Cassettes-With-Film

Cassettes-With-Film RADAC Cassettes-With-Film consist of x-ray films of any desired shape enclosed in disposable plastic cassettes, ready for exposure.

The concept dispels the notion that x-ray films can be provided only in standard rectangular sizes that may be quite unsuitable for specialized applications.

RADAC cassettes are made to fine dimensional tolerances and can be packed with any available type of x-ray film.

Packs may contain just one film or can be multiple-loaded and may include lead foil for special applications.

Films are normally sealed under pressure but certain shapes can be vacuum-packed to exclude all air.

Cassettes-With-Film are in use in the following fields:

The use of Ytterbium and the advent of micro-focus x-ray sets has brought increased quality and sensitivity to the technique and widened the range of possible applications still further.

The technique permits critical radiographic examination of things that would be impossible with conventional rectangular-shaped films of standard size.

No time is wasted in the darkroom with scissors and a template. Films are cut precisely to fit the geometry of the job in hand. They are cut with tools that ensure that each film is exactly the same size and shape.

Since the films are tailor-made. the optimum source-film distance can be used giving the best possible definition and sensitivity.

Costly re-takes due to mis-placement of the films are minimized. Films are welded tightly inside PVC envelopes, ensuring the edge of the film is always as close as possible to the outer edge of the cassette. There are no variations and once the technique is established 100% repeatability can be achieved.

They may have lead-foil screens (front, back and/or centre foils) for intensification or scatter-absorbing purposes.

Rectangular films, and certain other shapes, may be vacuum-packed to exclude all air and give perfect film/foil contact.

Cassettes are made from black PVC 300 microns thick, specially formulated to ensure light-tightness under all conditions.

Each one has a colour-coded patch to indicate the type of film enclosed and its expiry date.

Further information is contained in the RADAC booklet 'Cassettes-With-Film' available free of charge.

Shaped Films

There are occasions where special shapes are required but because of the size of the films and because fine edge tolerances are not required, Cassettes-With-Film are not ideal. In these cases it is possible to produce specially shaped re-loadable plastic cassettes and a supply of cut films and intensifying screens.

Provided that the shape required is one which can be loaded into a cassette by the normal means in the customer's darkroom, this often provides an efficient compromise solution to the problem.

The customer benefits from the standardization and repeatability of Cassettes- With-Film without the added cost of disposable cassettes and lead foils.

Re-usable lead intensifying screens with photo-quality card backing are normally supplied cut to shape for use with these cassettes.