What is the difference between 4D color ultrasound examination and B ultrasound?

Patient's question:

I took a look at the items for the prenatal check-up, and there's a 4D ultrasound detailed examination listed. I'd like to ask about the difference between a 4D ultrasound examination and a B? I think both of these are detailed examinations to see the fetal image, so what are the differences between these two? Is it necessary to have a 4D ultrasound?

Doctor's answer:

Performing 4D color MRI and routine MRI are both common imaging examinations. 4D color MRI is primarily used for screening large deformities. During pregnancy, the examination can clearly and distinctly reveal the growth and development of the child's organs, which is used to rule out congenital developmental abnormalities in children. On the other hand, the clarity and accuracy of routine ultrasound are not as good. This condition (4D color ultrasound) is not easily relieved. Friends with the condition should always maintain an optimistic attitude and face it with a positive mindset. Only in this way can they enhance their confidence in combating the condition and believe that recovery is certain.

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