The Sonosite ICT Intra Cavity transducer has a frequency range of 4.0 MHz. – 7.0 MHz. and supports the following applications: Obstetrics, Gynaecology. The Sonosite ICT/7-4 transducer is compatible with: Sonosite 180 PLUS; Sonosite SonoHeart; Sonosite Elite ultrasound systems.