WorksheetsX-ray emission
Total questions: 15
Worksheet time: 14mins
Compensating filters are radiation protection devices that using in maintaining image quality.
False
True
Increasing filtration increases the quality of the x-ray beam and decreases the quantity.
False
True
In mammography, the x-ray tube windows are made of molybdenum.
False
True
X-ray intensity is inversely proportional to mAs.
False
True
X-ray quantity is measured in:
mR
mGya
C
mAs
mAs is a measure of electrons that travel from anode to cathode to produce x-ray.
False
True
C (coulomb) is a measure of electric charges.
False
True
which of these options are correct:
1C = 1000mAs
mAs = 6.25×10¹⁸e
mC = mAs
mAs = 6.25×10¹⁵e
X-ray quality is the number of x-rays in the useful beam.
False
True
Factors affect both quality and quantity:
mAs
kVp
Distance
Filtration
The HVL of an X-ray beam is the thickness of absorbing material necessary to reduce the x-ray intensity to half of its original value .
False
True
"Bow-tie" filters are used in digital fluoroscopy to compensate the shape of the head or body .
False
True
When the distance from the source is increased:
x-ray quantity decrease
x-ray quality increase
x-ray quantity increase
no effect in x-ray quality
What is the term used to describe the ability of x-rays to penetrate deeper in tissue.
radiation exposure
HVL
penetrability
filtration
An examination require 100kVp, 10mAs at 180cm. If we want to reduce the exposure from 1.18mR to 0.29mR by controlling mAs, what will be the new mAs?
(ex. 1.753mAs --> 1.8)
(a)
