1. A medical image measuring apparatus, comprising: a tissue information label assigning unit that assigns each point of a medical image with a tissue information label representing tissue information to which the each point belongs; a measuring unit that performs measurement in the medical image; and a measurement subject label assigning unit that determines, based on a tissue information label assigned to a measurement point or a point within a region of interest used for the measurement, a measurement subject label representing a measurement subject and assigns the measurement subject label to a result of the measurement.