Example: air traffic controller
Search results with tag "Rectangular collimation"
Radiation safety in dental radiography
www.ncradiation.netpreferably with rectangular collimation. This is an example of a rectangular collimator that restricts the beam to the size and shape of the dental film. Round collimators can be converted to a rectangular shaped opening by using an insert avail able through a manufacturer of dental radiographic products (see last page for suggested resource).
Production of X-rays and Interactions of X-rays with Matter
www.columbia.edurectangular collimation of the x-ray beam. Use of collimation also improves image quality. When an x-ray beam is directed as a patient about 90% of the x-ray photons are absorbed by the tissues and 10% of the photons pass through the patient and reach the film. Many of …