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Ct Scanner Ring Research Paper

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The CT scanner ring contains an X-ray tube which is used to produce the X-ray beams when a patient enters the ring. The X-ray tube is in vacuum form meaning no air is inside the tube and no air can enter the tube. Within the cathode electrons are produced meaning an electron current is produced and this ranges from 10 to 500 mA as the free electron acceleration is at high speed. Due to this electron production, there is a high voltage and the voltage accelerates the free electrons which are not within the current towards the anode. The voltage within the tube determines the energy of the x-rays. A CT scanner usually has around 90-140kVp (kilo-voltage potential) meaning the electrons are shot at the anode at extremely high speed as they have a …show more content…
They can also detect brain tumours or growths on the brain. Unlike an x-ray machine, a CT scanner can capture images of soft tissue by taking images from all around the area that is being scanned. As the brain is mainly tissue it is easy to create a structural image of it during the CT scan however; body tissue is harder to capture so a dye containing iodine is sometimes injected into the bloodstream. This dye is absorbed by the body tissue and this improves its visibility and detection by the x-ray beams meaning it is easier to produce a structural image of this tissue on the imaging monitor. Dye also allows radiographers to view arteries and veins however the dye used is a contrast dye rather than an iodine dye. The contrast dye makes the arteries and veins stand out so they can be detected during the scan and displayed on the screen. The difference between a CT scanner and x-ray machine -even though they use the same type of EM wave- is that they detect internal body parts of different densities so; CT scanners are good at detecting soft tissue and blood vessels and x-ray machines are good at displaying bone.

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