Datasets of Fetus

Can anyone suggest a website or can provide information on how to find free data set samples of a fetus. I am open to any file type.

You can find one volume here: Loading of GE/Kretz ultrasound volumes (.vol file). You can find thousands of 2D+t ultrasound sequences on YouTube, but I’m not aware of any public collection of 3D fetal images.

You can check