Table 1: Performance and fabrication parameters of several typical real-time 2D array transducers.

MethodsMill cross
Mill cross
T4 scanner
: 25 mm)
Receive multiplexing
4Z1c matrix phased arrayImasonic SaS Voray (256 elements)

Frame rate8 frames/s8 frames/s22 volumes/s60 volumes/s24 volumes/s50 volumes/s
Scan view65°65°64°65°90°
Frequency1.7 MHz1–2.3 MHz2–3.5 MHz5 MHz2.8 MHz4 MHz
Volume size
Resolution mm2.5 mm200 μm
Authorsvon Ramm et al. [100] (1990)von Ramm et al. [101] (1991)Stetten et al. [102] (1998)Yen and Smith [6] (2004)Frey and Chiao [103] (2008)Deán-Ben et al. [104] (2015)