Publisher Correction: Direct quantitative material decomposition employing grating-based X-ray phase-contrast CT

Correction to: Scientific Reports 10.1038/s41598-018-34809-6, published online 06 November 2018

This Article contains typesetting errors.

In the Materials and Methods section, under the subheading ‘Munich Compact Light Source’,

“The spectrum at the position of the sample was measured with an energy-dispersive Amptek X-123 detector (Amptek Inc., Bedford, Massachusetts) with an 500 m Si sensor and from that a mean energy of E_mean = 24.3 keV was calculated.”

should read:

“The spectrum at the position of the sample was measured with an energy-dispersive Amptek X-123 detector (Amptek Inc., Bedford, Massachusetts) with an 500 µm Si sensor and from that a mean energy of E_mean = 24.3 keV was calculated.”

Furthermore, in the Materials and Methods section, under the subheading ‘Grating Interferometer’,

“The grating interferometer is situated at a distance of about 15 m from the X-ray source point (size: 45 × 45 m² r.m.s., divergence angle: 4 mrad).”

should read:

“The grating interferometer is situated at a distance of about 15 m from the X-ray source point (size: 45 × 45 µm² r.m.s., divergence angle: 4 mrad).”

“The Talbot interferometer is realized with a phase grating (G1) with a period of 4.92 m, duty cycle of 0.5 and a nickel filling height of 4.39 m providing a phase shift of π/2 for the design energy of 25 keV. Period, duty cycle and gold filling for the absorption grating are p₂ = 5 m, 0.5 and 70 m.”

should read:

“The Talbot interferometer is realized with a phase grating (G1) with a period of 4.92 µm, duty cycle of 0.5 and a nickel filling height of 4.39 µm providing a phase shift of π/2 for the design energy of 25 keV. Period, duty cycle and gold filling for the absorption grating are p₂ = 5 µm, 0.5 and 70 µm.”

“All tomographic images were acquired with a single photon counting Pilatus-200 K detector (DECTRIS ltd., Baden, Switzerland) with a 1 mm thick silicon sensor and an effective pixel size of p_eff = 160 m.”

should read:

“All tomographic images were acquired with a single photon counting Pilatus-200 K detector (DECTRIS ltd., Baden, Switzerland) with a 1 mm thick silicon sensor and an effective pixel size of p_eff = 160 µm.”