Some neat ultrasound videos of normal fetal heart

These short sonographic videos of the fetal heart show the 4 chambers clearly.
(LA= left atrium, RA= right atrium, LV= left ventricle,
RV= right ventricle).

These ultrasound video clips show the beating heart of a late 3rd trimester fetus (34 weeks gestational age).
For images, video clips of fetal heart see this link:
http://www.ultrasound-images.com/normal-anatomy.htm
For ultrasound images of fetal heart pathology and congenital anomalies of the fetal heart click this link:
http://www.ultrasound-images.com/fetal-heart.htm