New advances in fetal MR neuroimaging

Area of Science:

• Neurology
• Medical Imaging
• Radiology

Background:

• Magnetic Resonance (MR) is a standard tool for fetal neuroimaging, effective for identifying many congenital and acquired fetal brain lesions.
• Conventional MR imaging primarily offers a morphological assessment of the fetal brain, with limitations in detecting diffuse white matter abnormalities, evaluating fiber development, and diagnosing metabolic disorders.

Purpose of the Study:

• To discuss the principles, aims, technical challenges, and potential applications of advanced MR techniques in fetal neuroimaging.
• To highlight the developing role of novel MR methods beyond conventional morphological assessment.

Main Methods:

• Review of advanced Magnetic Resonance (MR) techniques including diffusion-weighted imaging, diffusion tensor imaging, proton MR spectroscopy, and functional MR imaging.
• Discussion of the technical aspects and clinical utility of these developing techniques for fetal brain assessment.

Main Results:

• Conventional fetal MR imaging has limitations in assessing diffuse white matter abnormalities, fiber development, and metabolic disorders.
• Emerging MR techniques show promise for more comprehensive fetal brain evaluation, though not yet routinely used.

Conclusions:

• Advanced MR techniques are crucial for overcoming the limitations of conventional fetal MR imaging.
• Further development and integration of these novel techniques will enhance the diagnostic capabilities in fetal neuroimaging.