Patent · US Active

Phase retrieval for scanning differential phase contrast systems

US10172580B2 · kind B2 · utility

4Cited by

4References

13Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Ewald Roessl · Ellerau, DE
Hendrik Albert Pastink · Eindhoven, NL
Thomas Koehler · Norderstedt, DE
Heiner Daerr · Hamburg, DE
Udo Van Stevendaal · Ahrensburg, DE
Gerhard Martens · Henstedt-Ulzburg, DE

Key dates

Filing date	Dec 3, 2014
Grant date	Jan 8, 2019
Priority date	—
Expiry date	Jun 18, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG21K2207/005
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A phase contrast imaging apparatus (MA) and related image processing method. The imaging apparatus includes a movable arm (AR) that carries a detector (D) and one or more interferometric gratings (G0,G1,G2). The imaging apparatus includes a rigidizer (RGD) to control the rigidity of at least the arm (AR) or a mounting (GM) for the gratings (G0,G1,G2). This allows controlling a drift of a Moiré pattern as detected in a sequence of readouts. A phase of the so controlled Moiré pattern can be used to calibrate the imaging apparatus by using the image processing method.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.