Hyperspectral 2D fan-beam X-ray CT dataset of 5 materials

Hyperspectral X-ray CT dataset acquired at the DTU 3D imaging center. The phantom consists of 5 materials: Aluminium (10 mm) and PVC (7.8 mm) in solid blocks. Sugar, H2O2, and H2O in circular glass containers. 3D array with dimension: 128 x 370 x 258 < channel, angle, horizontal > Detector parameters: Number of detector pixels: 258 (concatenated from 2 detector modules with 128 pixels each and 2 pixel interpolated across a gap between detectors) Pixel size: 0.077 cm Sep=0.153 Pixels' gap length (cm) det_space=(ndet)*pixel_size+Sep # physical width of detector in cm (pixels*pixel_size), including the gap Acquisition Parameters 360 # Angular span of projections in degrees 370 # Number of projections. note: last projection taken is not a duplicate of the first projection. At angle: 360/370 degrees from first projection. 115.0 # Source-Detector distance in cm 0 # Vertical source shift from perfect placement 0 # Vertical detector shift from perfect placement 57.5 # Source-AxisOfRotation distance in cm rot_axis_x = 0 # x-position offset of AxisOfRotation rot_axis_y = 0 # y-position offset of AxisOfRotation