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This work aims to quantitatively assess the image quality obtainable with a custom-built “do-it-yourself” CT system, whose construction and characteristics were presented in [1]. This system was built with the goal of being affordable and cheap to maintain, starting with an investment of under 1000€, and staying under 2000€ after subsequent upgrades that were performed after the initial build. It’s, however, important to note that the scope of this work is not to build a “production ready” system, but to explore the possibilities and the obtainable results when working with low-cost components. Being made with low-cost parts, its specifications are under what is considered the “standard” for industrial and lab CT systems: the system features a 160kV sealed x-ray source with 0.8mm focal spot size, and a lens-coupled detector which uses a sub-zero cooled image sensor coupled to a phosphor screen through a medium format lens. The image quality limitations coming from these low-cost parts, are mainly detectable in the limited image sharpness and contrast, caused by the combination of the large focal spot, the used magnification, and the phosphor-lens assembly. With the aim to quantify system’s basic spatial resolution, the iSRbdetector and the iSRbimage were measured via ASTM E2597 Duplex Wire, and then the system’s MTF was measured via ASTM E1695 rod phantom. Then, to improve image sharpness, the deconvolution of the system’s Point Spread Function was performed, by reconstructing the PSF generated by the combined effect of the focal spot and the detector assembly. The deconvoluted radiographs were then reconstructed again, and the obtained volume was compared with the original one: despite slightly suffering from introduced ringing artifacts and accentuated noise, an image sharpness increase was measured. Radiograph deconvolution was also applied to the scan of the ASTM 1695 rod phantom [2], resulting in an increase in the MTF 10% value from 3.81 lp/mm to 5.1 lp/mm (with 1x1binned detector).