FIELD: medical equipment.
SUBSTANCE: invention relates to the means of X-ray differential phase-contrast imaging. In order to improve information obtained form phase-contrast images, analyzer grating (34) for X-ray differential phase-contrast imaging is supplied by absorption structure (48). Absorption structure comprises a first plurality (50) of first areas (52) with first X-ray attenuation and a second plurality (54) of second areas (56) with second X-ray attenuation. Wherein the second X-ray attenuation is smaller than the first X-ray attenuation, and the first and second areas are arranged periodically in an alternating manner. Third plurality (58) of third areas (60) is provided with a third X-ray attenuation, which lies in a range from the second X-ray attenuation to the first X-ray attenuation, wherein every second of the first or second areas is replaced by one of the third areas.
EFFECT: technical result is a quality increase of x-ray differential phase-contrast images.
11 cl, 24 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FORMATION OF DIFFERENTIAL PHASE-CONTRAST IMAGES WITH PLATES OF FOCUSING REFRACTION STRUCTURES | 2012 |
|
RU2584247C2 |
| ACHROMATIC PHASE-CONTACT IMAGE FORMING | 2010 |
|
RU2543994C2 |
| DIFFERENTIAL PHASE CONTRAST IMAGING DEVICE WITH MOVABLE GRATING(S) | 2014 |
|
RU2663176C2 |
| CALIBRATION PHANTOM OF HARDWARE FOR DIFFERENTIAL PHASE-CONTRAST VISUALIZATION | 2015 |
|
RU2681418C2 |
| MULTIDIRECTIONAL PHASE-CONTRAST X-RAY VISUALIZATION | 2013 |
|
RU2624513C2 |
| PHASE-CONTRAST IMAGING DEVICE, HAVING X-RAY DETECTOR MOVABLE ELEMENT, AND CORRESPONDING METHOD | 2010 |
|
RU2562879C2 |
| DIFFERENTIAL PHASE-CONTRAST IMAGING | 2011 |
|
RU2572644C2 |
| PHASE RETRIEVAL FOR SCANNING DIFFERENTIAL PHASE CONTRAST SYSTEMS | 2014 |
|
RU2677763C1 |
| INCLINED DIFFRACTION GRATINGS AND METHOD OF MAKING INCLINED DIFFRACTION GRATINGS | 2010 |
|
RU2544390C2 |
| IMAGE FORMING BY DIFFERENTIAL PHASE CONTRAST | 2011 |
|
RU2573114C2 |
