Nettet20. mai 2024 · In the limited-angle CT scanning mode, conventional analytic methods … NettetHowever, CT scan is associated with the hazards of radiation and high cost. Ultrasonography (US) is cheap and also devoid of any radiation hazard to the patient. But, at the same time, its usage is limited by decreased sensitivity and specificity, inaccuracy in measuring stone size, and observer dependency.

[2103.05255] Improving Generalizability in Limited-Angle CT ...

NettetIn this paper, we consider minimizing the L 1 / L 2 term on the gradient for a limited … NettetIn this paper, we consider minimizing the L 1 / L 2 term on the gradient for a limited-angle scanning problem in computed tomography (CT) reconstruction. We design a specific splitting framework for an unconstrained optimization model so that the alternating direction method of multipliers (ADMM) has guaranteed convergence under certain conditions. tale of 2 brains mark gungor

A limited-angle CT reconstruction method based on anisotropic …

Nettet31. des. 2024 · Limited-angle reconstruction is a very important but challenging … Nettet7. apr. 2013 · This paper presents a compressed sensing (CS)-inspired reconstruction method for limited-angle computed tomography (CT). Currently, CS-inspired CT reconstructions are often performed by minimizing the total variation (TV) of a CT image subject to data consistency. A key to obtaining high image quali … Nettet5. sep. 2024 · Zeroth Moment. The 0th moment, as shown in the figure above is the response of the CT detectors when X-rays first hit them at each angle. This would be the sum of attenuation amplitude (Y axis) at each angle (X axis) and therefore will be the sum of each of the 256 angular projected columns of the sinogram. tale of 2 cats