A medical ultrasound apparatus and associated methods of use is disclosed enabling a relatively non-invasive or minimally invasive method to treat skin or tissue. The grinding wheel is a diamond cup-type grinding wheel. The buried part of the gate region is formed by forming a cavity under the channel region. Most of the management functions are retained in the central database and remote offices, which generally do not retain data management information, communicate with the central office to retrieve data management information. The fabric is cut resistant and form fitting by virtue of cut-resistant synthetic fibers, inorganic fibers and elastomeric fibers being combined in a particular manner. The rotation control system preliminarily rotates the rotating object in detecting the rotational position information.