High-speed image recording apparatus for energy subtraction processing

A high-speed image recording apparatus for energy subtraction processing, which comprises:

• (i) sheet change means for removing a stimulable phosphor sheet positioned at a predetermined image recording position from said image recording position and loading a different stimulable phosphor sheet to said image recording position;
• (ii) a radiation source for emitting a radiation to said stimulable phosphor sheet positioned at said image recording position;
• (iii) radiation source drive controlling means for controlling drive of said radiation source;
• (iv) filter change-over means for changing over a different radiation filter on a radiation passage between said radiation source and said stimulable phosphor sheet at each image recording step, and
• (v) a controller for sending signals to said sheet change means, said filter change-over means and said radiation source drive controlling means for loading said stimulable phosphor sheet to said image recording position by said sheet change means, changing over said radiation filter by said filter change-over means, and then driving said radiation source by said radiation source drive controlling means to emit said radiation, wherein said controller sends a signal to said radiation source drive controlling means in synchronization with consecutive heartbeats of an object.