This Siemens Px4 1 is the best type of ultrasound machine available on the market. It has many excellent features and offers streamlined, intuitive features that are better that your typical ultrasound machine. Yet, it is compact and easy to use for the average person to use. As a robust ultrasound machine, it delivers the best features to capture your attention for all types of use. Compare Siemens Px4 1 with Dynatron, Medison, Sonosite, Terason, Esaote, Chison, Apogee, Philips, Fukuda Denshi, Siemens, HP, Diasonics, Toshiba, GE, ATL.