What is Computed Tomography? | 合法醫療器材資訊網

2020年9月28日—Computedtomography(CT)imagingprovidesaformofimagingknownascross-​sectionalimaging.CTimagingproducescross-sectional ...

Figure 1: Chest X ray Image

All x-ray imaging is based on the absorption of x rays as they pass through the different parts of a patients body. Depending on the amount absorbed in a particular tissue such as muscle or lung, a different amount of x rays will pass through and exit the body. The amount of x rays absorbed contributes to the radiation dose[1] to the patient. During conventional x-ray imaging, the exiting x rays interact with a detection device (x-ray film or other image receptor) and provide a 2-dimensional projection image of the tissues within the patients body - an x-ray produced "photograph" called a "radiograph." The chest x ray (Figure 1) is the most common medical imaging examination. During this examination, an image of the heart, lungs, and other anatomy...