Abstract: Provided is a 4th generation linear-focused-type high-intensity focused ultrasound system using 4th generation linear-focused-type high-intensity focused ultrasound (HIFU) in which an element array plate is formed in two stages and may be selectively used depending on a specific part of the human body. When the system is used for a deep area or a thin area depending on a specific part of the human body, a first stage and a second stage are selectively used, or the first stage and the second stage are used at the same time for intensive irradiation.

Abstract: Provided is a 3D bone density and bone age calculation apparatus using an artificial intelligence-based rotation manner. The 3D bone density and bone age calculation apparatus includes a main body, and the main body includes a rotary drum including a drum shaft gear, an X-ray generator, an intensifying screen, and an image data capturer, a drum driver including a motor shaft gear connected to the drum shaft gear so as to rotate the rotary drum, a motor, support rollers and one of an origin sensor and an encoder, an outer case and an inner case, a front case and a rear case, a capturing holder, and a controller configured to select an image-captured position of the rotary drum, and configured to input a current age, sex and nutritional status of a patient, etc. The controller includes a display configured to display captured images and a diagram indicating bone age.