Standard Test Method for Measurement of Computed Tomography (CT) System Performance

Published by	Publication Date	Number of Pages
ASTM	06/01/2020	13

Category: ASTM

Description

ASTM E1695 – Standard Test Method for Measurement of Computed Tomography (CT) System Performance

1.1”This test method provides instruction for determining the spatial resolution and contrast sensitivity in X-ray and ”-ray computed tomography (CT) volumes. The determination is based on examination of the CT volume of a uniform cylinder of material. The spatial resolution measurement (Modulation Transfer Function) is derived from an image analysis of the sharpness at the edges of the reconstructed cylinder slices. The contrast sensitivity measurement (Contrast Discrimination Function) is derived from an image analysis of the contrast and the statistical noise at the center of the cylinder slices.