Font size
WorksheetsVTA140 Week 4 Quiz Review
Total questions: 34
Worksheet time: 17mins
What was the name of the scientist that discovered x-rays?
Albert Einstein
Wilhelm Roentgen
John Adams
Pavlov
Who was one of the first groups to begin using x-rays?
Radiologists
Pediatricians
Battlefield Physicians
Anesthesiologists
Which radiation safety device measures the amount of radiation a user is exposed to over their lifetime?
Doppler badge
Radiation badge
X-ray badge
Dosimetry badge
The National Council on Radiation Protection and Measurements recommends that occupationally exposed persons should not receive radiation that exceeds __________ rem/year.
25
1
0.5
5
The apron worn by veterinary staff while taking x-rays is lined with:
steel
lead
aluminum
mercury
The safety device worn around a staff member's neck while taking x-rays is protective of which part of the body?
Tonsils
Thyroid
Cervical spine
Lymph nodes
How does the assistant check lead gloves to determine whether they are preventing exposure to ionizing radiation?
They take x-rays of the gloves
They wear a radiation monitoring badge under their glove
They send the gloves to a vendor for testing
They visually examine the seams for cracks
Which end of the x-ray tube is the positive end?
Anode
Cathode
Which end of the x-ray tube is the negative end?
Anode
Cathode
X-rays are generated when electrons from the (a) collide with the (b) .
Cathode; anode
Beryllium window; tungsten filament
Tungsten filament; beryllium window
Anode; cathode
The filtered x-ray beam that enters the patient is called the...
Initial beam
Dosimeter
Primary beam
x-ray
The degree of "blackness" on a radiograph, created by black metallic silver deposits in the film, refers to which of the following:
density
contrast
kVP
mAs
X-rays with many shades of gray are said to have a(n)
long scale of contrast
low density
short scale of contrast
high density
What color will air appear on a radiograph?
clear
white
black
gray
What color will metal appear on a radiograph?
black
clear
gray
white
The term "radiolucent" means
black
white
The term "radiopaque" means
black
white
Which structure is radiopaque?
a tooth
the lungs
the skin
the heart
Looking at a radiograph, the black areas are places where...
The x-ray beam has been blocked by patient tissue
The x-ray beam has passed through patient tissue
The x-ray beam has been affected by the penumbra effect
The x-ray beam has been absorbed by patient tissue
What would make a radiograph blurry?
A moving object
decreased kVP
Increased mAs
A short exposure time
The product of milliamperage and exposure time (seconds) is the:
kVP
mAs
OID
SID
The voltage applied between the cathode and the anode is:
mAs
OID
SID
kVP
The proper kilovoltage peak (kVP) needed to produce a diagnostic image is dependent on:
the distance from the object to the image
the distance from the source to the target
the amount of exposure time available
the thickness of the object imaged
In most procedures, the Source-Image Distance (SID) is held constant at:
28 to 32 inches
12 to 15 inches
36 to 40 inches
6 to 10 inches
The (a) is the result of unequal distribution of the x-ray beam intensity emitted from the x-ray tube along the cathode-anode axis.
Film Density
Heel effect
Kilovoltage peak
Object-Image distance
Thoracic radiographs should be taken on expiration.
True
False
Cranial landmark for an abdominal radiograph is
the first vertebrae
greater trochanter of femur
thoracic inlet
xiphoid process (sternum)
Which of these is the least dense?
Air
Metal
Fat
Bone
Soft tissue
Which of these is the densest?
Air
Bone
Metal
Fat
Soft tissue
The term "radiolucent" means
White, absorbs more radiation
Black, allows more radiation to pass through
The term "radiopaque" means:
Black, allows more radiation to pass through
White, absorbs more radiation
What color will metal appear on a radiograph?
Clear
Gray
White
Black
What is kilovoltage peak (kVp)?
The number of electrons
The speed of the electrons
The amount of time the electrons are in motion
The angle of the beam
This occurs when the object is not parallel to the film.
Penumbra effect
SID
OID
Distortion
