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Magnetic Resonance Imaging

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...

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A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...

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Related Experiment Video

Updated: May 19, 2026

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

Published on: May 10, 2012

MRI temporal acceleration techniques.

Jeffrey Tsao¹, Sebastian Kozerke

¹Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, USA. jtsao2@hotmail.com.

Journal of Magnetic Resonance Imaging : JMRI

|August 21, 2012

Summary

This summary is machine-generated.

Faster magnetic resonance imaging (MRI) techniques exploit image redundancy for quicker scans. This review categorizes and explains various accelerated MRI methods, enhancing dynamic imaging across clinical applications.

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Area of Science:

Medical Imaging
Biomedical Engineering
Radiology

Background:

Magnetic Resonance Imaging (MRI) is crucial for dynamic imaging applications.
Scan speed limitations hinder real-time clinical assessments.
Recent advancements focus on accelerating MRI acquisition techniques.

Purpose of the Study:

To review and categorize recent advancements in accelerated MRI techniques.
To provide conceptual frameworks for understanding MRI scan acceleration methods.
To clarify the mechanics and interconnections of various speed-enhancing MRI approaches.

Main Methods:

Review of emerging MRI techniques exploiting temporal or spatiotemporal redundancy.
Categorization of methods including view sharing, keyhole, k-t imaging, and compressed sensing.
Analysis of underlying principles and relationships between different acceleration strategies.

Main Results:

Accelerated MRI techniques significantly improve scan speed and image resolution.
These methods enhance performance in cardiac imaging, perfusion studies, and angiography.
A proliferation of acronyms necessitates a structured overview of these techniques.

Conclusions:

Scan acceleration in MRI offers substantial benefits for dynamic imaging.
Understanding the diverse techniques is essential for their effective clinical application.
This review provides a framework for navigating the rapidly evolving field of accelerated MRI.