Consideration and Review back Scattered Imaging System to detect hard and soft materials

Background: Backscatter X-ray is an advanced X-ray imaging technology. Traditional X-ray machines detect hard and soft materials by the variation in x-ray intensity transmitted through the target. In contrast, backscatter X-ray detects the radiation that reflects from the target. It has potential applications where less-destructive examination is required, and can operate even if only one side of the target is available for examination. Methods: The scattered X-ray image is formed by scanning a pencil of the X-ray shape along an object dimension under inspection. In every position of pencil scan, x-ray scattering of Component is collected by large detectors located at the X-ray source. By tracking the instantaneous position of the beam on the object and measuring the total intensity of the X-rays scattered by the detectors, one can relate the intensity of the dispersion to the position of each beam on the object being inspected. All two-dimensional images can be constructed along the path of the beam s scanning path by moving the object or transmitting the device, including the X-ray source and the detector. Therefore, objects under the line-to-line check are scanned. Typically, the beam scanning speed is 10 milliseconds per line, much faster than the vehicle s transmission speed (one kilometre per hour equivalent to 30 cps, so for example, in 30 milliseconds, the transmission speed is only 9 millimetres). As a result, image distortion is not visible due to the horizontal component of the motion.Results: The requirement of scanning rays for a scattered Compton image is a pencil-shaped beam that scans the target object into pixels quickly and quickly. Each pixel has a very short time to deploy over a certain area of the object. In addition, back-scatter detectors are very efficient. Also, all of the target-object-focused rays are contributing in post-scattered signals and the cone angle covered by detectors, and the intensity of light needed to produce scattered, practical and obvious photos is incredibly small. The signal produced by this scattered X-ray detector in then used to modulate an image display device to produce an image of the subject and any concealed objects carried by the subject.Conclusion: Imaging techniques based on Compton s back-scan imaging enables the ability to inspect containers, a wide range of vehicles, luggage, and humans. Contrary to the common imaging, in the scattered imaging source and detector device is located on one side of the body. This feature allows the user to use a post-disassembled imaging system in the event that it is difficult or impossible for the other side of the body to locate the detector and use the transcriptional imaging system.

کلیدواژه ها:

backscatter imaging ، Compton scattering ، detector ، image processing