Patent ID: 7916837

Claim:
A method for controlling an x-ray beam generated by an x-ray source in a fluoroscope, the fluoroscope comprising an x-ray receiver disposed opposite the x-ray source, and a grid disposed between a cathode and an anode of the X-ray source, the method comprising: generating a first pulsed fluoroscopic signal having a first plurality of pulses at a first pulse rate; based on the first pulsed fluoroscopic signal, generating a second pulsed fluoroscopic signal, wherein for each of the first plurality of pulses, a second plurality of pulses is generated at a second pulse rate higher than the first pulse rate; and driving voltage of the grid using the second pulsed fluoroscopic signal, wherein the second pulsed fluoroscopic signal is communicated to the grid to cause the X-ray beam to pulse on and off in accordance with the second pulsed fluoroscopic signal during imaging.