SYSTEMS AND METHODS FOR COMBINED ULTRASOUND AND ELECTRICAL IMPEDANCE IMAGING
Technologies Available for License Standard Agreements Invention Disclosure Invention Agreement Dartmouth Policies Trademark Program Annual Reports Related Sites		Ultrasound imaging provides good spatial resolution and can identify the borders of tissues, and possibly tumors, but the technique is unable to discriminate between benign versus malignant tissue. Electrical impedance imaging ("EII"), on the other hand, is a medical imaging technique that provides information on tissue types and pathologies. EII offers low cost, but also low resolution images. The strengths and weaknesses of ultrasound and EII complement one another such that they may be combined to provide [AH1] images containing tissue characterization information. Dartmouth inventors have developed systems and methods that combine ultrasound and EII to create 2-D or 3-D tomographic images of tissue. The EII and ultrasound imaging windows are designed to overlap in order to [AH2] facilitate accurate co-registration. In one aspect, an ultrasound probe is integrally formed with an EII electrode array. In another aspect, an EII electrode array may be provided as a modular adapter used to retrofit an existing ultrasound probe. This technology is claimed in a pending patent application. We are seeking an industrial partner interested in its commercialization. (Ref: J420)

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[AH1]Ultrasound is high resolution, however EII will not be.

[AH2]This is not exact. The overlapping is true, the data is not increased however. What the combination of ultrasound and EII allows us to do is to use the anatomical and gemoetric information contained in ultrasound to compute the electrical properties of the tissue more accurately.