CT ERF Phantom HIT

A phantom designed for physical evaluation of iteratively reconstructed images under low CNR. The phantom is designed to physically and quantitatively evaluate iteratively reconstructed images in the low CNR area, such as the abdomen, where MTF of PSF is less useful comparing to high CNR area. The phantom requires edge spread function (ESF) to calculate MTF of the low CNR images, which facilitate assessing performance properties of iteratively reconstructed images under low CNR.