Patent ID: 11957509
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 2:
3. A diagnosis assistance device operatively connectable to an ultrasound transducer that is movably positionable inside biological tissue to determine a state of a stent or a guide wire, the diagnosis assistance device comprising:
a control unit configured to generate line data indicating an intensity value of a reflected wave from a reflection object, which is present in a transmission direction of ultrasound, for each combination of a movement position of the ultrasound transducer that radially transmits the ultrasound while being moved inside the biological tissue and a transmission direction of the ultrasound with reference to an observation result of a cross section of the biological tissue by the ultrasound transducer and to generate a detection image which includes pixels corresponding to the generated line data and in which the pixels corresponding to the line data at a same movement position are arranged in one direction, the pixels corresponding to the line data in a same transmission direction being arranged in a direction perpendicular to the one direction, and each pixel value being set according to a degree of abnormality of the generated line data; and
the control unit being configured to calculate the degree of abnormality by comparing a feature vector, obtained by extracting features of the generated line data, to an identification vector identifying the stent or guide wire, and the degree of abnormality of the feature vector being a similarity between the feature vector and the identification vector.