Variations in the geometrical distortion of x-ray image intensifiers

The paper investigates the variability of the geometrical deformation in digital X-ray image intensifier images as a function of acquisition parameters and time. We have increased our understanding of the deformation patterns and of how they are influenced by normal clinical use. Our goal is to reduce the frequency of calibration and the complexity of the protocol for diagnostic and interventional procedures so that geometrical distortion correction can become part of daily clinical practice.