DIAGNOSIS SUPPORT APPARATUS, DIAGNOSIS SUPPORT METHOD, LESIONED PART DETECTION APPARATUS, AND LESIONED PART DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a diagnosis support apparatus appropriately perform detection of a lesion part by taking into consideration whether or not there is contact between an optical probe and the surface of the inner wall portion at a time of measurement, when automatically detecting a lesion part based on tomographic information by performing OCT measurement with respect to an inner wall portion within the biliary tract, the pancreatic duct, or the like that has an epithelial layer on a surface thereof such as, for example.;SOLUTION: A scattered light intensity signal of the inner wall portin of a living organism that is acquired by OCT measurement of the biliary tract or the pancreatic duct is differentiated with respect to a depth direction (step S300), and the range of a sheath of an OCT probe (position of the outer circumferential face) is detected based on the differential signal (step S302). It is determined whether or not the sheath and the surface of the inner wall portion of the living organism are in contact, according to whether a differential signal having a large value is outside the outer circumferential face of the sheath (step S304). When automatically detecting, as a lesion part, a region at which a thickness of the epithelial layer of the inner wall portion is a value that is greater than a predetermined threshold value, the threshold value is changed in accordance with the contact region or non-contact region of the sheath (steps S306 and S308).;COPYRIGHT: (C)2012,JPO&INPIT