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

Claim 0:
1. A diagnosis assistance device connectable to an ultrasound transducer that is positionable inside biological tissue and is axially movable along the biological tissue while radially outwardly transmitting ultrasound to determine a state of a stent, a guide wire, a vessel wall, a calcified lesion or plaque, 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 the ultrasound, for each combination of an axial movement position of the ultrasound transducer 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;
a memory connected to the control unit and configured to store the generated line data indicating the intensity value of the reflected wave from the reflection object;
the control unit being configured to extract features of the generated line data as a feature vector and compare the feature vector to an identification vector identifying the stent, the guide wire, the vessel wall, the calcified lesion or the plaque;
the control unit being configured to calculate a degree of abnormality of the feature vector as a result of the comparison of the feature vector to the identification vector:
the control unit being configured to generate a detection image that includes pixels corresponding to the generated line data, with the pixels corresponding to the line data at a common axial movement position of the ultrasound transducer being arranged in one direction, the pixels corresponding to the line data in a common transmission direction being arranged in a direction perpendicular to the one direction, and each pixel value being set according to the degree of abnormality; and
the memory being configured to store the detection image.