Columbia subject headings:
Brain--Abnormalities--Diagnosis.
Brain--Diseases--Diagnosis.
Diagnostic ultrasonic imaging.
Fetus--Diseases--Diagnosis.
Infants--Diseases--Diagnosis.
Newborn infants--Diseases--Diagnosis.
Tomography.
Ultrasonics in obstetrics.
Harvard subject headings:
Brain--Abnormalities--Diagnosis
Brain--Diseases--Diagnosis
Brain--Imaging
Brain--Tomography
Diagnostic ultrasonic imaging.
Fetus--Diseases--Diagnosis
Fetus--Ultrasonic imaging
Infants--Diseases--Diagnosis
Newborn infants--Diseases--Diagnosis.
Princeton subject headings: