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Large field of view grating interferometers for x-ray phase contrast imaging and ct at high energy

A technology of X-ray and interferometer, applied in the field of medical imaging

Inactive Publication Date: 2015-12-09
THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this is not possible with conventional normal incidence Talbot-Lau interferometers, since the thickness of a few-micron periodic absorption grating is technically limited to ~100 μm

Method used

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  • Large field of view grating interferometers for x-ray phase contrast imaging and ct at high energy
  • Large field of view grating interferometers for x-ray phase contrast imaging and ct at high energy
  • Large field of view grating interferometers for x-ray phase contrast imaging and ct at high energy

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Embodiment Construction

[0029] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever convenient, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0030]Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the disclosure are approximations, the numerical values ​​set forth in the specific examples are reported as precisely as possible. Any numerical values, however, inherently contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements. Moreover, all ranges disclosed herein are understood to encompass any and all subranges subsumed therein. For example, a range of "less than 10" may include any and all subranges between (and including) a minimum value of zero and a maximum value of 10, i.e., a range with a minimum value equal to or greater tha...

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Abstract

A device and method of the present disclosure provides large field-of-view Talbot-Lau phase contrast CT systems up to very high X-ray energy. The device includes microperiodic gratings tilted at glancing incidence and tiled on a single substrate to provide the large field-of-view phase contrast CT system. The present disclosure is a simple, economical, and accurate method for combining multiple GAIs into a larger FOV system, capable of performing phase-contrast tomography (PC-CT) on large objects. The device and method can be applied to medical X-ray imaging, industrial non-destructive testing, and security screening.

Description

[0001] government rights [0002] This invention was made with Government support under Grant No. 1R21EB012777-01A awarded by the National Institutes of Health (NIH), Department of Health and Human Services. The government has certain rights in this invention. [0003] Cross References to Related Applications [0004] This application is related to U.S. Patent Application Serial No. 13 / 493,392, filed January 31, 2013, entitled "Differential Phase Contrast X-ray Imaging System and Components," and to Dan Stutman and Michael Finkenthal, filed February 6, 2014, entitled "System and Method for Phase-Contrast X- 14 / 174,830, and claims priority from U.S. Provisional Patent Application entitled "High Energy X-RayPhase Contrast CT Systems Using Tiled Glancing Incidence Gratings," filed February 12, 2013, which is hereby incorporated by reference in its entirety. technical field [0005] The present disclosure relates generally to medical imaging. More specifically, the present d...

Claims

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Application Information

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IPC IPC(8): A61B6/00A61B6/03
Inventor D.斯图特曼M.芬肯萨尔
Owner THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
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