Philips SONDE CARDIAQUE PHILIPS S4 - 21330A

Philips S4 Cardiac Ultrasound Probe – 21330A

The Philips S4, reference 21330A, is a phased-array sector ultrasound transducer designed for diagnostic imaging. Its sector scanning design is well suited to examining deeper anatomical structures, particularly for cardiac applications.

Technical Specifications

• Model: Philips S4
• Reference: 21330A
• Probe type: Phased-array sector
• Technology: UltraBand / broadband
• Frequency range: 2–4 MHz
• Primary application: Cardiac imaging
• Other documented application: Abdominal imaging

Clinical Applications

The S4 21330A is primarily designed for cardiac examinations. Its sector configuration and frequency range are suitable for imaging deeper anatomical structures. It is also documented for selected abdominal applications.

• Echocardiography
• Adult cardiology
• Cardiac imaging
• Abdominal examinations
• Deep anatomical structure imaging

Imaging Modes

The S4 21330A is documented for several ultrasound imaging modes, supporting both anatomical visualization and blood-flow assessment.

• B-mode
• M-mode
• Pulsed-wave Doppler (PWD)
• Continuous-wave Doppler (CWD)
• Color Doppler
• Combined imaging and Doppler modes

Design and Technology

The S4 21330A uses a phased-array sector design. This architecture is particularly suitable for echocardiography because it provides a sector-shaped imaging field from a relatively compact acoustic window. Its UltraBand technology and 2–4 MHz frequency range are designed for ultrasound imaging of deeper structures.

Cardiac Use

The sector configuration of the Philips S4 makes it particularly suitable for echocardiography. The probe provides real-time imaging of cardiac structures and can be combined with Doppler modes for assessment of blood flow.