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Related Concept Videos

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Related Experiment Video

Updated: Jun 15, 2026

Multi-timescale Microscopy Methods for the Characterization of Fluorescently-labeled Microbubbles for Ultrasound-Triggered Drug Release
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Multi-timescale Microscopy Methods for the Characterization of Fluorescently-labeled Microbubbles for Ultrasound-Triggered Drug Release

Published on: June 12, 2021

Microbubbles as x-ray scattering contrast agents using analyzer-based imaging.

F Arfelli1, L Rigon, R H Menk

  • 1Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy.

Physics in Medicine and Biology
|February 26, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces novel microbubble contrast agents for X-ray imaging, utilizing scattering principles for enhanced visibility. These agents offer superior contrast compared to traditional absorption-based methods.

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Multi-timescale Microscopy Methods for the Characterization of Fluorescently-labeled Microbubbles for Ultrasound-Triggered Drug Release
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Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis
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Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis

Published on: September 5, 2020

Area of Science:

  • Medical Imaging
  • Radiology
  • Materials Science

Background:

  • Conventional diagnostic radiology relies on X-ray absorption contrast agents.
  • Alternative physical principles for contrast enhancement in radiography remain largely unexplored.
  • Microbubble echo-enhancing agents, used in ultrasound, are typically invisible to standard X-ray absorption techniques.

Purpose of the Study:

  • To investigate the potential of X-ray scattering from microbubble contrast agents for enhanced radiographic imaging.
  • To evaluate the efficacy of microbubble-based contrast media using diffraction-enhanced imaging techniques.

Main Methods:

  • Experiments were conducted at the ELETTRA synchrotron radiation laboratory's medical beamline.
  • A silicon analyzer crystal, used in diffraction-enhanced imaging, was employed to detect X-ray scattering properties.
  • Phantoms containing microbubble contrast agents were imaged at various angular positions of the analyzer crystal.

Main Results:

  • Microbubble contrast agents demonstrated high visibility of details in X-ray imaging.
  • A significant contrast enhancement was observed compared to conventional X-ray absorption techniques.
  • Analyzer-based imaging effectively detected the scattering properties of the microbubble agents.

Conclusions:

  • X-ray scattering from microbubbles represents a novel and effective principle for contrast enhancement in radiography.
  • Microbubble contrast agents, when imaged using analyzer-based techniques, offer superior performance over traditional methods.
  • This approach opens new avenues for developing advanced contrast media in diagnostic radiology.