Contact-free physiological monitoring using a markerless optical system.

ABSTRACT:

Purpose

Physiological noise remains a major problem in MRI, particularly at higher imaging resolutions and field strengths. The aim of this work was to investigate the feasibility of using an MR-compatible in-bore camera system to perform contactless monitoring of cardiac and respiratory information during MRI of human subjects.

Methods

An MR-compatible camera was mounted on an eight-channel head coil. Video data of the skin was processed offline to derive cardiac and respiratory signals from the pixel signal intensity and from head motion in the patient head-feet direction. These signals were then compared with data acquired simultaneously from the pulse oximeter and the respiratory belt.

Results

The cardiac signal computed using the average image pixel intensity clo

SUBMITTER: Maclaren J 

PROVIDER: S-EPMC4515196 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature