Method, apparatus and program for image processing

摘要

A method, apparatus and program for image processing capable of obtaining useful information for identifying the abnormal pulmonary ventilation region from the projected chest radiation images. An air-inhaled image obtained when air is inhaled into lungs and a gas-inhaled image obtained when non-radioactive xenon gas is inhaled into the lungs are aligned by the aligning means, and a subtraction image representing the difference between the two images aligned by the aligning means is created by the subtraction image creating means. The information representing the abnormal pulmonary ventilation region is indicated in the subtraction image in which the anatomical noise arising from the bony part and the like, and artifacts arising from the positional displacement due to the change in the bodily posture of the subject are suppressed.