Ct scan
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Transcript of Ct scan
![Page 1: Ct scan](https://reader035.fdocuments.us/reader035/viewer/2022070317/556e6af6d8b42a6a248b51da/html5/thumbnails/1.jpg)
![Page 2: Ct scan](https://reader035.fdocuments.us/reader035/viewer/2022070317/556e6af6d8b42a6a248b51da/html5/thumbnails/2.jpg)
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Tomography is a technique whereby a 3-dimensional image is obtained or constructed by ‘slicing’ or sectioning the body using a CT scanner through different angles using computer technology and
techniquesData from each individual X-ray image and angle of viewing is fed into a powerful computer enabling a 3-D
image of the entire object to be reconstructed, which can then be viewed from any angle
![Page 4: Ct scan](https://reader035.fdocuments.us/reader035/viewer/2022070317/556e6af6d8b42a6a248b51da/html5/thumbnails/4.jpg)
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Basic principles of CT Scan
Can be illustrated using a simple cube with the aim of producing an image of a slice or section through the body from measurements made about its axis
The section or cube is divided into a series of smaller units called voxels which absorbs the X-ray beam to different extents due to its structure
The intensity transmitted through each voxel alone is given a number referred to as a pixel, and these various pixels are built up from measurements of the X-
ray intensity along different directions through the slice or sectionOperated by using a moving X-ray emitter and detector and a powerful
computer to store data, reconstruction of these pixels in their correct positions is done to display the 3D image of the internal organ being scanned
![Page 6: Ct scan](https://reader035.fdocuments.us/reader035/viewer/2022070317/556e6af6d8b42a6a248b51da/html5/thumbnails/6.jpg)