What are radiographic techniques?
Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object. To create an image in conventional radiography, a beam of X-rays is produced by an X-ray generator and is projected toward the object.
What are the two methods of film processing?
Film processing, whether it is manual or automatic, comprises five basic steps: (1) developing, (2) rinsing or stop bath, (3) fixing, (4) washing, and (5) drying. The first step in learning how to process a film is a basic understanding of the processing solutions.
What is the difference between a radiograph and a film?
In photography, reflected light rays from the object expose the film to produce an image. In radiography, X-rays that pass through the object expose the film to produce an image.
What are the two different types of film in radiography?
The two primary types of radiographic film are direct exposure film and screen film. Direct exposure film provides a sharp image of thin body parts having high subject contrast.
What is radiographic film?
Thin, transparent sheet of cellulose acetate coated with radiation-sensitive emulsions of silver bromide, silver halide, and silver iodide crystals that are suspended in a gelatinous component; sealed in a moisture-resistant, light-proof protective packet when used for intraoral dental radiographs.
What is the purpose of a radiographic film?
X-ray film displays the radiographic image and consists of emulsion (single or double) of silver halide (silver bromide (AgBr) is most common) which when exposed to light, produces a silver ion (Ag+) and an electron. The electrons get attached to the sensitivity specks and attract the silver ion.
What is radiographic film processing?
Radiographic Film processing refers to a series of steps to convert the latent image (invisible) on the film into a visible image. To produce a satisfactory radiograph, the care used in making the exposure must be followed by equal care in processing.
What’s the definition of radiograph?
(Entry 1 of 2) : a picture produced on a sensitive surface by a form of radiation other than visible light specifically : an X-ray or gamma ray photograph.
What is a film radiography?
Screen film radiography is the use of silicon films within a cassette being placed behind the object to be imaged and exposed to an x-ray beam. These films are then processed.
What is a radiographic film?
X-ray films for general radiography consist of an emulsion-gelatin containing radiation sensitive silver halide crystals, such as silver bromide or silver chloride, and a flexible, transparent, blue-tinted base.
What are the types of radiographic film?
Layers
- base: cellulose triacetate or polyester.
- substratum: an adhesive layer containing gelatin and solvents that bind emulsion and base.
- emulsion: silver halide and gelatin, with some hardening agents.
- protective layer: gelatin.
What is the purpose of radiographic film?