How can I say this? First of all, I have to say that I am not from Jining. However, if you want to give the pregnant mother to do four-dimensional ultrasound, I personally recommend that you go to the local Jining regular large hospitals, basically can do. As for the accuracy, the ultrasound we receive at the hospital is a two-dimensional ultrasound, and even the ultrasound screening at 20 to 24 weeks, the ultrasound is a two-dimensional ultrasound, because the two-dimensional ultrasound in the general fetal structural abnormality screening is already enough. On top of the two-dimensional ultrasound a three-dimensional stereo reconstruction is done, which we call a three-dimensional ultrasound, and consistently with the addition of a concept of time, with a video recording, that might be called a four-dimensional ultrasound. Four-dimensional ultrasound is mostly seen in some institutions for fetal testing, and not hospitals need to be carried out because of medical conditions of the fetal examination. That's why 2D ultrasound is usually used in normal obstetrics facilities in large hospitals, and 3D ultrasound is seldom used. If there is a need for a 3D ultrasound in certain cases, such as structural abnormalities in the fetus, suspected structural malformations, the doctor will provide you with a 3D ultrasound. Personal opinion, a bit wordy.
Hope this helps.
Purely hand typed hope to accept.