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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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Updated: Jun 9, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

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Comparison of Syn T2-FLAIR and Syn DIR with conventional T2-FLAIR in displaying white matter hyperintensities in

Zhen-Zhen Liu¹, Hai-Yang Yu², Yuan-Hui Li¹

¹Department of Radiology, the Third Affiliated Hospital of Sun Yat-Sen University, No. 600 Tianhe Road, Guangzhou, 510630, People's Republic of China.

|October 21, 2024

Summary

Synthetic MRI sequences, Syn T2-FLAIR and Syn DIR, offer clearer and more sensitive detection of white matter hyperintensities (WMHs) in young migraine patients compared to conventional MRI. These advanced techniques improve visualization, particularly in deep and juxtacortical white matter regions.

Keywords:

Conventional MRI DIR Migraine Synthetic MRI White matter hyperintensity

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Published on: July 28, 2013

Area of Science:

Neuroradiology
Neuroimaging
Medical Imaging Analysis

Background:

Young migraine patients frequently exhibit white matter hyperintensities (WMHs) visible on magnetic resonance imaging (MRI).
The diagnostic utility of conventional MRI sequences for detecting WMHs in this population can be limited.
Investigating advanced MRI techniques is crucial for improving WMH detection.

Purpose of the Study:

To evaluate the clarity and sensitivity of synthetic (Syn) T2-FLAIR and Syn double inversion recovery (DIR) sequences in detecting WMHs.
To compare the performance of Syn T2-FLAIR and Syn DIR against conventional T2-FLAIR in young migraine patients.

Main Methods:

Prospective analysis of conventional MRI and Syn MRI data from 50 young migraine patients.
WMHs were systematically recorded in periventricular, deep white matter, and juxtacortical regions.
Quantitative and qualitative comparisons of lesion detection and boundary clarity across the three MRI sequences.

Main Results:

Syn T2-FLAIR and Syn DIR demonstrated significantly clearer visualization of WMHs than conventional T2-FLAIR (P < 0.001).
Both Syn T2-FLAIR and Syn DIR detected more WMHs in deep white matter compared to conventional T2-FLAIR (P < 0.001, P = 0.006).
Syn T2-FLAIR identified the highest number of juxtacortical WMHs, surpassing Syn DIR and conventional T2-FLAIR (P < 0.001).

Conclusions:

Synthetic T2-FLAIR and Syn DIR sequences provide enhanced clarity and sensitivity for detecting WMHs in young migraine patients.
These advanced sequences are particularly effective in revealing WMHs in deep and juxtacortical white matter areas.
Syn T2-FLAIR and Syn DIR represent valuable tools for improving the assessment of WMHs in migraine.