0
do you know about Penumbra calculation as its calculated from this?
Ug=FxT/D
Ug=Geometric Unsharpness
F= Source or Window Size
T= Object Thickness
D= Distance from source to the front surface of the Test Object.
Your Diagnostic film length is calculated from this.
Depending on what standards you work to they will tell you how many shots to do on what thickness of material as well as distance shot from. there is a chart that can be referenced but i can't remember what its called. i will try & find out but i hope this helps
What else can I help you with?
What is the duration of Omar Khayyam film?
The duration of Omar Khayyam - film - is 1.68 hours.
What is Mohanlal's 100th film?
Pappan Priyappetta Pappan
What is the density of 20 micron metalized bopp film?
2.2
Which geometric shape has the highest surface area to volume ratio?
Answer: There doesn't appear to be a single best answer to this type of question. But if we're proposing simple shapes as answers, then a proportionally very thin film (like a sheet of paper) seems serve adequately. From what I have seen and gather, shapes with long length and width and a short depth would have a bigger surface area compared to its volume. in addition, shapes like cubes and spheres will have a greater volume for their surface area.
How many minutes in 400 feet of 16mm film?
At 24 frames per second, it is 11 minutes, 3 seconds and 16 frames
What happens if a radiographic image is placed in the fixer before the developer?
If a radiographic image is placed in the fixer before the developer, it will result in a completely blank image. The fixer is designed to remove unexposed silver halide crystals from the film, so without the development step, there will be no latent image to reveal. Essentially, the film will be washed and rendered unusable for diagnostic purposes. Proper processing order is crucial for obtaining a usable radiographic image.
What is the device that holds radiographic film?
cassette
What are the sizes of the radiographic film?
10x12cm 24x30cm 30x40cm 34x43cm
Which radiographic projection has the patient positioned with the back parallel to the film?
anteroposterior
What kind of radiographic film is used for apical pathology?
Periapical Radiographs
What type of radiographic projection has the patient positioned facing the film and parallel to it?
A PA film has the patient facing and parallel to the film.
What layer of a typical radiographic film has sensitizing dyes that tailor the response characteristics of a given film?
phosphor
What is the density of an unexposed processed radiographic film?
between 0.12 and 0.20. As the film gets older the density will get higher. There is a standard out there that limits the usable film "base fog" density to 0.30.
What is meant by the term - 'reticulation of radiographic film'?
Reticulation of radiographic film refers to a pattern of fine lines or a mottled appearance that can occur on the film due to improper processing. This phenomenon is often caused by extreme temperature changes during the developing process, particularly when the film is rapidly cooled or heated. It can compromise the quality of the radiographic image, making it difficult to interpret. Proper temperature control and processing techniques are essential to avoid reticulation.
Which radiographic projection has the patient positioned so the body is slanted sideways to the film?
oblique
Comperism between geometric unsharpnes and radiographic unsharpness?
geometric unsharpness is fixed by setting the focal radius,etc. while radiographic unsharpness consists of both geometric and film unsharpness.
What is the relationship between film screen speed and radiographic density?
As film screen speed increases, radiographic density decreases. Faster film screens require less exposure to produce the same density as slower film screens. This relationship is important in balancing exposure settings to achieve optimal image quality.
