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25 Cards in this Set
- Front
- Back
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A film's response to radiation exposure may be plotted by use of a graph known as the:
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H & D curve, sensitometric curve, characteristic curve
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When sensitometric testing is performed on an automatic processor, the acceptable range of variation for speed and contrast is:
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±0.10
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Jamming of films in the processor may be caused by:
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Rollers out of alignment
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Which of the following statements best describes the replenishment system of an automatic processor?
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Adds fresh developer and fixer each time a film is fed into the processor
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Which of the following statements best describes the dryer system of an automatic processor?
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Helps seal emulsion with heat, dries film, works at approximately 120º F
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Which of the following best describes ideal storage conditions for x-ray film?
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Protected from radiation, fumes, outdating
68º to 70º F, 40% to 60% humidity |
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The function of the wash tank is to:
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Remove chemistry from film
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The function of automatic processing is to:
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Make the latent image visible
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Which of the following statements best describes the transport system of an automatic processor?
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Moves film through processor with a series of rollers and racks and agitates chemistry
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The emulsion of radiographic film consists of:
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Sensitivity specks attached to silver halide crystals
Gelatin in which silver halide crystals are suspended |
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Emulsion scratches that run the length of the film in the direction of film travel are usually caused by:
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Guide shoes out of adjustment
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Contamination of developer by fixer will cause:
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Increased fog on the radiograph
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The purpose of adding blue dye to the base of radiographic film is to:
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Reduce glare and enhance contrast for viewing the image
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Which of the following statements best describes the recirculation system of an automatic processor?
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Agitates developer solution, maintains temperature, removes by-products of chemical reactions
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Sensitivity specks on silver halide crystals serve as:
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Development centers for building the manifest image
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WHICH PORTION OF THE CHARACTERISTIC CURVE WOULD MOST LIKELY REPRESENT A DENSITY OF 1.0?
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Straight-line portion
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WHAT IS THE MOST LIKELY RESULT IF INSUFFICIENT WASHING OCCURS DURING PROCESSING?
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Decreased Archival Attributes
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WHICHCHEMICALS FOUND IN THE DEVELOPER SOLUTIONCONTROLS SWELLING AND SOFTENS THE FILM EMULSION?
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Glutaraldehyde
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A WIRE MESH TEST IS USED TO EVALUATE WHAT?
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Screen-film Contact
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ALL OF THE FOLLOWING ARE UNDESIRABLE CHARACTERISTICS PERTAINING TO INTENSIFYING SCREENS EXCEPT:
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Luminescence
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Luminescence
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Spectral Matching
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A DENSITOMETER READING ON THE UNEXPOSED PORTION OF A COLLIMATED, PROCESSED RADIOGRAPH OF THE KNEE SHOULD PRODUCE A READING OF NO MORE THAN:
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0.2
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THE Dmax PORTION OF A CHARACTERISTIC H & D CURVE CAN BE FOUND WHERE?
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Shoulder
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WHAT IS THE CORRECT SEQUENCE OF FILM TRANSPORT THROUGH A TYPICAL 90 SECOND AUTOMATIC PROCESSOR?
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Develop, Fix, Wash, Dry
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WHICH OF THE FOLOWING WAVEFORMS HAS THE LEAST VOLTAGE RIPPLE?
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Three phase, 12 pulse
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