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Related Concept Videos

Cardiac Catheterization I: Pre-Procedure Overview01:28

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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
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Cardiac Catheterization III: Left Heart Catheterization01:24

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Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
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Cardiac Catheterization II: Right Heart Catheterization01:21

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Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
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Related Experiment Video

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Automatic tool segmentation and tracking during robotic intravascular catheterization for cardiac interventions.

Olatunji Mumini Omisore1,2, Wenke Duan1,2, Wenjing Du1,2

  • 1Research Centre for Medical Robotics and Minimally Invasive Surgical Devices, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.

Quantitative Imaging in Medicine and Surgery
|June 3, 2021
PubMed
Summary

This study introduces a novel segmentation method for enhanced robotic intravascular catheterization, improving guidewire tracking accuracy during cardiac interventions. The method offers superior precision and speed for safer procedures.

Keywords:
Guidewire segmentationcardiac interventionsintravascular catheterizationminimally invasive surgery (MIS)pixel trackingrobotic catheter systems

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Area of Science:

  • Medical Imaging
  • Robotics in Medicine
  • Cardiovascular Interventions

Background:

  • Cardiovascular diseases are a leading cause of mortality globally.
  • Current treatments utilize catheterization with imaging guidance.
  • Challenges remain in image-based guidance for robotic navigation, particularly with untargeted organs in X-ray frames.

Purpose of the Study:

  • To develop an automatic segmentation and tracking method for guidewire pixels in X-ray angiograms.
  • To improve image-based guidance for robotic intravascular catheterization.
  • To address limitations of existing methods in handling complex X-ray imaging conditions.

Main Methods:

  • A novel segmentation method using multiscale enhancement filtering and morphological operations was developed.
  • Guidewire pixels were detected by identifying pixel extrema and refined using morphological operations for connectivity and tracking.
  • The method was validated on X-ray angiogram sequences from robotic intravascular catheterization trials in rabbits.

Main Results:

  • Achieved high segmentation accuracy (0.995±0.001) and tracking accuracy (0.995±0.001).
  • Demonstrated low displacement (1.938±2.429 mm) and orientation errors (0.039±0.040°).
  • Outperformed 9 existing methods in segmentation accuracy (0.753±0.074 AUC), sensitivity, specificity, and execution time.

Conclusions:

  • The proposed method significantly enhances robotic intravascular catheterization for percutaneous coronary interventions (PCIs).
  • It offers improved tool tracking and visualization for interventionists.
  • Reduces operational hazards associated with intravascular catheterization procedures.