Movie shows a 19 week fetus in 3 dimensional (3D) in realtime (hence 4D). The beginning of the movies shows the fetus lying with head to right and lower limbs to left. The overlay shows region selected for realtime 3D scanning. (More? Labelled Image)
The 4D view (dorsolateral) Arrow indicates: initially head, then upper limbs, then lower limbs, then umbilical cord and finally the placenta. The second part of movie shows fetal movements.
Quicktime movie: 19wk4D.mov (3 Mb) in new window.
(Quicktime H264 video compression, 672x512, 23 seconds, greyscale)
Image from beginning of above movie showing scan region in 4D movie, lower limb, skull and lower jaw clearly visible. Note "crown" to "rump" length (CRL) used in the staging/ageing of the fetus. Shape of scanning region (envelope) indicates probe located at top of image.
Movie image below from above scan region (rotated 90 degrees in 2 planes) showing dorsolateral view of fetus: head to top, upper limbs, lower limbs and umbilical cord visible. Note the fetal proportions including teh extended "neck" region.
Compare the size of this fetus with the earlier 12 week ultrasound images.
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UNSW Embryology has many movies to show some of the dynamic changes that occur during embryonic development. These have been grouped together on separate pages (listed in righthand menu) that can be also be opened from a pull down menu on each page.
Special thanks to Dr Andrew McLennan, Foetal Medicine Unit, Royal North Shore Hospital for original video materials.
There are additional 2D, 3D and Multiplanar ultrasound movies available from the listed ultrasound links on this page.
There also an about movies page which has technical details and terms listed.
Both Mac and PC computers require the Quicktime plug-in to be present in your browser or on your computer.
Internet users note that some of these movies are large and will take some time to download depending on your connection speed.
DVD users can find Quicktime on the DVD or the latest version can be downloaded from here Quicktime
Please email Dr Mark Hill if you wish to make a comment about this current project.