DISPOSITIF D'OBSERVATION À ULTRASONS, PROCÉDÉ DE FONCTIONNEMENT DE DISPOSITIF D'OBSERVATION À ULTRASONS, ET PROGRAMME DE FONCTIONNEMENT DE DISPOSITIF D'OBSERVATION À ULTRASONS
An ultrasound observation apparatus according to the present invention includes: a frequency analysis unit that analyzes the frequency of an ultrasound signal to calculate a plurality of frequency spectra in accordance with the reception depths and receiving directions of the ultrasound signal； a feature calculation unit that calculates a feature of each frequency spectrum； an attenuation factor setting unit that sets an attenuation factor of a computation-purpose region being a region that is different from a region of interest in an ultrasound image and is used for computation for correcting the feature； and a feature correction unit that performs attenuation correction on the feature using the attenuation factor set by the attenuation factor setting unit to calculate a corrected feature at a sampling point in the region of interest in the ultrasound image.
