A combline filter has a ceramic resonator disposed inside at least one cavity wall. A conditional probability distribution is estimated for tissue at first and second points in each of the pair of CT images and the virtual non-contrast image as being the same type. The wires are placed on the first recessed portion of the lower mold. The probe is configured to provide megasonic vibrational energy to a surface of the wafer andor the wafer cleaning solution to separate contaminants from the surface of the wafer. Alternatively, a removable stabilizer is stored in a recess within the casing. The housing includes a first body configured to accommodate the developing units detachably and a second body disposed above the first body and configured to accommodate the transfer belt and the photosensitive members.