A method for treating living tissues with electromagnetic fields by subjecting the tissues to be treated with an electromagnetic field that varies as a function of time, and without the need for a corresponding static magnetic field, is provided. Several high permittivity materials in an organic nonconductive media with enhanced properties and methods for making the same are disclosed. The pins are positioned on the same side of the drive portion of the engagement forks. Such diameter is at least about 0. The method characterizes pages or documents in a multi-dimensional vector space based upon a set of characteristics, and then uses clustering techniques to group the pages, enabling the selection of typical pages from the groups, outlier pages from extremes lying outside of the groups, or both typical and outlier pages. , echogenic microbubbles, and the imager is an ultrasound imager.