Acoustic wave device and control method of acoustic wave device

An acoustic wave device comprising:

• an insertion object that is capable of being inserted into a subject and has a photoacoustic wave generator at a distal end portion;
• an insertion object laser light source that generates a photoacoustic wave from the photoacoustic wave generator by irradiating the photoacoustic wave generator of the insertion object with laser beam;
• an array transducer that irradiates an inside of the subject with an ultrasonic beam or laser beam, that receives an acoustic wave emitted from a tissue of the subject by irradiating the inside of the subject with the ultrasonic beam or the laser beam irradiated from the array transducer and outputs a tomographic image generating reception signal, and that receives the photoacoustic wave from the photoacoustic wave generator and outputs an insertion object image generating reception signal;
• a processor that is configured to receive the tomographic image generating reception signal and the insertion object image generating reception signal;
• and
• a display,
• wherein the processor is configured to
• generate a tomographic image signal representing a tomographic image of the subject from the tomographic image generating reception signal,
• generate an insertion object image signal representing an image of the distal end portion of the insertion object from the insertion object image generating reception signal,
• generate an insertion object display image signal having a center at a peak position where a signal strength of the insertion object image signal has a peak value, having a maximum width corresponding to a predetermined reference signal width, and having a signal strength corresponding to the peak value at the center, the insertion object display image signal having the predetermined reference signal width by changing only the insertion object image signal of the tomographic image and the insertion object image signal while a signal width of the insertion object image signal having a signal strength of a predetermined ratio to the peak value of the insertion object image signal is not equal to the predetermined reference signal width, and
• superimpose the tomographic image of the subject and the image of the distal end portion of the insertion object to be displayed on the display on the basis of the tomographic image signal and the insertion object display image signal, the image of the distal end portion of the insertion object having a display width corresponding to the predetermined reference signal width.