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

Claim 16:
17. A diagnosis assistance method comprising:
radially transmitting ultrasound from an ultrasound transducer while the ultrasound transducer is moving inside a biological tissue in which a stent, a guide wire, a vessel wall, a calcified lesion or plaque is located;
generating line data indicating an intensity value of a reflected wave from a reflection object, which is present in a transmission direction of the ultrasound, for each combination of a movement position of the ultrasound transducer and the transmission direction of the ultrasound with reference to an observation result of a cross section of the biological tissue by the ultrasound transducer;
extracting features of the generated line data as a feature vector and comparing the feature vector to an identification vector identifying the stent, the guide wire, the vessel wall, the calcified lesion or the plaque;
calculating a degree of abnormality of the feature vector as a result of the comparison of the feature vector to the identification vector; and
generating a detection image that includes pixels corresponding to the generated line data and in which the pixels corresponding to the line data at the same movement position are arranged in one direction, the pixels corresponding to the line data in the same transmission direction are arranged in a direction perpendicular to the one direction, and each pixel value is set according to the degree of abnormality of the feature vector.