Question 1

You are going to take dental images on your patient.He is larger than average.What machine setting adjustment should you make prior to taking dental images?

Accepted Answer

A)  Increase kV.
B)  Increase mA.
C)  Increase impulses.
D)  You don't need to make any adjustments. C

Question 2

According to the inverse square law,the intensity of radiation is __________ proportional to the ______________ from the source of radiation.

Accepted Answer

A)  directly;distance
B)  directly;square of the distance
C)  inversely;distance
D)  inversely;square of the distance

Question 3

An image with "low" contrast

Accepted Answer

A)  is useful for the detection of periodontal or periapical disease and has many shades of gray.
B)  is useful for the detection and progression of dental caries and has many shades of gray.
C)  is useful for the detection of periodontal or periapical disease and has many black and white areas.
D)  is useful for the detection and progression of dental caries and has many black and white areas.

Question 4

You have been using a dental x-ray machine that has a 4-inch PID.Your new machine has an 8-inch PID.Given that all exposure factors remain the same,according to the inverse square law,the resultant beam would be ___________ as intense.

Accepted Answer

A)  four times
B)  twice
C)  half
D)  one quarter

Question 5

The quantity of the x-rays produced is controlled by

Accepted Answer

A)  voltage.
B)  kilovoltage.
C)  kilovoltage peak.
D)  milliamperage.

Question 6

In dental radiography,the term ________ is used to describe the mean energy or penetrating ability of the x-ray beam.

Accepted Answer

A)  quality
B)  quantity
C)  intensity
D)  wavelength

Question 7

In regard to increasing density

Accepted Answer

A)  an increase in either kV or mA will increase density.
B)  an increase in kV will increase density,but an increase in mA will not increase density.
C)  an increase in mA will increase density,but an increase in kV will not increase density.
D)  neither an increase in kV nor an increase in mA will increase density.

Question 8

Aluminum filters are used to remove _______-energy,________ wavelength x-rays.

Accepted Answer

A)  low;longer
B)  high;longer
C)  low;shorter
D)  high;shorter

Question 9

Which of the following statements is true of the use of voltage in dental x-ray equipment?

Accepted Answer

A)  Dental x-ray equipment requires the use of 3 to 5 volts.
B)  Dental x-ray equipment requires the use of less than 60 kilovolts.
C)  Dental x-ray equipment uses more than 70 kilovolts.
D)  Dental x-ray equipment requires the use of 60 to 70 kilovolts.

Question 10

When the kilovoltage is increased

Accepted Answer

A)  electrons move from the anode to the cathode with more speed.
B)  photons move from the anode to the cathode with more speed.
C)  electrons move from the cathode to the anode with more speed.
D)  photons move from the cathode to the anode with more speed.

Question 11

(1) Density is the overall darkness or blackness of a dental image.(2) When the kilovoltage is increased while other exposure factors remain constant,the resultant image exhibits a decreased density and appears lighter.

Accepted Answer

A)  Both statements are true.
B)  Both statements are false.
C)  The first statement is true;the second statement is false.
D)  The first statement is false;the second statement is true.

Question 12

When lower kilovoltage settings are used,an image with ____ will result.

Accepted Answer

A)  high contrast
B)  low contrast
C)  many shades of gray
D)  there is no change in contrast A

Question 13

Aluminum filters

Accepted Answer

A)  remove more penetrating x-rays from the beam.
B)  decrease the mean penetrating ability of the x-ray beam.
C)  remove high-energy x-rays from the beam.
D)  reduce the intensity of the x-ray beam.

Question 14

The kVp represents

Accepted Answer

A)  the mean x-ray tube voltage.
B)  the mean filament voltage.
C)  the maximum or peak voltage of an alternating current.
D)  the maximum or peak voltage of a direct current.

Question 15

You have taken your first dental image on your patient.The contrast is high and you are looking for periodontal disease.You are using a DC machine and you have control of your settings.You have a 60- to 70-kV range and a 6- to 8-mA range.You had the kV set at 60,the mA set at 7,and the impulses set at 6/100.While leaving all other settings the same,which setting would you adjust to create better contrast for detecting periodontal disease?

Accepted Answer

A)  Increase kV to 70.
B)  Increase mA to 8.
C)  Decrease mA to 6.
D)  Increase time to 7/100.

Question 16

When contrasted with the use of 70 kV for dental x-rays,the use of 60 kV produces

Accepted Answer

A)  more penetrating dental x-rays with longer wavelength.
B)  less penetrating dental x-rays with longer wavelength.
C)  more penetrating dental x-rays with shorter wavelength.
D)  less penetrating dental x-rays with shorter wavelength.

Question 17

Milliamperage regulates the _________ of electrons produced at the cathode filament.

Accepted Answer

A)  quality
B)  quantity
C)  speed
D)  power

Question 18

Exposure time is measured in

Accepted Answer

A)  kV.
B)  milliamperage.
C)  density.
D)  impulses.

Question 19

According to the inverse square law,if the length of the PID is halved,the resultant beam is ___________ as intense.

Accepted Answer

A)  four times
B)  twice
C)  half
D)  one quarter

Question 20

Which of the following statements is true of wavelength in reference to radiation?

Accepted Answer

A)  X-rays with shorter wavelength have less penetrating power.
B)  X-rays with longer wavelength have less penetrating power.
C)  X-rays with longer wavelength are less likely to be absorbed by matter.
D)  Milliamperage controls the wavelength and energy of the x-ray beam. B

Exam 3: Radiation Characteristics

You are going to take dental images on your patient.He is larger than average.What machine setting adjustment should you make prior to taking dental images?

Correct Answer
verified
C

According to the inverse square law,the intensity of radiation is proportional to the ____ from the source of radiation.

Correct Answer
verified

An image with "low" contrast

Correct Answer
verified

You have been using a dental x-ray machine that has a 4-inch PID.Your new machine has an 8-inch PID.Given that all exposure factors remain the same,according to the inverse square law,the resultant beam would be ___________ as intense.

Correct Answer
verified

The quantity of the x-rays produced is controlled by

Correct Answer
verified

In dental radiography,the term ________ is used to describe the mean energy or penetrating ability of the x-ray beam.

Correct Answer
verified

In regard to increasing density

Correct Answer
verified

Aluminum filters are used to remove _-energy,__ wavelength x-rays.

Correct Answer
verified

Which of the following statements is true of the use of voltage in dental x-ray equipment?

Correct Answer
verified

When the kilovoltage is increased

Correct Answer
verified

(1) Density is the overall darkness or blackness of a dental image.(2) When the kilovoltage is increased while other exposure factors remain constant,the resultant image exhibits a decreased density and appears lighter.

Correct Answer
verified

When lower kilovoltage settings are used,an image with ____ will result.

Correct Answer
verified
A

Aluminum filters

Correct Answer
verified

The kVp represents

Correct Answer
verified

Correct Answer
verified

When contrasted with the use of 70 kV for dental x-rays,the use of 60 kV produces

Correct Answer
verified

Milliamperage regulates the _________ of electrons produced at the cathode filament.

Correct Answer
verified

Exposure time is measured in

Correct Answer
verified

According to the inverse square law,if the length of the PID is halved,the resultant beam is ___________ as intense.

Correct Answer
verified

Which of the following statements is true of wavelength in reference to radiation?

Correct Answer
verified
B

Exam 3: Radiation Characteristics

You are going to take dental images on your patient.He is larger than average.What machine setting adjustment should you make prior to taking dental images?

Correct AnswerverifiedC

According to the inverse square law,the intensity of radiation is __________ proportional to the ______________ from the source of radiation.

Correct AnswerverifiedShow Answer

An image with "low" contrast

Correct AnswerverifiedShow Answer

You have been using a dental x-ray machine that has a 4-inch PID.Your new machine has an 8-inch PID.Given that all exposure factors remain the same,according to the inverse square law,the resultant beam would be ___________ as intense.

Correct AnswerverifiedShow Answer

The quantity of the x-rays produced is controlled by

Correct AnswerverifiedShow Answer

In dental radiography,the term ________ is used to describe the mean energy or penetrating ability of the x-ray beam.

Correct AnswerverifiedShow Answer

In regard to increasing density

Correct AnswerverifiedShow Answer

Aluminum filters are used to remove _______-energy,________ wavelength x-rays.

Correct AnswerverifiedShow Answer

Which of the following statements is true of the use of voltage in dental x-ray equipment?

Correct AnswerverifiedShow Answer

When the kilovoltage is increased

Correct AnswerverifiedShow Answer

(1) Density is the overall darkness or blackness of a dental image.(2) When the kilovoltage is increased while other exposure factors remain constant,the resultant image exhibits a decreased density and appears lighter.

Correct AnswerverifiedShow Answer

When lower kilovoltage settings are used,an image with ____ will result.

Correct AnswerverifiedA

Aluminum filters

Correct AnswerverifiedShow Answer

The kVp represents

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When contrasted with the use of 70 kV for dental x-rays,the use of 60 kV produces

Correct AnswerverifiedShow Answer

Milliamperage regulates the _________ of electrons produced at the cathode filament.

Correct AnswerverifiedShow Answer

Exposure time is measured in

Correct AnswerverifiedShow Answer

According to the inverse square law,if the length of the PID is halved,the resultant beam is ___________ as intense.

Correct AnswerverifiedShow Answer

Which of the following statements is true of wavelength in reference to radiation?

Correct AnswerverifiedB

Correct Answer
verified
C

According to the inverse square law,the intensity of radiation is proportional to the ____ from the source of radiation.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Aluminum filters are used to remove _-energy,__ wavelength x-rays.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
A

Correct Answer
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Correct Answer
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Correct Answer
verified
B