A dual mode ultrasound transducer system (10, 110) comprising: an array of ultrasound transducer elements (22, 122), the ultrasound transducer elements configured to deliver one or more therapy shots, each therapy shot comprising a plurality of sequential therapy bursts of ultrasonic energy to at least a portion of a target region and to transmit/receive imaging ultrasonic energy to/from the target region; and a control apparatus comprising: means for controlling conveyance of imaging signals (42, 44) to/from one or more of the plurality of ultrasound transducer elements; means for generating treatment region image data usable to identify at least one or more target points within a target region based on imaging signals (42, 44) conveyed to/from one or more of the plurality of ultrasound elements; means for generating therapy signals to drive one or more of the plurality of ultrasound transducer elements to deliver a plurality of sequential therapy bursts of ultrasonic energy to at least one of the one or more target points in the target region, wherein each of the sequential therapy bursts is defined to produce a response at one or more target points within the target region; and means for generating control image data based on imaging signals (42, 44) from one or more of the plurality of ultrasound transducer elements, characterized in that: the time between therapy bursts is less than 10 milliseconds; and the control apparatus is configured to generate control image data based on imaging signals from one or more of the plurality of ultrasound transducer elements, during and/or following delivery of each therapy burst of a plurality of sequential therapy bursts and to use the control image data generated during and/or following delivery of a therapy burst to generate therapy signals to drive one or more of the plurality of ultrasound transducer elements to deliver a subsequent therapy burst of the plurality of sequential therapy bursts. an array of ultrasound transducer elements (22, 122), the ultrasound transducer elements configured to deliver one or more therapy shots, each therapy shot comprising a plurality of sequential therapy bursts of ultrasonic energy to at least a portion of a target region and to transmit/receive imaging ultrasonic energy to/from the target region; and a control apparatus comprising: means for controlling conveyance of imaging signals (42, 44) to/from one or more of the plurality of ultrasound transducer elements; means for generating treatment region image data usable to identify at least one or more target points within a target region based on imaging signals (42, 44) conveyed to/from one or more of the plurality of ultrasound elements; means for generating therapy signals to drive one or more of the plurality of ultrasound transducer elements to deliver a plurality of sequential therapy bursts of ultrasonic energy to at least one of the one or more target points in the target region, wherein each of the sequential therapy bursts is defined to produce a response at one or more target points within the target region; and means for generating control image data based on imaging signals (42, 44) from one or more of the plurality of ultrasound transducer elements, means for controlling conveyance of imaging signals (42, 44) to/from one or more of the plurality of ultrasound transducer elements; means for generating treatment region image data usable to identify at least one or more target points within a target region based on imaging signals (42, 44) conveyed to/from one or more of the plurality of ultrasound elements; means for generating therapy signals to drive one or more of the plurality of ultrasound transducer elements to deliver a plurality of sequential therapy bursts of ultrasonic energy to at least one of the one or more target points in the target region, wherein each of the sequential therapy bursts is defined to produce a response at one or more target points within the target region; and means for generating control image data based on imaging signals (42, 44) from one or more of the plurality of ultrasound transducer elements, characterized in that: the time between therapy bursts is less than 10 milliseconds; and the control apparatus is configured to generate control image data based on imaging signals from one or more of the plurality of ultrasound transducer elements, during and/or following delivery of each therapy burst of a plurality of sequential therapy bursts and to use the control image data generated during and/or following delivery of a therapy burst to generate therapy signals to drive one or more of the plurality of ultrasound transducer elements to deliver a subsequent therapy burst of the plurality of sequential therapy bursts. the time between therapy bursts is less than 10 milliseconds; and the control apparatus is configured to generate control image data based on imaging signals from one or more of the plurality of ultrasound transducer elements, during and/or following delivery of each therapy burst of a plurality of sequential therapy bursts and to use the control image data generated during and/or following delivery of a therapy burst to generate therapy signals to drive one or more of the plurality of ultrasound transducer elements to deliver a subsequent therapy burst of the plurality of sequential therapy bursts.