Medical ultrasound apparatus; Ultrasound probe for medical use; Ultrasound diagnostic apparatus; Therapeutic ultrasound apparatus; Low-frequency medical ultrasound apparatus; Ultrasound probe for therapeutic use; Low-frequency ultrasound diagnostic apparatus; Low-frequency therapeutic ultrasound apparatus; Veterinary ultrasound diagnostic apparatus; Veterinary therapeutic ultrasound apparatus; Ultrasound transducer for medical use; veterinary ultrasound apparatus; Ultrasound probe for veterin...