Fall 07-08 Flashcards
which is the largest contributor to the average persons annual exposure from man made sources
diagnostic x-ray
in the average which of the following accounts for over 50% of the typical person’s annual radiation exposure
Radon
what makes x-ray potentially dangerous
they are ionizing
which of the following travels at less than the speed of light
radon
alpha particles are most harmful in people when they do what with them
inhale them
the first radiographic print was on what body part?
the hand
kV is the primary controlling factor for which of the following?
Contrast
where would you apply the inverse square law
when changing the tube distance
the initials FFD TFD and SID refer to what
the distance between the source of the x-ray and the film
what does P in the kVp stand for?
Peak
the number of electrons is controlled by the
low voltage circuit
what connects the transformer with the tube?
the cables
about what percent of the energy from the process of producing x-rays is given off as heat
99%
which is the minimum anode angle that can be used if you were going to take a 14 x 36 full spine film?
14 degrees
if you looked into the port of a used x-ray tube and saw that the entire surface of the anode had bumps what would best describe its condition
anode pitting
when x-rays are produced which of the following is responsible for the true attenuation of any part of the x-ray beam
the anode
which structure is responsible for confining the cloud of electrons
the focusing cup
the purpose of the collimator shutters is to
absorb unneeded x-rays
what is used to tell us that the x-ray beam is centered to the part being radiographed
the light and mirror
which is the most common reason that compensating filtration is used
the reduce film density
which of the following parts of the tube complex contains lead
the tube housing
what is the best way to identify patients films
a flash on label BEFORE processing
an acute exposure of four rads would probably have which effect on pregnancy females fetus
none
how many mrems have you been exposed to
100mrems
