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Imaging Studies for Cardiovascular System I:Echocardiography

Imaging Studies for Cardiovascular System I:Echocardiography

Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...

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Related Experiment Video

Updated: Jul 17, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

An innovative approach to evaluate a cardiac function based on surface measurement.

M Uematsu¹, Y Shiraishi, K Sekine

¹Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan (phone: +81-3-5286-3256; fax: +81-3-3200-2516;

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference

|February 7, 2007

Summary

This study introduces a novel method to evaluate cardiac function by measuring heart surface displacement. The technique visually represents regional strain changes, aiding in understanding heart contractions and differences in conditions like arrhythmia.

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Last Updated: Jul 17, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

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Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo

Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo

Published on: October 2, 2021

Area of Science:

Cardiology
Biomedical Engineering
Medical Imaging

Background:

Cardiac function is crucial for overall health, often assessed by blood flow and pressure dynamics.
Existing methods for evaluating cardiac function have limitations in capturing regional mechanical behavior.

Purpose of the Study:

To propose and validate a new method for assessing cardiac function using simultaneous measurements of the heart's muscular surface.
To quantitatively analyze regional strain changes on the heart's surface.

Main Methods:

Utilized an optical three-dimensional location sensor to measure displacement at specific anatomical points on the heart surface.
Calculated quantitative changes in strain for each regional surface area.
Correlated optical measurements with echocardiogram data.

Main Results:

The novel method demonstrated results comparable to echocardiography.
Distinct differences in displacement and phase were observed between control subjects and those with arrhythmia.
Regional strain changes were found to be synchronized with natural heart contractions.

Conclusions:

The proposed optical measurement technique offers a viable method for evaluating cardiac function.
Visualizing regional strain data overlaid on heart videos enhances the understanding of cardiac mechanics.
This approach shows potential for differentiating cardiac conditions like arrhythmia based on mechanical behavior.