How X-Rays Play Their Role in Imaging

Imaging using X-rays involve an X-ray tube that penetrates the body to produce a beam of x-rays. When the tube passes through the body, some parts of the X-ray beam energy get absorbed by the body, which is dubbed X-ray beam attenuation. The attenuated x-rays are captured by a film or detectors on the patient’s body’s opposite side. This produces a clinical image as a result. Conventional radiography results in production of a 2D image. In case of Computed tomography (CT), on the other hand, detector and tube both rotate around the body and a number of images are obtainable, which provides for a 3D visualization.
Usually, X-ray radiography, CT, fluoroscopy, angiography and mammography are used as varied imaging methods to conduct an x-ray test.
It is well known that different organs of the body of the patient absorb or react to x-rays in different ways. This is the only reason why some organs or tissues appear white, some gray and some dark. Also, this is the reason why some or the other body parts face more risks from x-ray examinations as compared to some others.
A parameter of the dose that gets absorbed by the patient’s body and keeps differing sensitivities into its account is called an effective dose.