An ultrasonic apparatus comprising: an ultrasonic transducer ; a driving circuit configured to cause the ultrasonic transducer to transmit sonic waves; a receiving circuit configured to receive sonic waves received by the ultrasonic transducer ; a frequency detecting unit configured to detect a resonant frequency of the ultrasonic transducer ; a first storage unit configured to store first premeasured data that is measured when the ultrasonic transducer is in a factory default state known to have no anomaly, said first premeasured data including one or more resonant frequencies of the ultrasonic transducer at one or more predetermined temperatures; a Q-factor detecting unit configured to detect a Q factor of the ultrasonic transducer ; a second storage unit configured to store second premeasured data that is measured when the ultrasonic transducer is in a factory default state known to have no anomaly, said second premeasured data including one or more Q factors of the ultrasonic transducer at the one or more predetermined temperatures; a temperature detecting unit ; a resonance frequency estimating unit configured to estimate a resonance frequency of the ultrasonic transducer at the temperature detected by the temperature detecting unit , on the basis of the stored first premeasured data; a Q factor estimating unit configured to estimate a Q factor of the ultrasonic transducer at the temperature detected by the temperature detecting unit , on the basis of the stored second premeasured data; and a determining unit configured to determine an anomaly of the ultrasonic transducer on the basis of the resonant frequency estimated by the resonant frequency estimating unit and the Q factor estimated by the Q factor estimating unit , the resonant frequency detected by the frequency detecting unit and the Q factor detected by the Q-factor detecting unit . an ultrasonic transducer ; a driving circuit configured to cause the ultrasonic transducer to transmit sonic waves; a receiving circuit configured to receive sonic waves received by the ultrasonic transducer ; a frequency detecting unit configured to detect a resonant frequency of the ultrasonic transducer ; a first storage unit configured to store first premeasured data that is measured when the ultrasonic transducer is in a factory default state known to have no anomaly, said first premeasured data including one or more resonant frequencies of the ultrasonic transducer at one or more predetermined temperatures; a Q-factor detecting unit configured to detect a Q factor of the ultrasonic transducer ; a second storage unit configured to store second premeasured data that is measured when the ultrasonic transducer is in a factory default state known to have no anomaly, said second premeasured data including one or more Q factors of the ultrasonic transducer at the one or more predetermined temperatures; a temperature detecting unit ; a resonance frequency estimating unit configured to estimate a resonance frequency of the ultrasonic transducer at the temperature detected by the temperature detecting unit , on the basis of the stored first premeasured data; a Q factor estimating unit configured to estimate a Q factor of the ultrasonic transducer at the temperature detected by the temperature detecting unit , on the basis of the stored second premeasured data; and a determining unit configured to determine an anomaly of the ultrasonic transducer on the basis of the resonant frequency estimated by the resonant frequency estimating unit and the Q factor estimated by the Q factor estimating unit , the resonant frequency detected by the frequency detecting unit and the Q factor detected by the Q-factor detecting unit . <EOS>