Toshiba PST-50BT sector cardiac ultrasound transducerForm Factor: Phased ArrayApplications: Pediatric HeartFrequency Range: 3.0 - 6.0 MHz.Compatibility: Toshiba Aplio 300 (TUS-A300); Toshiba Aplio 500 (TUS-A500); Toshiba Artida (SSH-880CV)