Ultrasound observation device, processing device, method of operating ultrasound observation device, and computer readable recording medium

A method of operating a processing device, comprising:

• generating an ultrasound image based on an ultrasound signal acquired by an ultrasound probe, the ultrasound probe being configured to transmit an ultrasonic wave to a subject that is an observation target and receive an ultrasonic wave reflected by the subject;
• generating a rotation amount including a rotation direction and rotation angle of a display area of the ultrasound image displayed on a display unit in response to a command position with respect to the first ultrasound image displayed on the display unit;
• rotate the ultrasound image by the rotation amount;
• generating a character image indicating a position corresponding to the command position in the rotated ultrasound image;
• and
• displaying the rotated ultrasound image on the display unit and superimposing the character image at the position corresponding to the command position on the rotated ultrasound image displayed on the display unit.

A non-transitory computer-readable recording medium on which an executable program is recorded, the program instructing a processor to execute:

• generating an ultrasound image based on an ultrasound signal acquired by an ultrasound probe, the ultrasound probe being configured to transmit an ultrasonic wave to a subject that is an observation target and receive an ultrasonic wave reflected by the subject;
• generating a rotation amount including a rotation direction and rotation direction of a display area of the ultrasound image displayed on a display unit in response to a command position with respect to the ultrasound image displayed on the display unit;
• rotating the ultrasound image by the rotation amount;
• generating a character image indicating a position corresponding to the command position in the rotated ultrasound image;
• and
• displaying the rotated ultrasound image on the display unit and superimposing the character image at the position corresponding to the command position on the rotated ultrasound image displayed on the display unit.