Potential of magnetic resonance for imaging the fetal heart

Area of Science:

• Medical Imaging
• Cardiology
• Prenatal Diagnosis

Background:

• Significant congenital heart disease (sCHD) is a major cause of neonatal death, necessitating accurate prenatal detection.
• Prenatal diagnosis of cardiac abnormalities aids in parental counseling and perinatal management.
• Echocardiography (ECG) is the standard for fetal cardiac assessment but can be limited by image quality and operator experience.

Purpose of the Study:

• To review the potential of fetal magnetic resonance imaging (MRI) in delineating fetal heart anatomy and pathologies.
• To explore how fetal MRI can complement echocardiography in detecting cardiovascular and extracardiac lesions.
• To discuss the limitations of current fetal cardiac MRI and ongoing developments to overcome them.

Main Methods:

• Review of existing literature on fetal cardiac MRI.
• Analysis of the capabilities of MRI in assessing fetal cardiovascular anatomy and disease.
• Identification of challenges in fetal cardiac imaging, such as fetal heart rate and movement.

Main Results:

• Fetal MRI shows potential to complement ultrasound in detecting cardiovascular malformations and extracardiac lesions.
• Current fetal cardiac MRI is not routine but is emerging as a valuable second-line approach.
• Ongoing developments aim to address limitations like fast fetal heart rates and fetal motion.

Conclusions:

• Fetal MRI is a developing tool with significant potential to enhance the prenatal diagnosis of congenital heart disease.
• Further advancements in MRI technology are crucial for routine clinical application in fetal cardiac imaging.
• Combining fetal MRI with echocardiography may improve the comprehensive assessment of fetal cardiac conditions.