fluoroscopic units
A)synchronous motor spinning top
B)2% of SID
C)DQE
D)MQSA
E)12 inches
F)S:N ratio
G)exposure reproducibility
H)15 inches
Q2) Installation and acceptance testing of equipment is the responsibility of the
A)radiation physicist.
B)radiology supervisor.
C)radiology equipment vendor.
D)staff radiographer.
Q3) Exposure time settings should be maintained within ____ of the labeled setting.
A)+ 5%
B)+ 10%
C)+ 15%
D)0%
To view all questions and flashcards with answers, click on the resource link above.
Page 33
Chapter 32: Exposure Systems and Charts
Available Study Resources on Quizplus for this Chatper
39 Verified Questions
39 Flashcards
Source URL: https://quizplus.com/quiz/42177
Sample Questions
Q1) When using a variable kVp exposure technique system, A)a mAs value is identified for each body part and thickness.
B)small changes in patient thickness can be accommodated with small changes in mAs.
C)kVp varies as a function of patient thickness.
D)all of the above
Q2) When AEC systems are used, the selection of ____ is eliminated.
A)mA
B)exposure time
C)kVp
D)detectors
Q3) Technique systems function best when a single variable is permitted to vary.
A)True
B)False
Q4) Fixed kVp systems produce more scatter radiation than other systems. A)True
B)False
Q5) Once a technique chart has been established, the process is terminated.
A)True
B)False
34
To view all questions and flashcards with answers, click on the resource link above.
Chapter 33: Automatic Exposure Controls
Available Study Resources on Quizplus for this Chatper
31 Verified Questions
31 Flashcards
Source URL: https://quizplus.com/quiz/42178
Sample Questions
Q1) +2 used when N would have been optimum
A)phototiming
B)minimum response time
C)backup mAs
D)underexposed image
E)overexposed image
F)density controls
G)all three detectors
H)center detector only
Q2) Automatic exposure devices provide a diagnostic quality radiograph when the
A)anatomy of interest is positioned directly above the appropriate ionization chambers.
B)proper time is set.
C)correct focal spot is selected.
D)beam filtration is minimum.
Q3) Most AEC consoles permit activation of
A)all three cells simultaneously.
B)all three cells in any combination.
C)the outer cells when the center cell is inactivated.
D)the center cell and either outer cell.
To view all questions and flashcards with answers, click on the resource link above.
Page 35
Chapter 34: Exposure Conversion Problems
Available Study Resources on Quizplus for this Chatper
38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/42179
Sample Questions
Q1) A radiograph is produced at 10 mAs with a three-phase, high frequency generator.The film is repeated using a single phase,2-pulse generator.Calculate the new mAs.
Q2) A radiograph is produced at 10 mAs with a single-phase, 2-pulse generator.The film is repeated using a high frequency generator with a three-phase source of power..Calculate the new mAs.
Q3) A radiograph is produced using 10 mAs at a 40 in.distance.Calculate the new distance if 25 mAs is used.
Q4) A radiographic examination has been taken using the following exposure conditions:
400 mA, 70 ms, 80 kVp, 1,2 mm fs, 200 RS receptor, 12: grid, 44" SID
To increase the contrast, the most appropriate choice would be to
A)increase the mA to 500 and decrease time to 56 ms.
B)switch to the 0.8 mm focal spot.
C)switch to a 400 RS receptor and decrease the mAs.
D)switch to a 16:1 grid and increase mAs.
Q5) A radiograph is produced at 10 mAs with a high frequency generator.The film is repeated using a single-phase, 2-pulse generator.Calculate the new mAs.
To view all questions and flashcards with answers, click on the resource link above.
Page 36
Chapter 35: Mobile Radiography
Available Study Resources on Quizplus for this Chatper
34 Verified Questions
34 Flashcards
Source URL: https://quizplus.com/quiz/42180
Sample Questions
Q1) Proper tube-grid alignment is important during ____ radiography.
A)mobile
B)stationary
C)portable
D)all of the above
Q2) During optimal mobile radiography of the chest, the recommended SID is ____ inches.
A)72
B)56
C)40
D)36
Q3) The more advanced, full-power mobile units use ____ energy for a power supply.
A)solar
B)battery
C)thermal
D)alternating current
To view all questions and flashcards with answers, click on the resource link above.
Page 37
Chapter 36: Fluoroscopy
Available Study Resources on Quizplus for this Chatper
55 Verified Questions
55 Flashcards
Source URL: https://quizplus.com/quiz/42181
Sample Questions
Q1) Digital fluoroscopy is typically
A)a progressive, pulsed fluoroscopic exposure.
B)capable of producing higher contrast images.
C)capable of 256 shades of gray through 8-bit processing.
D)all of the above
Q2) Mobile fluoroscopic systems are different from fixed systems in that they
A)do not have a primary barrier.
B)do not use video displays.
C)have separate fluoroscopy and radiographic tubes.
D)have a minimum SOD of 12 inches.
Q3) The most commonly used fluoroscopic viewing system is A)mirrors.
B)real-time video monitors.
C)dry laser images.
D)videotape.
Q4) The input screen is ____ in shape.
A)oval
B)elliptical
C)concave
D)convex
To view all questions and flashcards with answers, click on the resource link above. Page 38
Chapter 37: Tomography and Digital Tomosynthesis
Available Study Resources on Quizplus for this Chatper
31 Verified Questions
31 Flashcards
Source URL: https://quizplus.com/quiz/42182
Sample Questions
Q1) When the movement of the tube and the image receptor are along a straight line, the tomographic motion is classified as A)linear.
B)circular.
C)elliptical.
D)trispiral.
Q2) should not exceed the section thickness
A)zonogram
B)panoramic tomography
C)40 degrees
D)focal plane
E)exposure amplitude
F)10 degrees or more
G)section interval
H)maximum blur
Q3) Terms used to refer to the tomographic image include A)cut.
B)section.
C)slice.
D)all of the above
To view all questions and flashcards with answers, click on the resource link above. Page 39
Chapter 38: Mammography
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/42183
Sample Questions
Q1) The anode material of choice for a mammography machine is
A)lead.
B)tungsten.
C)molybdenum.
D)none of the above
Q2) 24-30 inches
A)beryllium
B)tungsten
C)optimum kVp range
D)magnification imaging
E)microcalcifications
F)molybdenum
G)17-20 kev
H)Companie Generale de Radiographique
I)mammography SID
J)developed a dry process for mammography
K)rhodium
L)MQSA
M)NEXT
N)expected to become the mammography gold standard
To view all questions and flashcards with answers, click on the resource link above. Page 40
Chapter 39: Bone Densitometry
Available Study Resources on Quizplus for this Chatper
38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/42184
Sample Questions
Q1) General radiography is ineffective in measuring bone loss since as much as ______ of bone mass must be lost to be radiographically detected.
A)15%
B)30%
C)40%
D)60%
Q2) Quality control procedures with DXA systems
A)are done monthly.
B)utilize a standardized hip phantom for measurements.
C)are completed after each patient exam.
D)none of the above
Q3) DXA scanning of the forearm
A)is preferred for suspected hyperparathyroidism.
B)scans the non-dominant forearm.
C)includes the proximal row of carpal bones.
D)all of the above
To view all questions and flashcards with answers, click on the resource link above.
Chapter 40: Vascular Imaging Equipment
Available Study Resources on Quizplus for this Chatper
25 Verified Questions
25 Flashcards
Source URL: https://quizplus.com/quiz/42185
Sample Questions
Q1) Digital image receptors used in angiography
A)require a CCD for image capture.
B)are composed of selenium detector material.
C)acquire the images digitally in the detector material.
D)permit post-processing of images, unlike analog image intensifier detectors.
Q2) How many heat units are generated by a series of 10 exposures using 75 kVp, 300 mA, 0.15 sec.on a high frequency unit?
Q3) The amount of heat load an anode can tolerate for a sequence of exposures is known as
A)short-term loading ability.
B)continuous heat-loading ability.
C)tube-rate loading ability.
D)dose-dependent loading.
Q4) Vascular imaging generators should have the capacity to deliver ____ mA.
A)50
B)100
C)300
D)1,000
Q5) How many heat units are generated by a series of 15 exposures using 75 kVp, 400 mA, 150 ms sec.using a HF generator?
To view all questions and flashcards with answers, click on the resource link above. Page 42
Chapter 41: Computed Tomography
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/42186
Sample Questions
Q1) The localization image produced by the CT scanner is technically called a/an
A)volume rendered image.
B)scout film.
C)scanogram.
D)FOV image.
Q2) The CTDI dose measurement
A)is slice-based.
B)takes into account the total amount of irradiated tissue.
C)represents the average total dose to the patient during the examination.
D)measures entrance skin exposure (ESE).
Q3) A ____ artifact is caused by the presence of metal in the patient.
A)beam-hardening
B)ring
C)star
D)streak
Q4) CT image data is acquired in the
A)coronal plane and reconstructed in the axial plane .
B)transverse plane and reconstructed in any plane.
C)sagittal plane .
D)axial plane and reconstructed in the coronal plane.
To view all questions and flashcards with answers, click on the resource link above. Page 43
Chapter 42: Magnetic Resonance Imaging
Available Study Resources on Quizplus for this Chatper
52 Verified Questions
52 Flashcards
Source URL: https://quizplus.com/quiz/42187
Sample Questions
Q1) unit of magnetic field strength
A)Tesla
B)active shimming
C)resistive magnet
D)SE pulse sequence
E)gyromagnetic ratio
F)Faraday cage
G)voxel
H)cryogen
I)Larmor frequency
J)gradient coils
K)TE
L)precession
M)T<sub>2</sub> relaxation
N)GBCA
O)B<sub>0</sub>
P)NSF
To view all questions and flashcards with answers, click on the resource link above.
Page 44
Chapter 43: Nuclear Medicine
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/42188
Sample Questions
Q1) In order to achieve nuclear stability, a radionuclide may emit
A)beta particles.
B)gamma photons.
C)positrons.
D)all of the above
Q2) Historically, the discoverer of radioactivity was
A)Pierre and Marie Curie.
B)Michael Faraday.
C)Henry Becquerel.
D)Albert Einstein.
Q3) When one considers the many clinical applications of nuclear medicine studies, perhaps the singlemost distinction between radionuclide studies and radiographic studies centers around the fact that
A)nuclear studies have higher resolution and less dose to the patient.
B)CT and radiographic studies are more invasive to the patient.
C)radionuclide studies are generally functional or metabolic studies.
D)nuclear medicine exams are more economical and quicker to complete.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 44: Radiation Therapy
Available Study Resources on Quizplus for this Chatper
37 Verified Questions
37 Flashcards
Source URL: https://quizplus.com/quiz/42189
Sample Questions
Q1) The radiotherapy prescription includes
1)treatment field angles
2)protraction period
3)radiotherapist designated to deliver treatments
4)total dose administered
5)fractionalized dosages
6)patient's mental altitude
7)treatment techniques
8)treatment fields and dimensions
9)patient side effects
A)1, 3, 4, 5, 7, and 8
B)1, 2 4, 6, 8, and 9
C)1, 2, 4, 5, 7, and 8
D)2, 4, 5, 7, 8, and 9
Q2) Radiotherapy treatments
A)are treated as prescriptions.
B)require a physician's order.
C)start with a consultation.
D)all of the above
To view all questions and flashcards with answers, click on the resource link above. Page 46
Chapter 45: Diagnostic Medical Sonography
Available Study Resources on Quizplus for this Chatper
48 Verified Questions
48 Flashcards
Source URL: https://quizplus.com/quiz/42190
Sample Questions
Q1) High frequency transducers have
A)better resolution and less penetration.
B)better resolution and better penetration.
C)lower resolution and less penetration.
D)lower resolution and better penetration.
Q2) The relationship between ultrasound beam intensity
A)and power is inverse.
B)and power is direct, proportionately.
C)and amplitude is nonexistent.
D)and the transducer is unrelated
Q3) The ultrasound transducer has the ability to send out sound waves and listen for returning echoes.The time the transducer is sending signals is termed its A)capacitance.
B)echo response time.
C)duty factor.
D)use factor.
To view all questions and flashcards with answers, click on the resource link above.