Dose reduction for CT coronary calcium scoring with a calcium-aware image reconstruction technique: a phantom study.

ABSTRACT:

Objective

To assess the dose reduction potential of a calcium-aware reconstruction technique, which aims at tube voltage-independent computed tomography (CT) numbers for calcium.

Methods and materials

A cardiothoracic phantom, mimicking three different patient sizes, was scanned with two calcium inserts (named D100 and CCI), containing calcifications varying in size and density. Tube voltage was varied both manually (range 70-150 and Sn100 kVp) and automatically. Tube current was automatically adapted to maintain reference image quality defined at 120 kVp. Data was reconstructed with the standard reconstruction technique (kernel Qr36) and the calcium-aware reconstruction technique (kernel Sa36). We assessed the radiation dose reduction potential (volumetric CT dose index val

SUBMITTER: Booij R 

PROVIDER: S-EPMC7248036 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature