100 Question #3
What percentage of the incoming electron steam in the x-ray tube is actually converted to useful x-ray?
1%
How much exposure is a radiation health worker allowed per year?
50 mSv
The minimum study for a cervical spine x-ray examination consists of:
AP, lateral and open mouth
The central ray for the AP thoracic spine is directed to:
The center of the image receptor, which has been with the top edge 2 inches above the top of the patient's shoulders
Digital x-ray imaging doesn't need what?
a darkroom
The central ray for an AP lumbar spine view is directed at:
a point one inch inferior to a line between both iliac crests
If taking a right anterior oblique view of the cervical spine, the central ray must be:
angled 15 caudally
A high-contrast x-ray:
appears black and white
In North Carolina personal dosimeters are:
are required for 6-12 months to prove that little or no dose is being received by x-ray personnel
Which can be caused by ionizing radiation?
cancer damage to the developing fetus cataracts A&D
Radiographic film processors should be drained and fully cleaned:
every 3 to 4 weeks
What is the most common cause of reticulation?
exhausted fixer
The central ray for the lateral lumbar spine spot view is directed:
in the midline, 2 inch superior to the iliac crest
The intensity of radiation is:
inversely proportional to the square of the distance
Which is true?
kV governs the speed and penetration of the x-ray beam, while mAs governs the quantity or radiation
A patient is standing erect and facing the image receptor for a study of the lumbar spine. The x-ray beam strikes their backed such that the left side of the body is closer to the image receptor than the right side. What is the name of this position?
left anterior oblique
A line voltage compensator:
neighborhood variations in line voltage
Seeing a Scottie dog is an indicator of good posithing seen only in what x-ray view?
oblique lumbar spine view
Static artifacts appear on an x-ray image as a result of what?
pulling x-ray film out of the box too rapidly
The main reason why the x-ray tube fails is:
the filament burns out
Which of the following is not a property of x-ray?
they travel at a speed of 186,000 feeet per sceond they can penetrate most forms of matter they can affect photographic and x-ray film they cannot be seen, heard or felt
The reason that the x-ray grid with the Bucky reciprocates is:
to blur out grid out grid lines
The replenishment system for the automatic does what?
transports new chemistry into the main tanks in the processor
The opening in the center of a vertebra to allow the passage of the spinal cord is called:
vertebral foramen
New boxes of x-ray film should always be stored:
vertically