mcr-6000 mammography system is mainly used to acquire x-ray images of human breasts for clinical diagnosis. it is a film-based mammography system and proves to be an effective solution for breast diseases. mcr-6000 mammography system consists of the main body unit and the control console (see the picture of the system), including the key components of dual-focus x-ray tube, collimator, rotating anode starter and protection system, high-frequency and high voltage generator (frequency: 40khz), tube filament heating system, breast compression device, supporting arm and other mechanical and electric devices. x-ray tube is one of the major components which decide the breast image quality. mcr-6000 system uses a high power rotating anode of dual-focus tube with mo target and be window (bias dual-focus: 0.1mm/0.3mm) to ensure the clear images. the carbon-based bucky features high transmission rate, and high efficiency in blocking the scattered x-ray, which is also helpful for improving image quality. the automatic exposure control system is highly sensitive and quickly reactive, so the exposure is automatically adjusted according to the factures of age and thickness etc.