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Related Concept Videos

Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Imaging Studies for Cardiovascular System I:Echocardiography01:17

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...
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
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Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...

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Updated: Jun 21, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

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

Published on: April 11, 2025

Imaging cardiac resynchronization therapy.

Theodore Abraham1, David Kass, Giovanni Tonti

  • 1Johns Hopkins Medical Institutions, Baltimore, MD, USA.

JACC. Cardiovascular Imaging
|July 8, 2009
PubMed
Summary
This summary is machine-generated.

Predicting the success of cardiac resynchronization therapy remains challenging. New methods assessing myocardial deformation, scar, and anatomy show promise for better patient outcomes.

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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

Related Experiment Videos

Last Updated: Jun 21, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

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

Published on: April 11, 2025

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

Area of Science:

  • Cardiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Cardiac resynchronization therapy (CRT) offers prognostic benefits, but predicting symptomatic or functional improvement is difficult.
  • Current mechanical markers for assessing left ventricular synchrony have limitations, as indicated by recent multicenter trials.
  • Despite challenges, research continues to identify reliable predictors of CRT response.

Purpose of the Study:

  • To explore novel methods for predicting patient response to cardiac resynchronization therapy.
  • To identify new markers of mechanical synchrony beyond current limitations.
  • To investigate the role of myocardial deformation, scar burden, and specific anatomical imaging in predicting CRT outcomes.

Main Methods:

  • Utilizing advanced echocardiographic techniques to assess myocardial deformation.
  • Employing magnetic resonance imaging (MRI) for detailed myocardial deformation analysis.
  • Investigating the assessment of myocardial scar location and extent.
  • Imaging coronary venous anatomy and phrenic nerve pathways.

Main Results:

  • Echocardiographic and MRI-based myocardial deformation assessments are emerging as potential new contributors to synchrony evaluation.
  • Myocardial scar assessment, including its location and extent, shows promise as a nonsynchrony marker.
  • Imaging of coronary venous anatomy and phrenic nerve anatomy presents as a potentially valuable approach for nonsynchrony assessment.

Conclusions:

  • Current mechanical synchrony markers have limitations in predicting CRT benefits.
  • Novel imaging techniques focusing on myocardial deformation, scar burden, and vascular/nerve anatomy offer promising avenues for improved prediction of CRT outcomes.
  • Further research into these advanced markers is warranted to optimize patient selection for CRT.