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Related Concept Videos

Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

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...
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

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...
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

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...
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care01:30

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...

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SAVI catheter digitization impact: A single institution multiuser uncertainty study.

Vibha Chaswal1, Juan C Ramirez1, Marc Morcos1

  • 1Department of Radiation Oncology, Miami Cancer Institute, Baptist Health South Florida, Miami, Fl, 33176, USA.; Department of Radiation Oncology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA.

Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists
|September 12, 2024
PubMed
Summary

Digitization variability of Strut Adjusted Volume Implant (SAVI) catheters in HDR breast brachytherapy shows minimal impact on treatment plan quality. SAVI planning constraints remain stable, proving plan robustness to minor digitization differences.

Keywords:
DigitizationDosimetric ParametersSAVI BrachytherapyUncertaintyVariabilityWindow-Level

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Brachytherapy

Background:

  • High-dose-rate (HDR) breast brachytherapy utilizes Strut Adjusted Volume Implant (SAVI) devices for precise tumor targeting.
  • Assessing the impact of catheter digitization variability is crucial for ensuring treatment plan accuracy and patient safety.

Observation:

  • Six physicists independently digitized SAVI catheters across four clinical cases, introducing digitization variability.
  • Plans were evaluated based on PTV_Eval D90, V150, V200, and OARs (Chest-Wall/Ribs and Skin) D0.03cc, D0.1cc, D1cc, D2cc.
  • Average dwell positional digitization uncertainties were 0.36 mm, with a maximum of 0.75 mm.

Findings:

  • Despite digitization variations, average PTV_Eval D90, V150, and V200 showed clinically insignificant deviations.
  • All organs at risk (OAR) constraints for Chest-Wall/Ribs and Skin were met across all digitized plans.
  • The study demonstrated the robustness of SAVI treatment plans to minor digitization uncertainties.

Implications:

  • SAVI planning constraints are stable within acceptable digitization variations, ensuring reliable treatment delivery.
  • Uncertainty analysis aids in standardizing digitization practices and establishing action levels for quality assurance.
  • This study validates the reliability of SAVI catheter digitization in HDR brachytherapy for breast cancer treatment.