An exemplary method includes providing a filling pressure parameter, providing a perfusion parameter, determining a hemodynamic profile based at least in part on the filling pressure parameter and the perfusion parameter and adjusting a stimulation parameter of an implantable cardiac therapy device based at least in part on the hemodynamic profile. The system and method includes identifying a subset of the ultrasound data acquired from the shadow region, generating an image including a graphical indicator identifying a shadow region area generated from the subset of the ultrasound data, and displaying the image. The distal end portion of the elongate member defines a notch having a face defining an axis. The detector portion is made up of a detection coil and a tuning and matching circuit that are placed within the container. An apparatus embodying the disclosed method is also described, as well as a method for the quantitative measurement of a nerve tissue suspected of demyelination.