{"product_id":"investigation-into-theoretically-exact-von-rajesh-venkataraman","title":"INVESTIGATION INTO THEORETICALLY EXACT","description":"\u003cp\u003eReconstruction algorithms for clinical X-ray CT scanners have evolved over the year with emphasis on improving the noise properties of the reconstructed image  especially for whole body imaging. With increasing regulations on X-ray radiation  dose, approximate reconstruction algorithms are preferred over exact reconstruction  algorithms for clinical applications due to their superior noise properties. In this  thesis, we look into improving the image quality, measured in terms of noise, of exact  reconstruction algorithms. Of all the exact reconstruction algorithms available in  litterature, we choose the exact reconstruction algorithm developed be Katsevich  because of its superior computation efficiency. The noise properties of the Katsevich algorithm is improved by modifying the algorithm to reconstruct the estimate of  the attenuation density function over a small region in space. This small region  is called a slice and we introduce five methods that allow Katsevich algorithm  to reconstruct slices. The first method is called the sub-sampling filtering method  and this method reconstructs an estimate of a slice by averaging estimates of sub- samples within the slice region.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838334639\"\u003e\u003ch3\u003eRECONSTRUCTION ALGORITHMS TOWARDS IMPROVED IMAGE QUALITY\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838334639","offer_id":39498908008541,"sku":"9783838334639","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/10344919-b4a4-46ef-a1ba-a2686028064b.jpg?v=1758778915","url":"https:\/\/shop.autorenwelt.de\/products\/investigation-into-theoretically-exact-von-rajesh-venkataraman","provider":"Autorenwelt Shop","version":"1.0","type":"link"}