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Nuclear Image-Guided Approaches for Cardiac Resynchronization Therapy (CRT)

Weihua Zhou1, Ernest V Garcia2

  • 1School of Computing, University of Southern Mississippi, 730 East Beach Blvd, Long Beach, MS, 39560, USA. weihua.zhou@usm.edu.

Current Cardiology Reports
|December 31, 2015
PubMed

Insights

Cardiac resynchronization therapy (CRT) improves heart failure but 30-40% of patients do not respond. Nuclear imaging can guide left ventricular (LV) lead placement for better CRT response by identifying scar and optimal activation sites.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Cardiac resynchronization therapy (CRT) is a standard treatment for heart failure.
  • A significant portion of patients (30-40%) do not respond to CRT, necessitating improved lead placement strategies.

Purpose of the Study:

  • To evaluate the clinical value of nuclear image-guided approaches for optimizing CRT outcomes.
  • To assess the role of myocardial viability and mechanical dyssynchrony in predicting CRT response.

Main Methods:

  • Utilizing nuclear imaging to assess left ventricular (LV) myocardial viability and mechanical dyssynchrony.
  • Guiding LV lead placement to optimal positions, avoiding scar tissue and targeting latest mechanical activation sites.
  • Navigating the LV lead to the desired coronary venous site using imaging guidance.

Main Results:

  • Nuclear image-guided CRT has demonstrated significant clinical value.
  • These approaches aid in assessing LV myocardial viability and mechanical dyssynchrony.
  • Optimal LV lead positioning is crucial for improved CRT response.

Conclusions:

  • Nuclear imaging techniques offer a valuable tool for optimizing CRT lead placement.
  • By identifying viable myocardium and precise activation sites, these methods can improve patient response rates.
  • Validated nuclear image-guided CRT approaches have the potential to impact current clinical practice.

Keywords:
Cardiac resynchronization therapy (CRT)Heart failure (HF)Left ventricle (LV)Mechanical dyssynchrony

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