ENGINEER 1C03 Lecture Notes - Lecture 9: Radionuclide, Positron, Decay Product
9 Nov 2017
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Document Summary
The final image results in a very accurate x-ray in a 180 plane. The production of such powerful x-rays results in the generation of both high levels of heat and soft x- rays. The large amounts of heat (because of the high voltages) must be cooled across a large area which is an inefficient and uneconomical process. The heat coupled with the constant moving of the gantry results in the failure of many x-ray tubes and must be replaced which is extremely expensive. Cat scans are a far superior diagnostic tool when softer tissue needs to be scanned which only differs in density by small percentages. Brain scans are particularly important for many patients and can only be conducted using cat scan technology which allows images of the brain to be taken, penetrating through the extremely dense skull. By taking a large amount of slices, the high energy x-rays can penetrate the skull and distinguish between the different brain materials.
