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operator failure, patient movement,and equipment failure

list 3 main reasons for repeating xrays

Operator failure, and equipment failure

what 2 reasons for repeating xrays can be prevented

single phase

what type of mechine is a spinning top test done on?

rectifier has gone bad

for the spinning top test exactly 6 dots on the film mean?

the timer and rectifier are are working fine

if there are exactly 12 dots on the film?

the timer may need adjustment

if there are fewer than 12 dots on the film?


how many times should the spinning top test be performed?


abnormal MA meter fluctuation means you have lost what in the xray tube?

50 and 60 KVP

what 2 values of kvp do we use for the kvp stability test?


if an artifact is dark it is on what side of the cassette?

MAS, time and distance

what are the controlling factors for density?


controlling factor of contrast?

long scale contrast

high kvp and low MA produces what kind of contrast?

short scale contrast

low kvp and high MA produces

failure to set exposure factors properly,failure to position pt correctly, failure to observe the pt for movement, and failure to process the film correctly

what are common operator errors

abnormal MA meter fluctuation

what happens when the vacume is lost in the tube

produce a very dark film and the MA meter fluctuates abnormally

what are signs the timer has gone bad

rectifier and timer

if film comes out to light and there is normal meter fluctuation what has gone bad?

MAS reciprocity test

test that uses the penetrameter to compare the function of different MA settings and the timer

beam restriction

when the pt is postioned properly and and the tube is aligned w/ the film and a clear streak is down one side of the film call maintenance to align collimator

short scale contrast

many blacks and whites on the film, but very few shades of gray. this would be found on extremity films

long scale contrast

is many shades of gray. this is found on larger thicker body parts (chest)


are devices used to measure the thickness of a body part

back up timer set manually for 1/2 sec

what do you use with a phototimer?


when a xray has an unwanted mark on the film

camels hair brush then screen cleaner, 4x4 gauze to wipe down the screen allow to air dry. record date it was cleaned

what do you use to clean the cassettes?


the amount of black, metallic silver on the film after development it is also the measurement of the quantity of radiation absorbed by the film

quantity of radiation the film absorbs or the density on the film

the MA controls what>

to prove the use of the collimator

what are borders used for

white light

used when maintence is being done on the processor

red amber/safe light

light used when film is being removed and placed in the cassette

film bin

is a leaded light tight cabinet which is divided in compartments for different sizes of film this bin must closed after every use to avoid accidental exposure


converts the latent image into the manifest image(alkaline) 5 mins at 68 degrees

60-75 degrees F and 50-60% humidity

what is the ideal temperature for film storage?

stop bath

mixture of clean water and acetic acid. this stops developer. takes 30 secs


composed of fixing agent, acidifier, hardener,perserve, and h2o MAKES THE IMAGE PERMANET TAKES 10 MINS


used to remove chemicals 20 mins at 68 degrees

drying rack

film is placed on a special hanger. approximately 60 minitues

name, DOB, DOE, name of instution, ss#

what 5 pieces of info do you need on the radiographic ID

90 sec vs. 90 mins= less time more accurate, film is more unifrom and smoother work flow

what are the benifits of automatic processing


how many minutes does it take for developer


how many minutes does it take for fixer

30 seconds

how long does the stop bath take

20 mins

how long does the water wash take

60 mins

how long does the dryer rack take

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