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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,...
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Image quality using synthetic brain MRI: an age-stratified study.

Mengsha Zou1, Qin Zhou1, Ruocheng Li1

  • 1Department of Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, PR China.

Acta Radiologica (Stockholm, Sweden : 1987)
|February 13, 2023
PubMed
Summary

Synthetic MRI using the multiple-delay-multiple-echo (MDME) sequence offers comparable image quality and diagnostic performance to conventional MRI for brain evaluation, with a reduced scan time. Further consideration is needed for high signal intensity in the superior sagittal sinus on synthetic T1-weighted images.

Keywords:
Magnetic resonance imagingbrainimage qualitysynthetic magnetic resonance imaging

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Area of Science:

  • Radiology
  • Medical Imaging
  • Neuroimaging

Background:

  • Synthetic magnetic resonance imaging (MRI) offers potential to replace conventional sequences for brain evaluation.
  • It aims to shorten scan times and provide multiple quantitative parameters.

Purpose of the Study:

  • To evaluate the image quality of multiple-delay-multiple-echo (MDME) sequence-derived synthetic brain MRI.
  • Comparison was made against conventional MRI in a multi-age sample.

Main Methods:

  • 200 participants' conventional and synthetic MRI datasets were analyzed.
  • Image quality, artifacts, and diagnostic performance were assessed by two neuroradiologists.
  • Participants were categorized into normal and pathological groups based on intracranial lesions.

Main Results:

  • Synthetic MRI showed equal or greater signal-to-noise ratio and contrast-to-noise ratio (CNR) compared to conventional MRI across all age groups.
  • Significantly higher cerebellum gray/white matter CNR was observed in infants (≤2 years) with synthetic T2-fluid-attenuated inversion recovery imaging.
  • Good imaging quality was noted in most brain structures, with high signal intensity in the superior sagittal sinus on synthetic T1-weighted images as a notable finding. Diagnostic performance for lesions was similar between synthetic and conventional MRI.

Conclusions:

  • MDME sequence-derived synthetic MRI demonstrates comparable image quality and diagnostic performance to conventional MRI.
  • Synthetic MRI offers a shorter acquisition time, making it an efficient alternative.
  • The high signal intensity in the superior sagittal sinus on synthetic T1-weighted images warrants further investigation.