Samplify Systems of Santa Clara, CA has announced AutoFocusT beamforming technology which allows for high-performance, low-power ultrasound machines. The AutoFocusT engine automatically refocuses the receiver to capture reflections at different scan depths and alleviates the real-time requirement of calculating and downloading the delay and weighting coefficients in the back-end computer. Four scan-lines are formed simultaneously using QuadBeamT phased array technology for higher frame rates and improved lateral resolution.
Features (from the press release):
AutoFocusT engine calculates and updates delay and apodization weights every 0.5 mm, and interpolates every sample period. Provides programmable initial and maximum scan depths, and programmable F# and window functions. QuadBeam phased-array technology forms four simultaneous scan-lines. Compared with many current implementations that form a single beam, QuadBeam enables higher ultrasound frame-rates for color overlays and higher lateral resolution with multiple transmit focus depths. QuadBeam also enables a low-power mode requiring 75 percent fewer transmissions per frame. Table driven architecture supports up to 512 pre-defined scan-line settings such as origin coordinates, aperture values, and steering angles allowing interleaving B-mode and color modes. Tables defining transducer geometries are also provided for each element. Refractive Index Correction improves beamformer performance by correcting phase errors caused by speed of sound differences between the probe case and body. AutoFocus beamformer updates these corrections every 0.5mm during scan.