A bladder monitoring system for processing data pertaining to echo signals from a wearable bladder monitoring device comprising: securing means (27, 29) for securing the device to a subject's body; a phased array of ultrasound transducers having configurable output frequencies; a configurable phased array controller adapted to control the phased array to direct ultrasound beams (30, 30', 30") into the subject's body under a plurality of discrete beam angles and to collect echo signals (31, 31', 31") of said ultrasound beams, wherein the phased array controller is adapted to direct a set of ultrasound beams (30, 30', 30") into the subject's body for at least a subset of said discrete beam angles in response to a configuration instruction defining the respective output frequencies of the ultrasound beams in said set; and a device communication module for communicating data pertaining to said echo signals; characterized by the system comprising: a system communication module for receiving data pertaining to echo signals (31, 31', 31") from the device communication module of the wearable bladder monitoring device; and a data processor communicatively coupled to the system communication module and adapted to process the data pertaining to the echo signals to: identify an edge of the subject's pelvic bone proximal to the subject's bladder from data pertaining to at least one of said echo signals; determine an orientation of the wearable bladder monitoring device relative to the pelvic bone based on beam angle information associated with the at least one of said echo signals; and derive bladder information from the data based on the determined orientation; the data processor further being arranged to: generate the configuration instruction defining a set of output frequencies for at least a subset of said discrete beam angles based on said derived bladder information for determining a degree of turbidity of urine contained in said bladder; and control the system communication module to communicate the configuration instruction to the device communication module of the wearable bladder monitoring device. securing means (27, 29) for securing the device to a subject's body; a phased array of ultrasound transducers having configurable output frequencies; a configurable phased array controller adapted to control the phased array to direct ultrasound beams (30, 30', 30") into the subject's body under a plurality of discrete beam angles and to collect echo signals (31, 31', 31") of said ultrasound beams, wherein the phased array controller is adapted to direct a set of ultrasound beams (30, 30', 30") into the subject's body for at least a subset of said discrete beam angles in response to a configuration instruction defining the respective output frequencies of the ultrasound beams in said set; and a device communication module for communicating data pertaining to said echo signals; characterized by the system comprising: a system communication module for receiving data pertaining to echo signals (31, 31', 31") from the device communication module of the wearable bladder monitoring device; and a data processor communicatively coupled to the system communication module and adapted to process the data pertaining to the echo signals to: identify an edge of the subject's pelvic bone proximal to the subject's bladder from data pertaining to at least one of said echo signals; determine an orientation of the wearable bladder monitoring device relative to the pelvic bone based on beam angle information associated with the at least one of said echo signals; and derive bladder information from the data based on the determined orientation; the data processor further being arranged to: a system communication module for receiving data pertaining to echo signals (31, 31', 31") from the device communication module of the wearable bladder monitoring device; and a data processor communicatively coupled to the system communication module and adapted to process the data pertaining to the echo signals to: identify an edge of the subject's pelvic bone proximal to the subject's bladder from data pertaining to at least one of said echo signals; determine an orientation of the wearable bladder monitoring device relative to the pelvic bone based on beam angle information associated with the at least one of said echo signals; and derive bladder information from the data based on the determined orientation; the data processor further being arranged to: identify an edge of the subject's pelvic bone proximal to the subject's bladder from data pertaining to at least one of said echo signals; determine an orientation of the wearable bladder monitoring device relative to the pelvic bone based on beam angle information associated with the at least one of said echo signals; and derive bladder information from the data based on the determined orientation; the data processor further being arranged to: generate the configuration instruction defining a set of output frequencies for at least a subset of said discrete beam angles based on said derived bladder information for determining a degree of turbidity of urine contained in said bladder; and control the system communication module to communicate the configuration instruction to the device communication module of the wearable bladder monitoring device.