In addition to use as an aid in the detection and evaluation of cancers, MagSense™ technology may be able to play a significant role in monitoring the effectiveness of cancer therapies. Once the nanoparticles have been delivered to the tumor for initial detection, a subject could be measured repeatedly over the initial course of treatment with little expectation of additional risk because subsequent measurements would require only low magnetic field strength exposures and no additional injections. A reduction of measured magnetic signal would indicate a reduction in tumor size and effective therapy. Unchanged tumor signal strength would indicate ineffective therapy and prompt consideration of different therapeutic approaches. Organizations seeking to evaluate the therapeutic potential of specific targeted therapies using MagSense™ technology are encouraged to contact us.