Arterial contour detectability in head CT angiography
Arterial contour extraction is essential for visualization and analysis of vasculature in CT angiography (CTA). A means for evaluating the detectability of artery contours CTA images is required. We developed and tested a new method for this purpose based on phase information from two-dimensional Fourier transforms of CTA images. The relationship between arterial contour detectability and a patients ocular lens dose was evaluated in CTA images obtained with various tube voltages and currents.
arterial contour detectability ct angiography phase information fourier transform