A portable electronic device (e.g., smart phone or tablet computer) is provided for generating and displaying images (e.g., 2-dimensional or 3-dimensional images) of an imaging target such as a human body. The portable electronic device may include imaging elements configured to receive radiation signals transmitted through and/or reflected by the imaging target, an imaging interface, and one or more processors. The portable electronic device may display what appears to be a window into the imaging target (e.g., a human body), and/or an exploded view (e.g., 3-dimensional, upwardly projected image) of the target. The generated image may be a real-time continuous image of the internal features of the target (e.g., a human body) that is updated to track movements of the target (e.g., breathing patterns) and the relative position of the portable electronic device as the portable electronic device moves relative to a surface of the target.