Film Test
1) List the layers of the film from top to bottom.
2) T or F: Modern bases of film are made with cellulose nitrate
3) The film base usually includes ______ _____ to reduce eye strain for the interpreting radiogologist.
4) ______ _______ Is the light from one screen crossing over to the other blurring the image.
5) The emulsion layer has two components what are they?
6) T or F: Duplitized film is another name for double emulsion film.
7) The hidden, dormant image before processing is called ______ the image after processing is called ______.
8) In film, crystal size has a _____ relationship with resolution.
9) Films are classified as ______ or ______ according to their sensitivity to the spectral luminance.
10) How many trapped silver atoms must be deposited for a visible clump of black silver to be formed when processed?
11) What is the charge of a freed silver ion?
12) T or F: Non-screen film has a better resolution than screen film.
13) T or F: Direct exposure (non-screen) film is duplitized film.
14) Duplicating film is different from other film how?
15) T or F: the humidity for storing film must be between 60-90% and the temperature must be below 86 degrees F.
Answers
1) Super coat, emulsion, adhesive, base, adhesive, emulsion, super coat
2) False – Polyester
3) Blue dye
4) Crossover effect
5) Gelatin and silver halide crystals
6) True
7) Latent, Manifest
8) Indirect, as size goes up resolution goes down
9) Panchromatic, orthochromatic
10) Three
11) Positive
12) True, but radiation exposure is extremely high so they are very rarely used anymore
13) False, they are designed to use mainly x-ray photons not light photons so double emulsion film would not work.
14) It is pre-exposed and chemically fogged to D-Max by the manufacturer. Any further exposure will cause the film to actually lose density.
15) First part false (should be 30-60%), second part True
