| 摘要 |
A computed radiography (CR) system (10) for imaging an object (16) is provided. The system includes a radiation source (12), a storage phosphor screen (14), an illumination source (18) and a two dimensional imager (20). The radiation source is configured to irradiate the storage phosphor screen, and the storage phosphor screen is configured to store the radiation energy. The illumination source is configured to illuminate at least a sub-area of the storage phosphor screen to stimulate emission of photons from the storage phosphor screen. The two dimensional (2D) imager is configured to capture a two dimensional image from the storage phosphor screen using the stimulated emission photons. The storage phosphor screen (14) is further configured to emit prompt emission photons upon irradiation, and the 2D imager (20) is further configured to receive the prompt emission photons from the storage phosphor screen (14). |
