An adjustable door hinge for joining a combination of doors maintained by an adjacent structure having a hinge cup and a hinge arm movably attached to the hinge cup. The image acquisition system is arranged to capture at least one of a single image or multiple images or video of cells within the target tissue using at least one of bright field or dark field ring illumination divided into independently operated segments to obtain a plurality of data sets. Both transmitter circuitry and receiver circuitry may include of a phase-locked loop circuit having a voltage-controlled oscillator.