What is fluoroscopy? It is an imaging technique that uses X-rays. As such, it allows you to investigate internal organs and tissues of the body that cannot be viewed from the outside.
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The differences between fluoroscopy and the common radiography that, still, uses x-rays is that the first provides images that can be observed in real time, while the second, using the radiographic plate as a recording medium, requires for observation the time necessary for its development.
In addition, fluoroscopy, since it is able to acquire a good number of images in a unit of time, allows you to obtain a true film of organs or tissues in motion, such as the heart, lungs and diaphragm.
To obtain these results, fluoroscopy uses an x-ray source and a fluorescent screen.
X-rays have the property of being absorbed in a way that can be more or less consistent, depending on the thickness of the obstacles they pass through.
Thus, the interposition of the body will provide images on the screen of the organs that the x-rays will intercept on their way.
Variously colorful images, from black to white, depending on the consistency of the organ they depict;
In our case, in search of the 7 mm diameter oval hole, the surrounding bones will absorb the radiation and appear more or less dark, while the foramen, which will be letting the radiation pass, will have a very clear outline.
Finally, the image intensifier transforms a large image into a smaller output image, but with a higher light intensity.