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Upper GI Series: Barium Swallow

Upper GI Series: Barium Swallow

The Barium Swallow Study, or a Barium Esophagogram, is a diagnostic imaging method used to visualize the upper gastrointestinal (GI) tract, including the esophagus, stomach, and small intestine. It employs barium sulfate, a radiopaque contrast material, to provide clear images of the upper digestive system, helping to identify abnormalities, diseases, or structural issues.
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...

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Updated: Jun 7, 2025

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

Radiopaque Polyurethanes Containing Barium Sulfate: A Survey on Thermal, Rheological, Physical, and Structural

Heitor Luiz Ornaghi Júnior¹, Benoit Duchemin², Sanae Azzaye²

¹Mantova Industria de Tubos Flexíveis, R. Isidoro Fadanelli, 194, Centenário, Caxias do Sul CEP 95045137, Brazil.

|November 9, 2024

Summary

This summary is machine-generated.

Adding barium sulfate to radiopaque polyurethanes (TPUs) affects their properties. Higher concentrations increase radiopacity but alter rheological and thermal characteristics, guiding material development for biomedical applications.

Keywords:

barium sulfate biomedical applications polyurethane radiopacity

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Published on: December 11, 2014

Area of Science:

Biomaterials Science
Polymer Chemistry

Background:

Radiopaque polyurethanes are crucial in biomedical applications due to their versatile properties.
Barium sulfate is a common radiopacifier used to enhance visibility in medical imaging.

Purpose of the Study:

To investigate how varying barium sulfate concentrations impact the properties of thermoplastic polyurethanes (TPUs).
To compare custom-formulated TPUs with a commercial product (PL 8500 A).

Main Methods:

Fourier Transform Infrared Spectroscopy (FTIR) to assess chemical structure.
Differential Scanning Calorimetry (DSC) for thermal analysis.
Rheological analysis to evaluate flow properties.
X-radiography for radiopacity assessment.
X-ray microtomography for structural and particle morphology analysis.

Main Results:

FTIR confirmed consistent TPU matrix across all samples.
DSC revealed PL 8500 A has a more amorphous structure; higher barium sulfate content influenced kinetic degradation.
Rheological tests showed decreased complex viscosity and storage modulus with increasing radiopacifier.
Radiopacity increased with higher barium sulfate content.
X-ray microtomography indicated heterogeneous, spherical particles in PL 8500 A versus other samples.

Conclusions:

Barium sulfate concentration significantly influences the rheological, thermal, and radiopacity properties of TPUs.
Understanding these structure-property relationships is key for designing tailored radiopaque biomaterials.
Findings support the development of customized TPUs for specific biomedical applications.