The essentials of Computed Tomography and its application in cardiac imaging

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The paper delves into computed tomography, particularly its application in cardiac imaging. It explains the role of X-rays in creating three-dimensional images from captured shadows, addressing the mathematical inverse problem initially solved by Johann Radon. Key reconstruction algorithms, including the Fourier Transform and filtered backprojection, are briefly introduced. A significant challenge in cardiac CT is the movement of the heart and chest, which is mitigated by using ECG triggering to enhance image quality during scans.