Real-time three-dimensional fetal echocardiography--optimal imaging windows.

Area of Science:

• Medical Imaging
• Cardiology
• Fetal Medicine

Background:

• Volumetric ultrasound (US) enables advanced visualization of fetal cardiac anatomy.
• Assessing fetal heart structures and spatial relationships is crucial for prenatal diagnosis.
• Acoustic shadowing can limit the utility of conventional ultrasound windows.

Purpose of the Study:

• To evaluate the usefulness of different imaging windows for acquiring fetal cardiac data using real-time 3-D ultrasound.
• To compare the quality and diagnostic value of images obtained from subcostal/subxiphoid versus other windows.
• To determine the potential of subcostal windows for detailed fetal heart assessments.

Main Methods:

• Fifteen fetuses were scanned using 2-D array volumetric ultrasound.
• Cardiac data were processed for dynamic 3-D surface and cross-sectional views.
• Image usefulness was compared between subcostal/subxiphoid and other imaging windows, considering acoustic shadowing.

Main Results:

• Subcostal windows provided useful 3-D/cross-sectional views in 50% of cases where available.
• Other imaging windows yielded sufficient views in only 19% of cases, primarily due to acoustic shadowing.
• Real-time 3-D ultrasound is a convenient method for volumetric data acquisition.

Conclusions:

• Subcostal windows can yield valuable information on fetal heart spatial relationships.
• Real-time 3-D ultrasound shows promise for fetal cardiac imaging.
• Further improvements in imaging quality are necessary for comprehensive fetal cardiac assessments.