X-ray Imaging | 合法醫療器材資訊網

Generallyspeaking,X-rayradiographymeasurestheamountofenergyloss.Becausethisenergylossdiffersforthedifferentmaterials,wecanseeacertain ...

In the previous sections, the concepts of X-ray generation and also their interaction behavior with matter has been outlined. In this section, we will now focus on different detection methods used to convert the X-rays that have passed the patient to an actual image. Unlike the old X-ray films, which use X-rays directly to change the chemical properties of the X-ray film material, the modern detection systems first convert the X-rays to light and eventually to electrons.

7.4.1. Image Intensifiers

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 . First, the incoming X-ray photons are converted to light photons using a phosphorus material called the input phosphor. The produced light is further converted to electrons by exploiting the photoelectric effect inside a photocathode. These electrons are then...

Medical X | 合法醫療器材資訊網

2020年9月28日 — There are many types - or modalities - of medical imaging procedures, each of which uses different technologies and techniques. Computed ... Read More

X | 合法醫療器材資訊網

Phase-contrast X-ray imaging refers to a variety of techniques that use phase information of a coherent X-ray beam to image soft tissues. It has become an ... Read More

X | 合法醫療器材資訊網

2021年4月12日 — X-rays are a type of radiation called electromagnetic waves. X-ray imaging creates pictures of the inside of your body. Read More

X-ray | 合法醫療器材資訊網

2020年2月5日 — Overview. An X-ray is a quick, painless test that produces images of the structures inside your body — particularly your bones. Read More

What are medical x | 合法醫療器材資訊網

Medical x-rays are used to generate images of tissues and structures inside the body. If x-rays travelling through the body also pass through an x-ray detector ... Read More

X-ray Imaging | 合法醫療器材資訊網

Generally speaking, X-ray radiography measures the amount of energy loss. Because this energy loss differs for the different materials, we can see a certain ... Read More

Chest X | 合法醫療器材資訊網

An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of ... Read More

Radiation Dose in X | 合法醫療器材資訊網

Patient safety information about radiation dose from X-ray examinations and CT scans (CAT ... For more information on radiation safety in pediatric imaging, ... Read More

X-Ray: Purpose, Procedure | 合法醫療器材資訊網

What is an X-ray? ... An X-ray is a common imaging test that's been used for decades. It can help your doctor view the inside of your body without having to make ... Read More

Radiation in Medicine: X-Rays | 合法醫療器材資訊網

During this type of medical imaging procedure, an x-ray machine is used to take pictures of the inside of the body. The x-rays pass through various parts of ... Read More

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