The present invention is directed to a system for non-invasively detecting the presence or absence of a trauma in a tissue region utilizing a dual-modality wand-detector. The wand integrates an electromagnetic transceiver and an ultrasound transducer to simultaneously obtain interrogation signatures from the tissue region by minimizing impedance mismatches that occur due to reflected energy at interfaces. Thereafter, the interrogation signals are processed in a signal processing system utilizing dual modality and impedance software to obtain trauma condition data that is subsequently displayed.