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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

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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.
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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
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Related Experiment Video

Updated: Apr 30, 2026

MRI and PET in Mouse Models of Myocardial Infarction
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Principles of PET/MR Imaging.

Jonathan A Disselhorst1, Ilja Bezrukov2, Armin Kolb3

  • 1Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen, Germany; and bernd.pichler@med.uni-tuebingen.de.

Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
|May 14, 2014
PubMed
Summary

Hybrid PET/MR systems are advancing rapidly for clinical use. This review covers instrumentation, correction methods, and data analysis for these powerful multimodal molecular imaging tools.

Keywords:
instrumentationmagnetic resonance imagingmultimodal imagingpositron emission tomography

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Area of Science:

  • Medical Imaging
  • Molecular Imaging
  • Biophysics

Background:

  • Hybrid Positron Emission Tomography/Magnetic Resonance (PET/MR) systems have evolved significantly from prototypes to clinical applications.
  • The integration of PET and MR technologies presents unique challenges and opportunities in medical imaging.

Purpose of the Study:

  • To provide a comprehensive overview of the current state of PET/MR technology.
  • To summarize advancements in PET/MR instrumentation, correction techniques, and data analysis.
  • To highlight new opportunities in multimodal molecular imaging.

Main Methods:

  • Review of recent developments in PET/MR instrumentation, including novel detector technologies like silicon photomultipliers.
  • Discussion of MR-based techniques for PET attenuation and motion correction.
  • Exploration of data analysis strategies for multimodal PET/MR data.

Main Results:

  • Significant progress in PET/MR system design and performance.
  • Development of effective MR-based methods for PET image correction.
  • Emergence of new avenues for analyzing integrated functional and anatomical imaging data.

Conclusions:

  • Hybrid PET/MR systems offer enhanced capabilities for molecular imaging.
  • Continued innovation in instrumentation and correction methods is crucial for clinical adoption.
  • The synergistic combination of PET and MR opens new frontiers in understanding disease and brain function.