A system and method provides a broadband network node for a best effort network such as the Internet or intranets which supports the inexpensive and rapid deployment of services to the best efforts network. A headphone set of this disclosure includes speaker units which output a sound. 2 to 250 Pa, and d) the average particle diameter of particles contained in the tofu puree of 2 to 15 m and the 90% particle diameter of the particles of 35 m or smaller. The patient positioning table is suitable for a computed tomography apparatus.