X-ray computed tomography (CT) is a non-destructive technique that offers a 3D insight into
the microstructure of thick (opaque) samples with virtually no preliminary sample …

Iterative reconstruction (IR) methods have recently re-emerged in transmission x-ray
computed tomography (CT). They were successfully used in the early years of CT, but given …

Recent developments in radiotherapy therapy demand high computation powers to solve
challenging problems in a timely fashion in a clinical environment. The graphics processing …

Purpose: Low‐dose CT has attracted increasing attention due to growing concerns about
radiation exposure in medical scans. However, the frugal use of x‐ray radiation inevitably …

Purpose: Acquiring data for CT at low radiation doses has become a pressing goal.
Unfortunately, the reduced data quality adversely affects the quality of the reconstructions …

Neighborhood denoising filters are powerful techniques in image processing and can
effectively enhance the image quality in CT reconstructions. In this study, by taking the …

The majority of imaging systems are software based; they require some kind of
microprocessor or microcontroller for the imaging algorithms to run. As the speed …

Low-dose CT is becoming more popular in recent years due to growing concerns on
radiation exposure in medical scans. Regularized iterative CT reconstruction is a promising …

Conventional ordered-subsets (OS) methods for regularized image reconstruction involve
computing the gradient of the regularizer for every subset update. When dealing with large …

In clinical practice, the widespread use of dental CBCT scanners has been limited because
of cost, availability and radiation dose considerations. The recently proposed nonlocal …