Improving image quality in fast, time-resolved micro-CT by weighted back projection.

ABSTRACT: Time-resolved micro-CT is an increasingly powerful technique for studying dynamic processes in materials and structures. However, it is still difficult to study very fast processes with this technique, since fast scanning is typically associated with high image noise levels. We present weighted back projection, a technique applicable in iterative reconstruction methods using two types of prior knowledge: (1) a virtual starting volume resembling the sample, for example obtained from a scan before the dynamic process was initiated, and (2) knowledge on which regions in the sample are more likely to undergo the dynamic process. Therefore, processes on which this technique is applicable are preferably occurring within a static grid. Weighted back projection has the ability to handle small erro

SUBMITTER: Heyndrickx M 

PROVIDER: S-EPMC7581769 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature