ARRT Registry Exam review
"Res ipsa loquitur" method... - ANS-the factor speaks for itself
"Respondeat advanced" approach... - ANS-allow the grasp solution
A 15% growth in kVp, maintaining all other factors the identical, will bring about a _________
of radiographic receptor publicity.
A. Doubling
b. Halfing - ANS-a. Doubling
a 60 cycle AC generator will produce ___ pulses of electrical modern-day in line with 2d.
A. One hundred twenty
b. 90
c. 60
d. 30 - ANS-a. One hundred twenty
a body at rest or in uniform motion remains inside the same kingdom except a pressure is
implemented describes what?
A. A=F/m
b. For each movement there is a reaction
c. Newton's first law of movement
d. Coulomb's Law - ANS-c. Newton's first law of motion
A bremsstrahlung interplay happens among an incident electron and
a. Outer shell electron
b. Inner shell electron
c. Nucleus of the atom
d. Neutron of the atom - ANS-c. Nucleus of the atom
(A bremsstrahlung interplay is the interaction between an incident electron and an atom of
tungsten with inside the anode)
A CT scanogram may be used for which of the subsequent functions?
A. Bone survey
b. Lengthy bone size
c. Bone age
d. Tender tissue neck - ANS-b. Lengthy bone dimension
a detector detail (DEL) length of 200 microns will produce how a whole lot spatial resolution?
A. 2.Five line pairs in step with millimeter
b. Five line pairs per millimeter
c. 7.Five line pairs consistent with millimeter
,d. 10 line pairs in line with millimeter - ANS-a. 2.5 line pairs in step with millimeter
(a micron is 1/one million of a meter. There are 1,000 microns in a millimeter. Five, 2
hundred micron detectors, ought to fit in a millimeter. It takes two detectors to make a line
pair, so the spatial resolution might be 2.5 line pairs in keeping with millimeter)
A flat panel detector is uncovered with not anything among the xray tube and the detector.
The pixel readings of five different areas of hobby across the detector are averaged and as
compared. What quality manage check became completed?
A. Detectability
b. Linearity
c. Repeatability
d. Uniformity - ANS-d. Uniformity
A shape of Acute Radiation Syndrome (ARS) referred to as Gastrointestinal Syndrome will
occur at a dose threshold level of:
a. 10 Gy
b. .05 Gy
c. 50 Gy
d. 1 Gy - ANS-a. 10 Gy
(Gastrointestinal Syndrome will best occur at dose threshold tiers of 10 Gy. It is
characterized through the destruction of the intestinal tract, main to diarrhea and
dehydration. Victims of Gastrointestinal Syndrome aren't anticipated to live on)
A lateral projection of the thoracic spine requires a respiratory approach of at the least how
many seconds?
A. 1
b. 3
c. 5
d. 7 - ANS-b. Three
a mild radiograph can be due to which of the subsequent?
1. Grid cutoff
2. SID too low
three. Grid ratio too low
a. 1 most effective
b. 2 simplest
c. 3 simplest
d. 1 & 3 simplest - ANS-a. 1 most effective
(grid cutoff is when the grid is misaligned with the xray beam and it absorbs the number one
xrays, inflicting the image to be a great deal lighter than predicted)
A new x-ray unit become mounted at a local hospital. The engineering branch had to
understand the full voltage so as to properly power the unit. On one side of the x-ray unit
there has been information pointing out that the unit's circuit had 250 A and 2,500 ohms.
Using this information, calculate the voltage. - ANS-625,000 Volts
,(The total voltage is calculated as: 250 A x 2,500 ohms = 625,000 V)
a non-grid calls for 15 mAs. How a whole lot mAs is wanted if a 15:1 grid ratio is used?
A. 15 mAs
b. 30 mAs
c. Forty five mAs
d. 60 mAs - ANS-b. 30 mAs
(a 5:1 grid requires 2X extra mAs to catch up on the lack of exposure due to the scatter
radiation this is absorbed)
A affected person within the first degrees of shock might show which of the subsequent
signs and symptoms?
A. Fast & shallow respirations, falling blood strain, unconsciousness.
B. Elevated respirations, anxiety tiers increase, pores and skin is bloodless & clammy.
C. Blood pressure falls, tachycardia.
D. Renal failure, chest pain. - ANS-b. Multiplied respirations, anxiety degrees increase,
pores and skin is cold & clammy.
A patient acquired a thyroid ablation treatment the use of an intravenously injected
radionuclide. If the absorbed dose to the thyroid is 0.59 Gy, calculate the effective dose.
Assume the thyroid has a tissue-weighting issue of zero.04 and the emitted radiation has a
radiation-weighting component of 1.Zero.
A. Zero.Fifty nine Sievert
b. Zero.0236 Sievert
c. 14.76 Sievert
d. Zero.59 Millisievert - ANS-b. Zero.0236 Sievert
(Effective Dose is same to D x WR x WT. For this question, 0.Fifty nine Gy x 1 x zero.04 =
zero.0236 Sv. Remember that once absorbed dose is converted to effective dose, the
devices need to be modified from grey to Sievert)
A patient restraint:
1. Is commonly in use before the affected person arrives on the radiology department.
2. Might encompass using tape to assist a infant stay nevertheless.
Three. Might consist of a vest with straps which might be tied to stretcher.
A. 1 & 2 best
b. 1 & three only
c. 2 & 3 handiest
d. 1, 2, & 3 - ANS-b. 1 & three simplest
a patient suddenly has difficulty breathing, what is the first thing a radiographer must do?
A. Lie the patient supine
b. Call for help
c. Administer oxygen
d. Administer CPR - ANS-b. Call for assist
a affected person with a head damage ought to remain in what function? - ANS-semi-erect
, A process used to become aware of the useful pixels values within the virtual picture is
referred to as:
a. Histogram evaluation
b. Rescaling
c. Lookup Table modifications
d. Digitization - ANS-a. Histogram analysis
(After the x-ray exposure is made, there are 3 adjustments made to the histogram earlier
than the picture is displayed. 1) Histogram analysis identifies the useful pixels ("values of
interest"), which might be used for processing. 2) Rescaling adjusts the pixel values to match
the regular histogram of the body part and regulate for small exposure errors. 3) A Lookup
Table is used to offer the photograph simply the proper quantity of brightness and contrast)
A radiation worker inhales a massive extent of an alpha-emitting radon gasoline (WR = 20),
resulting in an absorbed dose of 1.02 Gy to the lungs. Calculate the equal dose.
A. 20.Four Sv
b. 1.02 Gy
c. 2448 mSv
d. 1.02 mGy - ANS-a. 20.Four Sv
(Equivalent Dose is calculated as D x WR . For this question, EqD = 1.02 Gy x 20 = 20.4 Sv.
Remember that when absorbed dose is transformed to equal dose, the units exchange from
Gray to Sievert.)
a sampling frequency of 10 pixels per millimeter would produce how a whole lot spatial
resolution?
A. 1 line pair consistent with millimeter
b. 5 line pairs in keeping with millimeter
c. 10 line pairs consistent with millimeter
d. 20 line pairs in keeping with millimeter - ANS-b. Five line pairs in step with millimeter
A collection of x-ray exposures results in a affected person's skin absorbing 2.Zero joules of
strength. The exposed place of pores and skin has a mass of 0.5 kilograms. Calculate the
absorbed dose to the pores and skin.
A. 4 Gy
b. 1 Gy
c. 0.25 Gy
d. 2.5 Gy - ANS-a. Four Gy
(Absorbed dose is identical to joules consistent with kilogram and defined in devices of Gray.
For this question, the absorbed dose is: 2.0 J / 0.5 kg = 4 Gy)
A Swan-Ganz catheter is a(n):
a. Urinary catheter
b. Chest tube
c. Nasogastric catheter
d. Angio catheter - ANS-d. Angio catheter
"Res ipsa loquitur" method... - ANS-the factor speaks for itself
"Respondeat advanced" approach... - ANS-allow the grasp solution
A 15% growth in kVp, maintaining all other factors the identical, will bring about a _________
of radiographic receptor publicity.
A. Doubling
b. Halfing - ANS-a. Doubling
a 60 cycle AC generator will produce ___ pulses of electrical modern-day in line with 2d.
A. One hundred twenty
b. 90
c. 60
d. 30 - ANS-a. One hundred twenty
a body at rest or in uniform motion remains inside the same kingdom except a pressure is
implemented describes what?
A. A=F/m
b. For each movement there is a reaction
c. Newton's first law of movement
d. Coulomb's Law - ANS-c. Newton's first law of motion
A bremsstrahlung interplay happens among an incident electron and
a. Outer shell electron
b. Inner shell electron
c. Nucleus of the atom
d. Neutron of the atom - ANS-c. Nucleus of the atom
(A bremsstrahlung interplay is the interaction between an incident electron and an atom of
tungsten with inside the anode)
A CT scanogram may be used for which of the subsequent functions?
A. Bone survey
b. Lengthy bone size
c. Bone age
d. Tender tissue neck - ANS-b. Lengthy bone dimension
a detector detail (DEL) length of 200 microns will produce how a whole lot spatial resolution?
A. 2.Five line pairs in step with millimeter
b. Five line pairs per millimeter
c. 7.Five line pairs consistent with millimeter
,d. 10 line pairs in line with millimeter - ANS-a. 2.5 line pairs in step with millimeter
(a micron is 1/one million of a meter. There are 1,000 microns in a millimeter. Five, 2
hundred micron detectors, ought to fit in a millimeter. It takes two detectors to make a line
pair, so the spatial resolution might be 2.5 line pairs in keeping with millimeter)
A flat panel detector is uncovered with not anything among the xray tube and the detector.
The pixel readings of five different areas of hobby across the detector are averaged and as
compared. What quality manage check became completed?
A. Detectability
b. Linearity
c. Repeatability
d. Uniformity - ANS-d. Uniformity
A shape of Acute Radiation Syndrome (ARS) referred to as Gastrointestinal Syndrome will
occur at a dose threshold level of:
a. 10 Gy
b. .05 Gy
c. 50 Gy
d. 1 Gy - ANS-a. 10 Gy
(Gastrointestinal Syndrome will best occur at dose threshold tiers of 10 Gy. It is
characterized through the destruction of the intestinal tract, main to diarrhea and
dehydration. Victims of Gastrointestinal Syndrome aren't anticipated to live on)
A lateral projection of the thoracic spine requires a respiratory approach of at the least how
many seconds?
A. 1
b. 3
c. 5
d. 7 - ANS-b. Three
a mild radiograph can be due to which of the subsequent?
1. Grid cutoff
2. SID too low
three. Grid ratio too low
a. 1 most effective
b. 2 simplest
c. 3 simplest
d. 1 & 3 simplest - ANS-a. 1 most effective
(grid cutoff is when the grid is misaligned with the xray beam and it absorbs the number one
xrays, inflicting the image to be a great deal lighter than predicted)
A new x-ray unit become mounted at a local hospital. The engineering branch had to
understand the full voltage so as to properly power the unit. On one side of the x-ray unit
there has been information pointing out that the unit's circuit had 250 A and 2,500 ohms.
Using this information, calculate the voltage. - ANS-625,000 Volts
,(The total voltage is calculated as: 250 A x 2,500 ohms = 625,000 V)
a non-grid calls for 15 mAs. How a whole lot mAs is wanted if a 15:1 grid ratio is used?
A. 15 mAs
b. 30 mAs
c. Forty five mAs
d. 60 mAs - ANS-b. 30 mAs
(a 5:1 grid requires 2X extra mAs to catch up on the lack of exposure due to the scatter
radiation this is absorbed)
A affected person within the first degrees of shock might show which of the subsequent
signs and symptoms?
A. Fast & shallow respirations, falling blood strain, unconsciousness.
B. Elevated respirations, anxiety tiers increase, pores and skin is bloodless & clammy.
C. Blood pressure falls, tachycardia.
D. Renal failure, chest pain. - ANS-b. Multiplied respirations, anxiety degrees increase,
pores and skin is cold & clammy.
A patient acquired a thyroid ablation treatment the use of an intravenously injected
radionuclide. If the absorbed dose to the thyroid is 0.59 Gy, calculate the effective dose.
Assume the thyroid has a tissue-weighting issue of zero.04 and the emitted radiation has a
radiation-weighting component of 1.Zero.
A. Zero.Fifty nine Sievert
b. Zero.0236 Sievert
c. 14.76 Sievert
d. Zero.59 Millisievert - ANS-b. Zero.0236 Sievert
(Effective Dose is same to D x WR x WT. For this question, 0.Fifty nine Gy x 1 x zero.04 =
zero.0236 Sv. Remember that once absorbed dose is converted to effective dose, the
devices need to be modified from grey to Sievert)
A patient restraint:
1. Is commonly in use before the affected person arrives on the radiology department.
2. Might encompass using tape to assist a infant stay nevertheless.
Three. Might consist of a vest with straps which might be tied to stretcher.
A. 1 & 2 best
b. 1 & three only
c. 2 & 3 handiest
d. 1, 2, & 3 - ANS-b. 1 & three simplest
a patient suddenly has difficulty breathing, what is the first thing a radiographer must do?
A. Lie the patient supine
b. Call for help
c. Administer oxygen
d. Administer CPR - ANS-b. Call for assist
a affected person with a head damage ought to remain in what function? - ANS-semi-erect
, A process used to become aware of the useful pixels values within the virtual picture is
referred to as:
a. Histogram evaluation
b. Rescaling
c. Lookup Table modifications
d. Digitization - ANS-a. Histogram analysis
(After the x-ray exposure is made, there are 3 adjustments made to the histogram earlier
than the picture is displayed. 1) Histogram analysis identifies the useful pixels ("values of
interest"), which might be used for processing. 2) Rescaling adjusts the pixel values to match
the regular histogram of the body part and regulate for small exposure errors. 3) A Lookup
Table is used to offer the photograph simply the proper quantity of brightness and contrast)
A radiation worker inhales a massive extent of an alpha-emitting radon gasoline (WR = 20),
resulting in an absorbed dose of 1.02 Gy to the lungs. Calculate the equal dose.
A. 20.Four Sv
b. 1.02 Gy
c. 2448 mSv
d. 1.02 mGy - ANS-a. 20.Four Sv
(Equivalent Dose is calculated as D x WR . For this question, EqD = 1.02 Gy x 20 = 20.4 Sv.
Remember that when absorbed dose is transformed to equal dose, the units exchange from
Gray to Sievert.)
a sampling frequency of 10 pixels per millimeter would produce how a whole lot spatial
resolution?
A. 1 line pair consistent with millimeter
b. 5 line pairs in keeping with millimeter
c. 10 line pairs consistent with millimeter
d. 20 line pairs in keeping with millimeter - ANS-b. Five line pairs in step with millimeter
A collection of x-ray exposures results in a affected person's skin absorbing 2.Zero joules of
strength. The exposed place of pores and skin has a mass of 0.5 kilograms. Calculate the
absorbed dose to the pores and skin.
A. 4 Gy
b. 1 Gy
c. 0.25 Gy
d. 2.5 Gy - ANS-a. Four Gy
(Absorbed dose is identical to joules consistent with kilogram and defined in devices of Gray.
For this question, the absorbed dose is: 2.0 J / 0.5 kg = 4 Gy)
A Swan-Ganz catheter is a(n):
a. Urinary catheter
b. Chest tube
c. Nasogastric catheter
d. Angio catheter - ANS-d. Angio catheter
