A system for imaging an airway for assessing obstructive sleep apnea (OSA) can include first and second ultrasound transducer arrays on first and second body members, respectively, configured to adhere the first and second ultrasound transducer arrays at first and second fixed positions on a neck while ultrasound scanning. A processor circuit can be coupled to the first and second ultrasound transducer arrays, the processor circuit configured to operate the first and second ultrasound transducer arrays for pulse-echo imaging of a soft tissue-airway interface to generate respective first and second volumetric ultrasound image data sets in real-time to provide an integrated volumetric image of the soft tissue-airway interface from the first and second fixed positions on the neck.