PROBLEM TO BE SOLVED: To provide a medical diagnostic apparatus capable of suppressing influence of temperature fluctuation to a biological information signal even when the temperature around a receiving circuit is fluctuated, and obtaining accurate diagnostic information.SOLUTION: A receiving signal is obtained for each of predetermined obtained intervals using an array transducer (S1), temperature fluctuation is calculated based on temperature information around a receiving circuit obtained at a predetermined interval by a temperature sensor (S2), a sound ray signal generated in the receiving circuit is corrected based on a value of the temperature fluctuation and a peculiar correction coefficient of an ultrasonic probe and an obtained interval of the receiving signal (S4) when the temperature fluctuation around the receiving circuit is not below the predetermined value (S3), and an ultrasonic image is generated base on the corrected sound ray signal (S5).COPYRIGHT: (C)2013,JPO&INPIT【課題】受信回路周辺の温度が変動した場合でも、生体情報信号に対する温度変動の影響を抑制して精度の高い診断情報を取得することができる医療診断装置を提供する。【解決手段】アレイトランスデューサを用いて所定の取得間隔ごとに受信信号を取得し(S1)、温度センサにより所定間隔で取得された受信回路周辺の温度情報に基づいて温度変動を算出し(S2)、受信回路周辺の温度変動が所定値以下でない場合に(S3)、受信回路で生成された音線信号を温度変動の値、超音波プローブ固有の補正係数および受信信号の取得間隔に基づいて補正し(S4)、補正された音線信号に基づいて超音波画像を生成する(S5)。【選択図】図5
