An ultrasound transducer for producing an ultrasound signal, the ultrasound transducer comprising: an array of ultrasound transducing elements ; a plurality of transducer drive lines , each transducer drive line being configured to provide an electrical signal capable of driving a subset of the ultrasound transducing elements of the array of ultrasound transducing elements; an array of control circuits , wherein each individual control circuit of the array of control circuits comprises a drive switch and a memory element , the drive switch being a switch having an on-state and an off-state, the drive switch comprising at least one thin-film transistor , the memory element being configured to store and control the state of the drive switch ; wherein each individual ultrasound transducing element of the array of ultrasound transducing elements has one associated control circuit of the array of control circuits and one associated transducer drive line of the plurality of transducer drive lines, wherein the ultrasound transducer is configured to, for each individual ultrasound transducing element : drive the individual ultrasound transducing element by the associated transducer drive line when the drive switch of the associated control circuit is in the on-state, such that the individual ultrasound transducing element is activated when the drive switch is in the on-state and the individual ultrasound transducing element is deactivated when the drive switch is in the off-state; whereby activated ultrasound transducing elements of the array of ultrasound transducing elements function as ultrasound emitters that collectively form the ultrasound signal. an array of ultrasound transducing elements ; a plurality of transducer drive lines , each transducer drive line being configured to provide an electrical signal capable of driving a subset of the ultrasound transducing elements of the array of ultrasound transducing elements; an array of control circuits , wherein each individual control circuit of the array of control circuits comprises a drive switch and a memory element , the drive switch being a switch having an on-state and an off-state, the drive switch comprising at least one thin-film transistor , the memory element being configured to store and control the state of the drive switch ; wherein each individual ultrasound transducing element of the array of ultrasound transducing elements has one associated control circuit of the array of control circuits and one associated transducer drive line of the plurality of transducer drive lines, wherein the ultrasound transducer is configured to, for each individual ultrasound transducing element : drive the individual ultrasound transducing element by the associated transducer drive line when the drive switch of the associated control circuit is in the on-state, such that the individual ultrasound transducing element is activated when the drive switch is in the on-state and the individual ultrasound transducing element is deactivated when the drive switch is in the off-state; whereby activated ultrasound transducing elements of the array of ultrasound transducing elements function as ultrasound emitters that collectively form the ultrasound signal. drive the individual ultrasound transducing element by the associated transducer drive line when the drive switch of the associated control circuit is in the on-state, such that the individual ultrasound transducing element is activated when the drive switch is in the on-state and the individual ultrasound transducing element is deactivated when the drive switch is in the off-state; whereby activated ultrasound transducing elements of the array of ultrasound transducing elements function as ultrasound emitters that collectively form the ultrasound signal. <EOS>