Performance evaluation of a 4D similarity filter for dynamic CT angiography imaging of the liver.

ABSTRACT:

Background

Dynamic computed tomography (CT) angiography of the abdomen provides perfusion information and characteristics of the tissues present in the abdomen. This information could potentially help characterize liver metastases. However, radiation dose has to be relatively low for the patient, causing the images to have very high noise content. Denoising methods are needed to increase image quality.

Purpose

The purpose of this study was to investigate the performance, limitations, and behavior of a new 4D filtering method, called the 4D Similarity Filter (4DSF), to reduce image noise in temporal CT data.

Methods

The 4DSF averages voxels with similar time-intensity curves (TICs). Each phase is filtered individually using the information of all phases except for the

SUBMITTER: Tunissen SAM 

PROVIDER: S-EPMC11656287 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature