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Image quality improvement in computed tomography using anisotropic diffusion

This paper presents the effect of noise reduction filter on computed tomography (CT) images. In CT examinations, a high radiation dose results in high-quality images, but unfortunately, as the radiation increases, the associated risk of cancer also increases. Especially in paediatric applications it is essential to maintain low radiation dose. Anisotropic diffusion is Selective and nonlinear filtering technique which filters an image within the object boundaries & not across the edge orientation. This technique is used to improve an image quality and allow the use of a low-dose CT protocol.