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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.
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Imaging atoms in medicine.

M Teresa Albelda1, Enrique García-España, Juan Carlos Frías

  • 1Instituto de Ciencia Molecular ICMOL, Universidad de Valencia, Edificio de Institutos de Paterna, Apartado de Correos 22085, 46071 Valencia, Spain.

Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
|December 3, 2008
PubMed
Summary

Medical imaging uses various atoms for detection and enhanced image quality across techniques like MRI and computed tomography. This review explores current imaging atoms and potential new candidates for medical applications.

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Materials Science

Background:

  • Technological advancements enable in-vivo human body visualization.
  • Magnetic Resonance Imaging (MRI) utilizes endogenous proton signals.
  • Other imaging modalities rely on specific elemental properties for detection.

Purpose of the Study:

  • To review current imaging atoms used in medical diagnostics.
  • To discuss the role of metallic and non-metallic atoms in various imaging techniques.
  • To explore novel imaging atoms for future medical applications.

Main Methods:

  • Literature review of established and emerging imaging atoms.
  • Analysis of atom-specific signal generation and detection principles.
  • Categorization of atoms based on imaging modality (e.g., MRI, CT, nuclear, ultrasound, optical).

Main Results:

  • Protons are key for MRI; specific atoms enhance other techniques like computed tomography and nuclear imaging.
  • Metallic and non-metallic elements offer diverse detection mechanisms.
  • Current research focuses on optimizing signal-to-noise ratio and developing new contrast agents.

Conclusions:

  • The selection of imaging atoms is crucial for diagnostic accuracy and image quality.
  • Exploring novel atoms promises to expand the capabilities of medical imaging.
  • Future research directions include targeted imaging and theranostics.