Ring Reduction utilizes a combination of hardware and a proprietary software algorithm to compensate for the irregular response of the detector pixels during a CT scan. This increases quality by reducing artifacts that can mask indications or be misinterpreted as an indication.
Ring Reduction can also improve volume surface quality. Using this feature adds minimal scanning time when compared to a standard scan done without Ring Reduction.

More articles and information about X-ray ring reduction

A New Development for Significantly Reducing Ring Artifacts in CT Scans
During a CT scan, pixels that do not respond to the variations in product related attenuation will cause consistent or intermittent tracks along scan trajectories which end up as rings in a CT reconstruction.

New interview with NSI's Product Manager featured in Aerospace Testing International Magazine
Product Manager, Nick Brinkhoff explains how a new software module enhances CT Scans for NDT.

How will NSI software upgrades and software contracts benefit your business?
Before I get into the benefits and value of how NSI software contracts will benefit your business, let’s look back at the history of NSI’s software. The next big thing will make your company run stronger, safer, faster and overall more profitable.