A novel beam stopper-based approach for scatter correction in digital planar radiography.

ABSTRACT: X-ray scatter in planar radiography degrades the contrast resolution of the image, thus reducing its diagnostic utility. Antiscatter grids partially block scattered photons at the cost of increasing the dose delivered by two- to four-fold and posing geometrical restrictions that hinder their use for other acquisition settings, such as portable radiography. The few software-based approaches investigated for planar radiography mainly estimate the scatter map from a low-frequency version of the image. We present a novel method for scatter correction in planar imaging based on direct patient measurements. Samples from the shadowed regions of an additional partially obstructed projection acquired with a beam stopper placed between the X-ray source and the patient are used to estimate the scatte

SUBMITTER: Sakaltras N 

PROVIDER: S-EPMC10232419 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature