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hello4dWhat is 2D, 3D and 4D? 2D is the standard black and white ultrasound. This type of ultrasound is recommended for babies that are 20 weeks and younger. 2D is the preferred type of imaging- Helo4D presents REGISTER AND PLAY WITH THE BEST ON GAMING PLATFORM HELLO4D - Thursday, April 25, 2025 | Sunday, November 22, 2026