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Related Concept Videos

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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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.
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Electric Field01:16

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Consider two point charges, each exerting Coulomb force on the other. It is possible to describe the Coulomb interaction via an intermediate step by defining a new physical quantity called the electric field.
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Magnetic Fields01:27

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A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
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Electromagnetic Fields01:30

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Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
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Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
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Related Experiment Video

Updated: Jan 23, 2026

Use of Ultra-high Field MRI in Small Rodent Models of Polycystic Kidney Disease for In Vivo Phenotyping and Drug Monitoring
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Multinuclear MRI at Ultrahigh Fields.

Sebastian C Niesporek1, Armin M Nagel1,2,3, Tanja Platt1

  • 1Division of Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.

Topics in Magnetic Resonance Imaging : TMRI
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Summary
This summary is machine-generated.

Non-proton magnetic resonance imaging (MRI) at ultrahigh magnetic fields (UHFs) enables advanced biomedical research. This review covers developments and applications for nuclei like sodium (Na) MRI, offering new diagnostic insights.

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Nuclear Magnetic Resonance

Background:

  • Non-proton magnetic resonance imaging (MRI) at ultrahigh magnetic fields (UHFs) is advancing.
  • Efficient imaging of physiologically relevant nuclei (e.g., Na, Cl, K, O, P) is now feasible.
  • This provides spatially and temporally resolved biomedical and diagnostic information.

Purpose of the Study:

  • To provide an overview of current developments and research applications for non-proton UHF MRI.
  • To highlight the significance of sodium (Na) MRI as a widespread multinuclear imaging method.
  • To introduce potential applications in clinical research using UHF MRI.

Main Methods:

  • Review of current literature on non-proton UHF MRI techniques.
  • Focus on advancements in pulse sequence, post-processing, and hardware design.
  • Discussion of specific nuclei imaging, including Na, O, P, Cl, and K.

Main Results:

  • Na MRI is the most common multinuclear method, offering the second-largest in vivo NMR signal after proton (H).
  • Increasing use of O and P MRI for energy metabolism and Cl and K MRI for cell viability at UHF.
  • Availability of whole-body UHF (≥7T) scanners expands detectable nuclei.

Conclusions:

  • Non-proton UHF MRI methods are maturing for biomedical applications.
  • Further development is needed for clinically feasible measurement times.
  • This technology holds promise for enhanced clinical research and diagnostics.