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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...

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Solid Phase 11C-Methylation, Purification and Formulation for the Production of PET Tracers
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Advancing Positron Imaging with Alginate-Based Tracers: Design, Synthesis, and Radiolabelling Methods.

Chloe Huckvale Bruno1, Daniele Baiocco2,3, William J Peace2

  • 1School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, The United Kingdom.

Methodsx
|May 11, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces novel designer tracer particles using alginate hydrogels and evaporative radiolabelling for improved Positron Emission Particle Tracking (PEPT) and Positron Emission Tomography (PET) applications. These robust, high-activity tracers overcome challenges in radiolabelling solid particulates.

Keywords:
AlginateFluoride adsorptionNuclear imagingParticle tracking

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Area of Science:

  • Nuclear imaging
  • Materials science
  • Chemical engineering

Background:

  • Positron Emission Particle Tracking (PEPT) and Positron Emission Tomography (PET) are crucial for flow visualization and medical diagnostics.
  • Effective radiolabelling of solid particulates is essential but technically challenging for these techniques.

Purpose of the Study:

  • To develop a method for fabricating and radiolabelling "designer" tracer particles.
  • To create robust, high-activity tracers for PEPT and PET applications.

Main Methods:

  • Synthesis of porous alginate hydrogel particles via extrusion dripping.
  • Characterization of the fabricated tracer particles.
  • Evaporative radiolabelling technique for high single-particle activity.

Main Results:

  • Production of small, mechanically robust tracer particles.
  • Achieved high single-particle activity and excellent radiochemical stability.
  • Demonstrated customisation of tracer properties through formulation and process control.

Conclusions:

  • The developed method offers a viable solution for producing advanced radiolabelled tracers.
  • This approach enhances the utility of PEPT and PET in industrial and biological settings.
  • Customizable alginate-based tracers facilitate improved flow visualization and diagnostics.