An ultrasonic measurement device includes an ultrasonic transducer device, a flexible substrate, and an integrated circuit device. A time series of images depicting a subject’s lungs during free-breathing are acquired and co-registered to a reference image. Each of the contacts includes an insulating elastic member and a conductor combined with the elastic member. Furthermore, both unsupervised and supervised machine learning can provide improved accuracy over time as more data is captured and analyzed and updates repeated. A detergent component may also be utilized in such compositions.