rads 1 Flashcards
(32 cards)
kilovoltage is primarily responsible for
the hardness of the x-ray beam and its penetration
milliamperarge is responsible for the intensity of the radiation, which
translates to the density on the image
which type of tissue absorbs the most radiation
bone
since bone absorbs the most radiation, what does this show up as on your radiograph
white
which of the following kV will produce more scatter and secondary radiation
40, 60, 70, 110
110kV
what does the milliamperage control on the X-ray machine affect
the amount of radiation that is produced and the current to the cathode
the degree of blackness on a radiograph is described as
radiographic density
when obtaining a radiograph, the thickest part of the area of interest is placed toward what
the cathode end of the X-ray tube
when the thick area of interest is placed toward cathode, known as?
heel effect
all are components of the xray tube except
cathode, anode, grid, tungsten filament
grid
what do we use to measure our patient when looking to obtain our kVp setting
caliper
what does it mean to collimate the xray beam
to limit the beam exposure just to the area of interest within the film
a grid is a series of thin, linear strips of alternating radio dense and radiolucent material. of what are those radio dense strips made
lead
for what are grids used on an x ray machine
to decrease scatter radiation and to increase the contrast on the radiograph
where is the grid located in reference to an xray machine
between the patient and the cassette
from a legal standpoint, how long does the radiology log need to be kept
3-5 years
with film based imaging, which of the following are receptor components
cassette, film, intensifying screen
labeling
name of pt and owner, date, name of practice, radiographers initials
what are the intensifying screens
cover the inside of the cassette, coated with phosphors
what is the cassette
film holder, protects the screens and film from physical damage
what are grids
absorb scatter radiation, made of lead and aluminum
what is the collimator
controls the size of the xray beam
what happens if you have too much mA
overall blackness of the rad
kVp affects?
both density and penetrating power
translates to contrast
