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Jul 31, 2023 · The production of X-ray images is a complex process that uses electromagnetic radiation. X-rays are high-frequency energy waves that penetrate through the body or the target organ and are either absorbed, reflected off, or traversed through the body. The X-ray tube, which produces the X-ray, is composed of a cathode and an anode. The cathode is a tungsten filament, which is heated during the ...
- Justyn Nakashima, Hieu Duong
- Edward Via College-Auburn
- 2020
- 2023/07/31
- Overview of The Physics Behind X-Ray Interactions
- Energy Dependence of Interactions
- Summary
When x-rays interact with the human body during an x-ray exposure, they form an image that is highly dependent on the type of interactions of matter and x-rays. Diagnostic x-ray interactions are dominated by two different physical interactions – the photoelectric effect and Compton scatter. Understanding the impact of the photoelectric effect and C...
In different parts of the body and at the different energy levels, photoelectric effect and Compton scattering have different contributions. From the perspective of an image scientist or medical physicist the human body can usually be approximated as a bag of water for the soft tissue and with some bone distributed throughout. The photoelectric and...
The regions in an x-ray image with the most attenuation are typically shown as bright in an x-ray image. These regions attenuate or absorb the x-rays at a higher rate than other regions. The primary interactions dominating diagnostic x-ray imaging are the photoelectric effect and Compton Scattering. In general, maximizing the contribution of photoe...
Aug 3, 2018 · X-ray image intensifiers are vacuum tubes that are used to convert X-rays into visible light, i. e., an image. The schematic principle of this process is shown in Fig. 7.10. First, the incoming X-ray photons are converted to light photons using a phosphorus material called the input phosphor.
- Martin Berger, Qiao Yang, Andreas K. Maier
- 10.1007/978-3-319-96520-8_7
- 2018
- 2018/08/03
Key points. X-rays are produced within the X-ray machine, also known as an X-ray tube. No external radioactive material is involved. Radiographers can change the current and voltage settings on the X-ray machine in order to manipulate the properties of the X-ray beam produced. Different X-ray beam spectra are applied to different body parts.
Oct 10, 2021 · Electrons released from filament. Tube voltage is applied across the x-ray tube. Electrons, therefore, are accelerated towards positively charged anode, which gives them a certain energy. The electrons strike the anode and the energy released via interaction with the anode atoms produces x-ray photons.
Jul 31, 2023 · X-rays are a form of electromagnetic radiation with wavelengths ranging from 0.01 to 10 nanometers. In the setting of diagnostic radiology, X-rays have long enjoyed use in the imaging of body tissues and aid in the diagnosis of disease. Simply understood, the generation of X-rays occurs when electrons are accelerated under a potential difference and turned into electromagnetic radiation.[1] An ...
Feb 27, 2016 · Introduction. To produce a radiographic image, x-ray photons must pass through tissue and interact with an image receptor (a device that receives the radiation leaving the patient) such as a film-screen or digital system. Both the quantity and quality of the primary x-ray beam affect its interaction within the various tissues that make up the ...
