Tips and tricks of fetal MR imaging

Area of Science:

• Radiology
• Medical Imaging
• Fetal Medicine

Background:

• Routine pelvic Magnetic Resonance (MR) imaging techniques are insufficient for fetal examinations.
• Fetal motion and the small size of the fetus present unique challenges in MR imaging.
• Accurate assessment requires specialized knowledge of both fetal and neonatal anatomy and pathology.

Purpose of the Study:

• To highlight the distinct technical considerations for fetal MR examinations compared to routine pelvic MR.
• To emphasize the importance of understanding fetal anatomy and potential artifacts for effective image interpretation.
• To underscore the need for specialized knowledge in performing and interpreting fetal MR imaging.

Main Methods:

• Image planes must be selected orthogonal to fetal anatomy to account for motion.
• Thin slices are often necessary due to the fetus's small size, posing Signal-to-Noise Ratio (SNR) limitations.
• Requires specialized knowledge of fetal anatomy, neonatal anatomy/pathology, and MR artifacts.

Main Results:

• Fetal MR imaging necessitates a modified approach compared to standard pelvic MR.
• Image quality and diagnostic accuracy are dependent on precise slice selection and artifact awareness.
• Expertise in fetal and neonatal imaging is essential for successful interpretation.

Conclusions:

• Fetal MR examinations require specific techniques to overcome challenges like fetal motion and small anatomical structures.
• A thorough understanding of fetal anatomy, neonatal conditions, and MR artifacts is vital for accurate diagnosis.
• Specialized training and knowledge are indispensable for practitioners performing fetal MR imaging.