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Deep‐learning‐enhanced multiparametric dynamic volumetric photoacoustic computed tomography (DL‐PACT) system and 3D progressive U‐net architecture. a) Schematic diagram of the DL‐PACT using a hemispherical US transducer array. b) Comparison of the arrangements of the transducer elements: full, cluster, and sparse views. c) Architecture of 3D progressive U‐net enhancement network. US, ultrasound; OPO, optical parametric oscillator; and MUX, multiplexer.
