An improved method for the estimation and visualization of velocity fields from gastric high-resolution electrical mapping.

ABSTRACT: High-resolution (HR) electrical mapping is an important clinical research tool for understanding normal and abnormal gastric electrophysiology. Analyzing velocities of gastric electrical activity in a reliable and accurate manner can provide additional valuable information for quantitatively and qualitatively comparing features across and within subjects, particularly during gastric dysrhythmias. In this study, we compared three methods of estimating velocities from HR recordings to determine which method was the most reliable for use with gastric HR electrical mapping. The three methods were 1) simple finite difference (FD) 2) smoothed finite difference (FDSM), and 3) a polynomial-based method. With synthetic data, the accuracy of the simple FD method resulted in velocity errors almost tw

SUBMITTER: Paskaranandavadivel N 

PROVIDER: S-EPMC4106919 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature