Auxiliary 2 MHz Continuous Wave (CW) transducer, model number 8251046, when used with ACUSON Sequoia ultrasound systems at SW revision 12.X. Manufactured by Siemens Medical Solutions USA, Inc., Ultrasound Business Unit, Mountain View, CA. || The ACUSON Sequoia is a general purpose Diagnostic Ultrasound system. It is intended for the following applications: Abdominal, General Imaging and Cardiology for Fetal, Abdominal, Intraoperative (abdominal and neurological), Pediatrics, Small Organs (breast, testes, thyroid, and penis), Neonatal/Adult Transvaginal, Peripheral Vessels and Musculo-skeletal (superficial and conventional). The system also provides for the measurement of anatomical structures that provide information that is used for clinical diagnosis purposes. The Siemens Aux CW transducer is a non-imaging continuous wave transducer indicated for use in transthoracic/cardiac adult and pediatric applications as well as continuous wave spectral Doppler echocardiography.