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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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Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra

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Brain and spine MRI artifacts at 3Tesla.

M I Vargas¹, J Delavelle, R Kohler

¹Division of Neuroradiology, Department of Radiology, Geneva University Hospital, 24, road Micheli-du-Crest, 1211 Geneva 14, Switzerland. Maria.i.Vargas@hcuge.ch

Journal of Neuroradiology = Journal De Neuroradiologie

|October 7, 2008

Summary

Recognizing common MRI artifacts in 3T neuroradiology is crucial to prevent misdiagnosis. Understanding these common magnetic resonance imaging artifacts, like pulsation and susceptibility, can improve diagnostic accuracy and avoid unnecessary treatments.

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Area of Science:

Radiology
Medical Imaging
Neuroradiology

Background:

Routine 3 Tesla (3T) magnetic resonance imaging (MRI) in clinical neuroradiology frequently encounters artifacts.
These artifacts can mimic pathological conditions, potentially leading to diagnostic errors.

Purpose of the Study:

To illustrate the most common MRI artifacts encountered in 3T clinical neuroradiology.
To highlight how these artifacts can interfere with accurate diagnosis.

Main Methods:

Analysis of artifacts detected over two years using a 3-T Magnetom Trio MRI system.
Focus on neuroradiology cases (2705 patients) to identify and select representative artifact examples.

Main Results:

Pulsation artifacts were most common (57%), followed by magnetic susceptibility artifacts (29%).
Other observed artifacts included homogeneity (3%), motion (6%), and truncation (3%), along with technique-related issues.

Conclusions:

High-field MRI (3T) offers advanced imaging capabilities but requires artifact recognition for accurate diagnosis.
Identifying and understanding these artifacts is vital to prevent misdiagnosis and unnecessary patient treatment.
Many common artifacts can be avoided through proper MRI technique.