Atharvam Diagnostics And Polyclinic is the Best Sonography (2D,4D and Colour Doppler) Centre in Ravet,Kiwale,Punawale,Nigdi and entire Pimpri Chinchwad. 2D/4D sonography refers to a combination of ultrasound technologies that use sound waves to create images of the inside of the body. A 2D ultrasound provides flat, black-and-white, cross-sectional images, while a 4D ultrasound adds the element of time to create a live, moving video effect of the 3D images. The “2D” part is a standard diagnostic tool, while the “4D” component is often used for a more detailed and dynamic view, such as seeing a baby move or yawn in the womb.