BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
REVIEW BASIC MACHINE OPERATOR
CLASS DR HILDA BARBA State Test
Questions With Correct Answers
Axial calcaneus centering point - answer✔✔base of 3rd metatarsal; 40 DEGREE ANGLE
through malleolus level
prime factors of exposure in radiography - answer✔✔Milliamperage, exposure time, kilovoltage,
and distance (SID)
The unit used to indicate the total quantity of x-rays in an exposure - answer✔✔. mAs
If an image were made using 500 mA, 0.1 seconds, and 75 kVp, what would the mAs be for this
exposure? - answer✔✔B. 50 mAs
What prime factor is related to density - answer✔✔kvp and mAs
when increase the Kvp - answer✔✔decrease the contrast
when decrese the kvp - answer✔✔increase the contrast
increased radiographic density - answer✔✔Increased mA
Increased exposure time
Increased kVp
If the radiographic image is overexposed, which of the following changes in exposure factors
should be used to correct the problem - answer✔✔Decrease mAs
the distance between the target and the IR IS - answer✔✔SID
SOURCE IMAGE DISTANCE
high contrast is produce by - answer✔✔low kilovoltage , by lowering the KVP
when you increase the contrast ,and increase the latitude - answer✔✔you need to lower the Kvp
,BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
when you decrease the contrast , and decrease the latitude - answer✔✔you need to increase the
Kvp
exposure time controls - answer✔✔the duration of the exposure
exposure time - answer✔✔controls the quantity of X ray produce
The distance between the tube target and the IR is termed - answer✔✔SID source image distance
The relationship between SID and beam intensity is expressed in - answer✔✔inverse square law.
Inverse square law - answer✔✔the intensity is inversily propotional to the square of the distance
when increase the distance - answer✔✔decrease the intensity
when decrease the distance - answer✔✔increase the intensity
The inverse square law governs the relationship between - answer✔✔x-ray beam intensity and
distance
The inverse square law states that the intensity of the x-ray beam is ______ to the square of the
distance. - answer✔✔inversely proportional
four primary aspects of radiographic quality - answer✔✔Density, contrast, distortion, and
recorded detail
The overall darkness, or blackness, within a radiographic image is referred to as -
answer✔✔Density
The mass density of the radiographic subject is referred to as: - answer✔✔tissue density
mA milliamperage - answer✔✔controlled by filament heat
mA milliamperage - answer✔✔control the rate of flow of electrons across the tube
mA milliamperage - answer✔✔rate of x ray production
Density is primarily controlled by varying the - answer✔✔mAs
The difference in density between adjacent portions of the image is called -
answer✔✔radiographic contrast
Contrast is primarily controlled by altering the - answer✔✔Kvp
. When an image demonstrates considerable differences between the densities, the image is
described as - answer✔✔high contrast.
When an image demonstrates only a few densities, but there are large differences between the
adjacent densities, the image is described as having - answer✔✔short Scale contrast
, BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
Hand and foot are - answer✔✔high contrast -short scale
Low level of contrast produced by high kilovoltage is called - answer✔✔long Scale low contrast
A low kVp setting produces an image with - answer✔✔a short scale of contrast
Higher kVp settings produce images with - answer✔✔long-scale contrast
low contrast
When it is necessary to differentiate tissues with similar tissue densities, which of the following
image quality factors is most desirable - answer✔✔High contrast
Generalized unwanted exposure on the image is called - answer✔✔Fog
Fog causes - answer✔✔Scatter radiation
improper film storage
poor processing
Subject contrast - answer✔✔tissue density and kvp used
Fog affects radiographic quality by causing - answer✔✔decreased contrast
A variation in the size or shape of the image as compared with the subject it represents is called -
answer✔✔Distortion
Another name for size distortion - answer✔✔Magnification
The distance between the subject or part and the IR is referred to as - answer✔✔object-image
distance (OID
Increase OID - answer✔✔Increase magnification
two types of distortion - answer✔✔Size = magnification
Shape = foreshortening
and elongation
. The unsharp, "fuzzy" appearance of margins of structures within the radiographic image is
called - answer✔✔Penumbra
A change from the small focal spot to the large focal spot results - answer✔✔decreased image
sharpness
With a large OID, the reduction of excessive magnification is accomplished by -
answer✔✔increasing the SID
REVIEW BASIC MACHINE OPERATOR
CLASS DR HILDA BARBA State Test
Questions With Correct Answers
Axial calcaneus centering point - answer✔✔base of 3rd metatarsal; 40 DEGREE ANGLE
through malleolus level
prime factors of exposure in radiography - answer✔✔Milliamperage, exposure time, kilovoltage,
and distance (SID)
The unit used to indicate the total quantity of x-rays in an exposure - answer✔✔. mAs
If an image were made using 500 mA, 0.1 seconds, and 75 kVp, what would the mAs be for this
exposure? - answer✔✔B. 50 mAs
What prime factor is related to density - answer✔✔kvp and mAs
when increase the Kvp - answer✔✔decrease the contrast
when decrese the kvp - answer✔✔increase the contrast
increased radiographic density - answer✔✔Increased mA
Increased exposure time
Increased kVp
If the radiographic image is overexposed, which of the following changes in exposure factors
should be used to correct the problem - answer✔✔Decrease mAs
the distance between the target and the IR IS - answer✔✔SID
SOURCE IMAGE DISTANCE
high contrast is produce by - answer✔✔low kilovoltage , by lowering the KVP
when you increase the contrast ,and increase the latitude - answer✔✔you need to lower the Kvp
,BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
when you decrease the contrast , and decrease the latitude - answer✔✔you need to increase the
Kvp
exposure time controls - answer✔✔the duration of the exposure
exposure time - answer✔✔controls the quantity of X ray produce
The distance between the tube target and the IR is termed - answer✔✔SID source image distance
The relationship between SID and beam intensity is expressed in - answer✔✔inverse square law.
Inverse square law - answer✔✔the intensity is inversily propotional to the square of the distance
when increase the distance - answer✔✔decrease the intensity
when decrease the distance - answer✔✔increase the intensity
The inverse square law governs the relationship between - answer✔✔x-ray beam intensity and
distance
The inverse square law states that the intensity of the x-ray beam is ______ to the square of the
distance. - answer✔✔inversely proportional
four primary aspects of radiographic quality - answer✔✔Density, contrast, distortion, and
recorded detail
The overall darkness, or blackness, within a radiographic image is referred to as -
answer✔✔Density
The mass density of the radiographic subject is referred to as: - answer✔✔tissue density
mA milliamperage - answer✔✔controlled by filament heat
mA milliamperage - answer✔✔control the rate of flow of electrons across the tube
mA milliamperage - answer✔✔rate of x ray production
Density is primarily controlled by varying the - answer✔✔mAs
The difference in density between adjacent portions of the image is called -
answer✔✔radiographic contrast
Contrast is primarily controlled by altering the - answer✔✔Kvp
. When an image demonstrates considerable differences between the densities, the image is
described as - answer✔✔high contrast.
When an image demonstrates only a few densities, but there are large differences between the
adjacent densities, the image is described as having - answer✔✔short Scale contrast
, BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
Hand and foot are - answer✔✔high contrast -short scale
Low level of contrast produced by high kilovoltage is called - answer✔✔long Scale low contrast
A low kVp setting produces an image with - answer✔✔a short scale of contrast
Higher kVp settings produce images with - answer✔✔long-scale contrast
low contrast
When it is necessary to differentiate tissues with similar tissue densities, which of the following
image quality factors is most desirable - answer✔✔High contrast
Generalized unwanted exposure on the image is called - answer✔✔Fog
Fog causes - answer✔✔Scatter radiation
improper film storage
poor processing
Subject contrast - answer✔✔tissue density and kvp used
Fog affects radiographic quality by causing - answer✔✔decreased contrast
A variation in the size or shape of the image as compared with the subject it represents is called -
answer✔✔Distortion
Another name for size distortion - answer✔✔Magnification
The distance between the subject or part and the IR is referred to as - answer✔✔object-image
distance (OID
Increase OID - answer✔✔Increase magnification
two types of distortion - answer✔✔Size = magnification
Shape = foreshortening
and elongation
. The unsharp, "fuzzy" appearance of margins of structures within the radiographic image is
called - answer✔✔Penumbra
A change from the small focal spot to the large focal spot results - answer✔✔decreased image
sharpness
With a large OID, the reduction of excessive magnification is accomplished by -
answer✔✔increasing the SID
