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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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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
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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...
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Immunofluorescence Microscopy01:12

Immunofluorescence Microscopy

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A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
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Related Experiment Video

Updated: Jul 11, 2025

Fluorescence-mediated Tomography for the Detection and Quantification of Macrophage-related Murine Intestinal Inflammation
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Infection Imaging: Focus on New Tracers?

Wolfgang Roll1, Andreas Faust1,2, Sven Hermann2

  • 1Department of Nuclear Medicine, University Hospital Münster, Münster, Germany; and.

Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
|November 2, 2023
PubMed
Summary
This summary is machine-generated.

Molecular imaging for cardiovascular infections is evolving. New positron emission tomography (PET) tracers targeting bacteria directly offer improved accuracy over inflammation-focused methods like [18F]FDG PET.

Keywords:
cardiovascular systeminfectioninfective endocarditisvascular graft infection

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Area of Science:

  • Nuclear Medicine
  • Infectious Diseases
  • Cardiovascular Imaging

Background:

  • Cardiovascular infections cause significant morbidity and mortality, often presenting with nonspecific symptoms that complicate diagnosis.
  • Current molecular imaging methods like [18F]FDG PET and leukocyte scintigraphy detect the host immune response, making it difficult to distinguish infection from inflammation.

Conclusions:

  • Directly targeting microorganisms with novel PET tracers is a promising strategy to improve cardiovascular infection diagnosis.
  • Further research and development are needed to overcome barriers to clinical translation of bacteria-specific imaging agents.
  • Optimizing molecular imaging for cardiovascular infections requires a shift towards pathogen-specific detection methods.