Ensuring respiratory phase consistency to improve cardiac function quantification in real-time CMR.

ABSTRACT:

Purpose

To develop an automatic method for selecting heartbeats with consistent respiratory phase to improve accuracy of cardiac function quantification in real-time (RT) cardiac MRI.

Methods

The respiratory signal is extracted by a principal component analysis method from RT cine images. Then, a two-step procedure is used to determine the directionality (sign) of the respiratory signal. With the motion in a manually selected region-of-interest as a reference, the quality of the extracted respiratory signal is assessed using multislice RT cine data from 11 volunteers and 10 patients. In addition, the impact of selecting heartbeats with consistent respiratory phase on the cardiac function quantification is evaluated.

Results

The extracted respiratory signal using the p

SUBMITTER: Chen C 

PROVIDER: S-EPMC8776600 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature