Method and apparatus for writing data to a storage array, such as but not limited to an STRAM or RRAM memory array, using a read-mask-write operation. The method can include generating digital image data depending upon an X-ray image corresponding to at least a part of the bone; transmitting a digital image data signal comprising the digital image data; and processing said digital image data signal. The bounding box has a predefined depth for limiting the scope of the evaluation. Each of the pixels composing the pixel region 3a controls an amount of light transmission with respect to a light beam in each direction from the corresponding pinhole 22a. A position encoder provides the imaging system with transducer position information over a 360 range. The resulting devices includes at least first to fourth thin film transistors, the first, third, and fourth thin film transistors having a first conductive type, and the second thin film transistors having a second conductive type.