Consistency of echo signal power spectra among systems and transducers

The Reference Phantom Method can be used to quantify acoustic properties of tissue by compensating for system effects using the average power spectrum from a well-characterized homogeneous medium. Widespread clinical application of the Reference Phantom Method is hindered by the need to scan the reference phantom using the same transducer, system, and system settings as used for scanning the tissue each time a new study is performed. In this investigation, we questioned the need for repeat scans of the reference phantom.