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radiographic film

QuestionAnswer
what are the image forming x-rays those that exit the pt. and interact with the IR.exit beam and remnant beam
what are the 2 basic parts of the radiographic film the base and the emulsion
what is the emulsion the heart of the x-ray
what does the emulsion contain gelatin and silver halide crystals
what is the function of the gelation holds and supports the crystals in place.
what is the function of the silver halde crystals it is the active ingredient of the emulsion
how much of the mixture is silver halide 98% is silver halide and 2% is silver iodide.
what is a double emulsion film x-ray film has emulsion coated on both sides
what is a double emulsion film called duplitized film
on the film: where is the adhesive layer located at between the emulsion and the base
what is the function of the thin adhesive layer this allows the base and emulsion to keep proper contact.
what is the emulsion protected by a layer of overcoat(supercoat)
what is the function of the overcoat(supercoat) this protects the emulsion from scratches, pressure and contamination.
what is the function of the base provides a rigid structure onto which the emulsion can be coated.
why does the manufacturer add a blue tint to the base to reduce strain on the radiologist eyes
what is the choice of the film base polyester
what are the sensitivity specks centers for making the latent image visible.
what is the sensitivity specks made of made of impurity (silver sulfite)
what are the 7 layers of the film two each:overcoat,emulsion,adhesive layer,base
what is the latent image the invisible image on the film-before it is process
what is the manifest image after processing the latent image.
what are the two types of film screen film film and direct-exposure film.
what is the most commonly used film used screen film
what is orthochromatic sensitive to blue and green light
what is panchromatic sensitive to all light
what is orthochromatic sensitive to blue and green lightsensitive to blue and green light
what is panchromatic sensitive to all light
what is the D log E curve shows the relationship b/w the amount of exposure and the resulting density on the film
what is another name for D log E curve characteristic curves,sensitrometric curves and Hunter & Driffield(H&D)curves
what are the important elements of a H&D curve line portion,shoulder and maximum density
what are the primary characteristics of film resolution,speed,contrast and latitude
what size bulb and how should the bulb be put in the darkroom A 15 watt bulb,should be no closer than 5FT from the work surface.
at what temperature should film be stored at 20C(68F) or lower
humidity should be maintain at what 30 and 60%
how should film be stored on the end and not flat
what are the processing steps wetting,developing,stop bath,fixing,washing,drying,
what is wetting swells emulsion-developing stage
what is developing produces a visibe image-phenidone affects gray area-hydroquinone affects black black areas
what is stop bath terminates development and removes excess chemicals-now in the fixing stage
what is fixing removes leftover silver halide from emulsion and hardens gelatin
what is washing removes excess chemicals
what does drying do removes water
how long does processing takes drop to dry time is 90 seconds
what is radiation fog intentional exposure to radiation
what is chemical fog chemcial contamination of the developer
what is silver sulfide stain most common cause of poor archival quality.
what are the 3 types of rollers transport rollers move the film on its path-master roller used to turn film in the processor-planetary roller positioned around the master roller.
the transport system contains three parts rollers, transport racks and drive motor
what does the microswitch do when film is placed in feed tray engaged to control replenishment rate of chemicals.
Created by: ambey
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