The Samsung Accuvix XG Ultrasound Machine was the top of the line system from Samsung prior to the release of the newer Accuvix A30. The XG was meant as a direct replacement to the popular Accuvix XQ as a shared service system capable of both 4D OBGYN images as well as full cardiac scans.
Samsung Accuvix XG Ultrasound Machine has been in the 4D ultrasound game for longer than any existing company (including GE). In fact, the Samsung Accuvix XG Ultrasound Machine was a Medison product before GE purchased the rights to it. Medison has done 4D since 1996, and GE entered the game 5 years later when it acquired the Voluson 730 line from Medison.