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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
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...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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,...
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

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Updated: May 19, 2026

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
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Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Published on: July 30, 2009

PET/MRI: challenges, solutions and perspectives.

Hans Herzog1

  • 1Institute of Neuroscience and Medicine - 4, Forschungszentrum Jülich, 52425 Jülich, Germany. h.herzog@fz-juelich.de

Zeitschrift Fur Medizinische Physik
|August 29, 2012
PubMed
Summary

Positron emission tomography/magnetic resonance imaging (PET/MRI) combines complementary imaging strengths. This review covers developments in small animal and human PET/MRI instrumentation, highlighting challenges and future promises.

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Whole-body PET/MRI of Pediatric Patients: The Details That Matter
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Whole-body PET/MRI of Pediatric Patients: The Details That Matter

Published on: December 19, 2017

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Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
15:18

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Published on: July 30, 2009

Whole-body PET/MRI of Pediatric Patients: The Details That Matter
10:02

Whole-body PET/MRI of Pediatric Patients: The Details That Matter

Published on: December 19, 2017

Area of Science:

  • Medical Imaging
  • Radiochemistry
  • Biomedical Engineering

Background:

  • Integrating positron emission tomography (PET) and computed tomography (CT) led to exploring PET combined with magnetic resonance imaging (MRI).
  • Classical PET electronics are incompatible with MRI's magnetic fields, necessitating novel technological solutions for combined PET/MRI systems.
  • Mutual interference between PET signal processing and MRI's high-frequency signals requires innovative engineering approaches.

Purpose of the Study:

  • To review various approaches developed for small animal PET/MRI systems over the past fifteen years.
  • To discuss the recent advancements and commercial availability of human PET/MRI scanners, including brain and whole-body systems.
  • To analyze the challenges and potential applications of simultaneous and non-simultaneous PET/MRI technologies.

Main Methods:

  • Review of research group developments in small animal PET/MRI instrumentation.
  • Analysis of industrial initiatives and prototypes for human BrainPET/MRI.
  • Description of commercial simultaneous and non-simultaneous whole-body PET/MRI systems.

Main Results:

  • Multiple PET/MRI approaches for small animal imaging have been developed, each with unique features.
  • Human PET/MRI systems, including simultaneous and non-simultaneous whole-body configurations, are now commercially available.
  • Integrated PET/MRI scanners offer comprehensive multiparametric imaging, while sequential approaches also show promise.

Conclusions:

  • PET/MRI technology has evolved significantly from small animal research to human clinical applications.
  • Integrated PET/MRI scanners provide unparalleled capabilities for combined imaging.
  • Further development is expected to address current challenges and expand the clinical utility of PET/MRI.