A kinestatic charge detector for intravenous coronary angiography using synchrotron radiation X-rays

A kinestatic charge detector is proposed for improving the efficiency of X-ray flux utilization for intravenous coronary angiography at the National Synchrotron Light Source at Brookhaven National Laboratory. At the desired spatial resolution of 0.25 mm, the use of a kinestatic charge detector to replace the one-dimensional Si(Li) detector used in the earlier studies will lead to an increase in the utilized X-ray flux of at least a factor of eight while maintaining the same patient scanning speed of 12 cm/s. This improvement will result from the possibility of using at least 2 mm of the beam height available at both X-ray energies from the existing dual-energy X-ray monochromator, rather than requiring that the beam be collimated to a 0.25-mm height as required by a one-dimensional detector