What is the reason for the unclear fingers shown in the four-dimensional color Doppler ultrasound?

Patient's question:

No

Doctor's answer:

Hello, during the ultrasound examination in April or May, it should be possible to see the limbs. However, the position or posture might not be ideal. In this case, it is recommended to have a follow-up ultrasound to comprehensively observe the limbs and rule out any deformities.