Table 1.

Criteria to evaluate whether fetal echocardiography views generated by color Doppler Fetal Intelligent Navigation Echocardiography (FINE) of color or S‐flow Doppler spatiotemporal image correlation volume datasets of normal fetal hearts contain appropriate Doppler information

Fetal echocardiography view generated by color Doppler FINE	Criteria for appropriate Doppler information
Four chamber	Diastolic perfusion across atrioventricular valves (two separate and equal color stripes), with no evidence of valve regurgitation during systole
	No color flow observed crossing ventricular septum
Five chamber	Systolic perfusion in aortic root emerging from left ventricle
	Aortic valve closed and non‐regurgitant in diastole
Left ventricular outflow tract	Systolic perfusion across aortic valve without retrograde flow
Short‐axis view of great vessels/right ventricular outflow tract	Systolic perfusion across pulmonary valve, trunk, ductus arteriosus and right pulmonary artery without retrograde flow
	Diastolic perfusion through tricuspid valve
Three vessels and trachea	Systolic perfusion through pulmonary trunk and ductus arteriosus, as well as transverse aortic arch and isthmus (antegrade and equal flow in both great vessels)
	Ductal and aortic arches positioned to left of trachea and spine, forming V‐configuration as they join descending aorta
	Color flow within superior vena cava may or may not be depicted
Abdomen/stomach	Stomach on left side of abdomen
	Transverse section of descending aorta in front and to left of spine
	Liver visualized
	Flow within descending aorta and inferior vena cava may or may not be depicted
Ductal arch	Systolic perfusion through pulmonary trunk and ductus arteriosus
	Flow within descending aorta may or may not be depicted
Aortic arch	Systolic perfusion through ascending aorta and transverse aortic arch
	Flow within descending aorta may or may not be depicted
Superior and inferior venae cavae	Blood flow in superior and inferior venae cavae towards right atrium