Optimization of transducer distribution and transmit sequence in coherent-multi transducer ultrasound (CoMTUS) imaging

Coherent multi-transducer ultrasound (CoMTUS) imaging creates an extended effective aperture through coherent combination of multiple arrays. Such a large aperture, which dictates the image performance of the system, results in significantly improved images with enhanced resolution, extended field-of-view and higher sensitivity. This work investigates the role that the distribution of the individual arrays and the transmit sequence have in CoMTUS imaging performance. A parametric study is presented in which the geometry of the system, defined by two identical linear arrays, and the transmit sequence, using plane waves, are investigated. CoMTUS performance was assessed from the point-spread-function, in terms of first and second side lobe amplitudes and lateral resolution. Results suggest that CoMTUS performance can be enhanced by optimizing the position of the multiple arrays and the transmit sequence.