A specific site location measuring includes: calculating matching degrees based on a plurality of transmission images imaged by use of radiation transmitting through a specimen and a template set； selecting a template transmission image from the plurality of transmission images based on the matching degrees； adding a new template generated based on the template transmission image, to the template set； imaging a location measurement transmission image by use of radiation transmitting through the specimen； selecting an optimal template that is the most similar to a portion of the location measurement transmission image, from the template set by performing pattern matching of each of templates of the template set with the location measurement transmission image； and calculating a specific site location based on the location measurement transmission image and the optimal template.
