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Radiology 3 Test 3
Stachenotes PCC Canturbury
53
Anatomy
Graduate
06/11/2012

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Cards

Term
The sheet of lead in a cassette serves what purpose?
a. To filter the beam
b. To protect the patient
c. To act as a reflective layer
d. To help prevent back scatter
Definition
d. To help prevent back scatter
Term
Using an extremity cassette will have which effect?
a. it will decrease patient exposure
b. it will increase patient exposure
c. it will decrease exposure time
d. it will increase mottle
Definition
b. it will increase patient exposure
Term
If your cassette was incompletely closed what would the film probably look like?
a. it would have branching black lines
b. it would have a white strip at the edge
c. it would have branching white lines
d. it would have a black strip at the edge
Definition
d. it would have a black strip at the edge
Term
What exists on a film after you have exposed the patient but before processing it?
a. a light image
b. a latent image
c. a dark image
d. a well exposed image
Definition
b. a latent image
Term
Too high of a kV will have which effect on the film?
a. quantum mottle
b. high contrast
c. blurry images
d. increased penumbra
Definition
a. quantum mottle
Term
Which combination of screen light and film color is preferred?
a. blue light and green film
b. green light and blue film
c. purple light and green film
d. green light and purple film
Definition
d. green light and purple film
Term
Which of the following is the reason why many recommend that you NOT use an extremity screen system in an office that performs mainly spine films?
a. the extremity film is too expensive
b. the extremity film will demonstrate more unsharpness
c. the extremity film increases the radiation to the patient
d. the extremity film may get mixed with the spine cassettes and require retakes
Definition
d. the extremity film may get mixed with the spine cassettes and require retakes
Term
Which of the following is a problem when storing x-ray film flat instead of upright?
a. fogging
b. light leak
c. static electricity
d. pressure marks
Definition
d. pressure marks
Term
About how often should you clean intensifying screens?
a. three months
b. one year
c. ten years
d. whenever they get dirty
Definition
a. three months
Term
About how many 14"x17" films should be run through an automatic processor in a week before it is economically feasible?
a. 5-10
b. 15-20
c. 20-25
d. 40-45
Definition
C. 20-25
Term
How would your processed film appear if you decreased the recommended developing time and maintained the recommended temperature?
a. it would have a green tint
b. it would be too light
c. it would be too dark
d. it would have brown stains
Definition
b. it would be too light
Term
What is the usual recommended optimal developing temperature for manual processing?
a. 98 degrees
b. 90 degrees
c. 68 degrees
d. 60 degrees
Definition
c. 68 degrees
Term
Sensitometry is a way to do which of the following?
a. to check collimation accuracy
b. to check consistency of processing
c. to measure the density of a film
d. to measure the radiation dose to sensitive tissue
Definition
b. to check consistency of processing
Term
In which phase of processing does the latent image become the manifest image?
a. developing
b. rinsing
c. fixing
d. drying
Definition
a. developing
Term
densitometry and sensitometry are primarily used for which purpose?
a. to monitor film fogging
b. to monitor patient exposure
c. to monitor processor function
d. to monitor consistency of the mAs
Definition
c. to monitor processor function
Term
A curtain effect from a lack of fluids being removed in automatic processing is caused by a malfunction of which of the following?
a. master rollers
b. guide shoes
c. splash gaurds
d. transport rollers
e. squeegee rollers
Definition
e. squeegee rollers
Term
A high intensity lamp is usually used for which of the following?
a. to allow for greater versatility in the x-ray technique
b. to better see under-exposed areas on a film
c. to better see over-exposed areas on a film
d. to see through a very thin patient
e. to better see the entire film
Definition
c. to better see over-exposed areas on a film
Term
Which of the following is the proper arrangement of the five subject densities seen on the radiograph from the most dense to the least dense?
a. water, oil, heavy metal, air
b. air, oil, water, metal, heavy metal
c. Heavy metal, metal, water, oil, air
d. metal, oil, air, water, heavy metal
Definition
c. Heavy metal, metal, water, oil, air
Term
Why are the renal shadows often seen on an A-P lumbar film?
a. due to contrast between water and air
b. due to contrast between metal and water densities
c. due to contrast between oil and water densities
d. due to contrast between air and oil densities
e. due to the contrast between metal and air densities
Definition
c. due to contrast between oil and water densities
Term
The thickness of lead that is needed for primary and secondary protective barriers for an x-ray facility are which of the following?
a. 1/32 and 1/64 inches respectively
b. 1/16 and 1/32 inches respectively
c. 1/8 and 1/16 inches respectively
d. 1/4 and 1/8 inches respectively
Definition
b. 1/16 and 1/32 inches respectively
Term
In the event that a patient (unruly child) needs to be held during an x-ray procedure, who should be selected for the task?
a. you
b. a passer by
c. your office assistant if not pregnant
d. the 50 year old grandmother if not pregnant
Definition
d. the 50 year old grandmother if not pregnant
Term
Where should the exposure switch be located?
a. on a long cord
b. inside the booth
c. on the bucky
d. just outside the lead window
Definition
b. inside the booth
Term
If you wanted to see the sacroiliac joints and the L5 disc space without distortion on an A-P view, which would be the BEST thing to do?
a. direct the central ray A-P with a cephalic tube tilt
b. diract the central ray P-A with a cepalic tube tilt
c. direct the central ray A-P with no tube tilt
d. direct the central ray P-A with no tube tilt
Definition
a. direct the central ray A-P with a cephalic tube tilt
Term
62 year old female needing thoracic films with A-P diameter 29cm. What would be essential to use when taking films?
a. a grid
b. high frequency unit
c. female gonad shield
d. radiographic table
e. 400 speed screen cassetes
Definition
a. a grid
Term
Old woman has scoliosis, A-P shows 22 degree convexity to the right. How do you proceed?
a. take P-A now
b. take film with right side against the grid
c. take film with left side against the grid
d. the side you put against the grid doesn't matter
e. take a lateral lumbosacral film next
Definition
b. take a film with her right side against the grid
Term
Which of the following would produce a sharper image?
a. non screen film
b. faster intensifying screens
c. longer exposure time
d. shorter FFD
Definition
c. longer exposure time
Term
In order to justify an automatic processor, 20-25 14"x17" films should be run through in what time period?
a. per day
b. per week
c. per month
d. per year
Definition
b. per week
Term
If your temperature is too high in the dryer part of your automatic processor, which of the following would be the most likely?
a. the films would probably be too dark
b. the films will probably be discolored
c. the films will probably have a shrunken base
d. the films will probably have water spots
Definition
d. the films will probably have water spots
Term
With manual processing after a film is first put into a solution what is the next recommended thing to do?
a. agitate it
b. keep it motionless
c. reload the cassette
d. turn on the light
Definition
a. agitate it
Term
If you have two films of a patient that demonstrate a kissing artifact, why do you suspect it could be necessary to retake the films?
a. because the films will have too much radiographic density
b. because the area of contact will appear dull
c. because the contact areas will discolor with time
d. because kissing artifacts can be mistaken for pathologies
Definition
b. because the area of contact will appear dull
Term
If your developer smells like ammonia, what does it usually mean?
a. it is too strong
b. it is oxidized
c. it is too weak
d. it has fixer in it
Definition
b. it is oxidized
Term
Where would you place the wire mesh for a wire mesh test?
a. on the collimator
b. on the cassette
c. in the cassette
d. under the cassette
Definition
b. on the cassette
Term
Which of the following is not one of the criteria for holding a patient?
a. never use a pregnant female to hold a patient
b. the holder should wear protective apron and gloves
c. only employees should hold patient
d. the holder should be over 18 years old
Definition
c. only employees should hold patient
Term
What is the occupational annual dose limit for whole body exposure?
a. .5 rem
b. 5 rem
c. 15 rem
d. 50 rem
Definition
b. 5 rem
Term
Let's say you have just installed an automatic processor in your dark room. It doesn't fit. What part must be in the darkroom?
a. first set of squeegee rollers
b. tempter control system
c. electrical system
d. transport rollers
e. feed tray
Definition
e. feed tray
Term
Which combination of screen light and film color is prefered?
a. blue light and green film
b. green light and blue film
c. purple light and green film
d. green light and purple film
Definition
d. green light and purple film
Term
How will dirt on an intensifying screen appear on the exposed film?
a. white branching streaks
b. black branching streaks
c. white specks
d. black specks
Definition
c. white specks
Term
Which of the following would lead to the least exposure of a patient to ionizing radiation?
a. a grid
b. an extremity cassette
c. a dual screen system
d. an underpart filter
Definition
c. dual screen system
Term
Which of the following effects will too fast of a film screen combination have on the radiograph?
a. it will have very short scale contrast
b. it will require greater patient exposure
c. it will show a lack of penetration
d. it will demonstrate graniness
Definition
d. it will demonstrate graniness
Term
Which speed is preferred in general spinal radiography with a rare earth system?
a. 100
b. 200
c. 400
d. 800
Definition
c. 400
Term
Having a thicker phosphor layer in your screens will have which effect?
a. produce lighter image
b. produce clearer image
c. make screen slower
d. make the screen faster
Definition
d. make the screen faster
Term
What does a wire mesh test test for?
a. light leaks in the cassette
b. speed accuracy of the screens
c. if the film and screens are spectrally matched
d. if there is good contact between screens and film
Definition
d. if there is good contact between screens and film
Term
Why should bad films that you have retaken not be destroyed?
a. they are protected by the statute of limitations law
b. they can be recycled by the film company
c. they contain poisonous material
d. they can be sold fo silver
Definition
d. they can be sold for silver
Term
An arbitrary number for 100 speed screens is referred to as ___.
a. par
b. fast
c. high
d. rare earth
Definition
a. par
Term
The sheet of lead in a cassette serves what purpose?
a. to filter the beam
b. to protect the patient
c. to act as a reflective layer
d. to help prevent back scatter
Definition
d. to help prevent back scatter
Term
Too high of a kV will have which effect on the film?
a. quantum mottle
b. high contrast
c. blurry images
d. increased penumbra
Definition
a. quantum mottle
Term
Which type of film is preffered in a chiropractic office?
a. single emulsion
b. double emulsion
c. direct exposure
d. par speed exposure
Definition
b. double emulsion
Term
Black branching streaks randomly placed on the film is usualy due to what?
a. light leak
b. static electricity
c. bending of the film
d. cracks in the screen
e. too high kV
Definition
b. static electricity
Term
If you were manually processing your films, your developer temperature was 65 degrees and you developed for five minutes and fixed for ten minutes, what would your film look like?
a. clear
b. light
c. dark
d. discolored
Definition
b. light
Term
Which of hte following is the recommended intensifying screen for use in a chiropractic office?
a. calcium tungsten
b. direct exposure
c. single screen
d. rare earth
Definition
d. rare earth
Term
Which speed is preferred in general spinal radiography with a rare earth system?
a. 100
b. 200
c. 400
d. 800
Definition
c. 400
Term
Which of the following problems could occur if your intensifying screen is warped?
a. scratches on the film from roughened edges
b. film pressure marks from increased contact
c. blurry area from bad contact
d. light leak from bent cassette
Definition
c. blurry area from bad contact
Term
What would oxidized developer look like?
a. clear
b. yellow
c. orange
d. brown
Definition
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