PROBLEM TO BE SOLVED: To provide an ultrasonic observation device that allows a user to visually recognize a temporal change in an attenuation rate in an ultrasonic image.SOLUTION: An ultrasonic observation device 1 includes: a frequency analysis part 332 for calculating a plurality of frequency spectra by analyzing a frequency of an ultrasonic signal a feature amount calculation part 333 for calculating respective feature amounts of the plurality of frequency spectra an attenuation rate setting part 334 for setting an attenuation rate in a region of interest of the ultrasonic image a feature amount correction part 335 for calculating a corrected feature amount in the region of interest of the ultrasonic image by performing attenuation correction of the feature amount using the attenuation rate set by the attenuation rate setting part 334 a representative attenuation rate calculation part 336 for calculating a representative attenuation rate of the region of interest defined based on the attenuation rate an attenuation rate graph generation part 343 for generating an attenuation rate graph indicating a temporal change in the representative attenuation rate and a display control part 361 for executing control to cause a display device to display the corrected feature amount and the attenuation rate grasp in association with each other.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】ユーザが超音波画像における減衰率の時間変化を視覚的に認識することを可能にする超音波観測装置、を提供する。【解決手段】超音波観測装置1は、超音波信号の周波数を解析することによって複数の周波数スペクトルを算出する周波数解析部332と、複数の周波数スペクトルの特徴量をそれぞれ算出する特徴量算出部333と、超音波画像の関心領域において減衰率を設定する減衰率設定部334と、減衰率設定部334が設定した減衰率を用いて特徴量の減衰補正を行うことによって、超音波画像の関心領域における補正特徴量を算出する特徴量補正部335と、減衰率に基づいて定義される関心領域の代表減衰率を算出する代表減衰率算出部336と、代表減衰率の時間変化を示す減衰率グラフを生成する減衰率グラフ生成部343と、補正特徴量および減衰率グラフを関連付けて表示装置に表示させる制御を行う表示制御部361と、を備える。【選択図】図1
