MIDTERM QUIZ Flashcards
true or false
ever since kv units become superseded by the megavoltage units, they were no longer used and become extinct
false
co60 machines are of what classification of EBRT units according to energy range
megavoltage unit
true or false
LINAC is a machine that makes use of radioisotopes
false
it is a megavoltage machine invented by Ernest Lawrence in 1932
cyclotron
if an RT unit is operating at 250 kV, what is it classified as
orthovoltage
it is an electrostatic accelerator that produces high energy xrays at about 12mv
van de graaff accelerator
it is a megavoltage unit developed by Dwight Kerst in 1941
betatron
it is the dose gradient outside the useful radiation beam
penumbra
main photon radiation produced by co60
gamma ray
which of the following energies is most likely for a linac?
6mv
it is a feature of the LINAC gantry which projects light that is identical to the radiation beam in size, shape and central axis and is used to align the patient’s treatment area to the beam
light field
LINAC generation with extremely large and bulky units using low energy photons with limited gantry motions
1st gen
LINAC generation which is the first that can rotate 360 around the central axis
2nd gen
which area is the gantry of the LINAC located?
treatment room
part of the treatment head that shapes the beam and defines the treatment size
collimator
