![]() The film has characteristics that allow us to image structures as varied as air-filled to metallic objects on the same radiograph. The resultant opacity of the image is a function of both the object density and the thickness of the structure (which is why some end-on blood vessels can appear as opaque as a rib). The whiteness of the film is termed “opacity”. The latent image is converted into the blacks and whites by the developing process. The light interacts with silver in the film to produce a latent image. The interaction of x-ray photons with the intensifying screen in the cassette produces photons of visible light. Radiographs are images on photographic film by x-rays that have passed through tissue. without a good knowledge of clinical medicine, the changes are noted on the radiographs but incorrect conclusions are reached.without a systematic approach to film interpretation, the information may be on the radiograph, but goes unseen.if poor quality, radiographs are a waste of personnel time and client money.radiographs may lead you to ask more or different types of clinical questions.answers are derived from proper interpretation of the radiographic signs in concert with other clinical aspects of the case.Radiographs provide information NOT answers. ![]() These techniques should provide the basis for production of diagnostic images and ability to derive a reasonable set of differential diagnoses. ![]() ![]() Thoracic radiology remains the main imaging modality in the interpretation of pulmonary and other intra-thoracic diseases. The goals of this lecture are to provide you with techniques of radiography and radiology of the dog and cat thorax. ![]()
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