In executing projection processing for the purpose of enhancing the efficiency of diagnosis, if a threshold is reached again after a specific value of a pixel reaches the threshold in the x direction in which tomographic planes are arrayed, the execution of the projection processing is ended, and a projected image is generated. The method includes displaying an automatically adjustable mechanism interfaced to a bidder. In addition, the present invention relates to methods of producing quantities of isomers of these compounds and separating and purifying them using chiral separation techniques.