Title:
PHASE IMAGE CAPTURING METHOD AND PHASE IMAGE CAPTURING DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/240165
Kind Code:
A1
Abstract:
[Problem] To provide a phase image capturing method and device with which the phase of a subject can be acquired with high spatial resolution by being captured at least once, without requiring an improvement of an existing device. [Solution] This phase image capturing method involves emitting quantum beams from a beam source onto a detector via a subject and at least one sheet of a phase lattice, and obtaining a phase image of the subject from the intensity distributions of the beams at respective pixels constituting the detector. The intensity distributions of the beams include information about absorbance (a0), visibility (V), and phase (φ), and the absorbance (a0), visibility (V), and phase (φ) are obtained from at least one measurement image by assuming that the absorbance (a0), visibility (V), and phase (φ) of at least three adjacent pixels are almost the same on the basis of variable approximation of the image.
Inventors:
KUDO HIROYUKI (JP)
LIAN SONGZHE (JP)
LIAN SONGZHE (JP)
Application Number:
PCT/JP2019/023266
Publication Date:
December 19, 2019
Filing Date:
June 12, 2019
Export Citation:
Assignee:
UNIV TSUKUBA (JP)
International Classes:
G01N23/041; A61B6/00
Domestic Patent References:
| WO2017013153A1 | 2017-01-26 | |||
| WO2004058070A1 | 2004-07-15 | |||
| WO2010050483A1 | 2010-05-06 |
Foreign References:
| JP2012016370A | 2012-01-26 | |||
| JP2012143491A | 2012-08-02 | |||
| JP2016214615A | 2016-12-22 | |||
| JP2016000139A | 2016-01-07 | |||
| JP2014117336A | 2014-06-30 | |||
| JP2012507690A | 2012-03-29 | |||
| US20140169524A1 | 2014-06-19 | |||
| JP2002026300A | 2002-01-25 |
Other References:
SATOSHI RENMATSU; HIROYUKI KUDO: "Phase measurement method without fringe scanning", PREPRINTS OF CONFERENCE OF THE JAPANESE SOCIETY OF MEDICAL IMAGING TECHNOLOGY, vol. 37, 25 July 2018 (2018-07-25), pages 210 - 213, XP009524328
A. BRAVINP. COANP. SUORTTI: "X-ray phase-contrast imaging: from pre-clinical applications towards clinics", PHYS. MED. BIOL., vol. 58, 2013, pages R1
F. PFEIFFERC. GRUNZWEIGO. BUNKG. FREIE. LEHMANNC. DAVID: "Neutron Phase Imaging and Tomography", PHYS. REV. LETT., vol. 96, 2 June 2006 (2006-06-02), pages 215505
ERRATUM PHYS. REV. LETT., vol. 97, no. 0, 2006, pages 69905
A. MOMOSES. KAWAMOTOI. KOYAMAY. HAMAISHIK. TAKAIY. SUZUKI: "Demonstration of X-Ray Talbot interferometry", JPN. J. APPL. PHYS., vol. 42, 2003, pages L866 - L868
T. WEITKAMPA. DIAZC. DAVIDF. PFEIFFERM. STAMPANONIP. CLOETENSE. ZIEGLER: "X-ray phase imaging with a grating interferometer", OPT. EXPRESS, vol. 12, no. 16, 2005, pages 6296 - 6304
M. TAKEDAH. INAS. KOBAYASHI: "Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry", J. OPT. SOC. AM., vol. 72, 1982, pages 156 - 160
Y. GEK. LIJ. GARRETTG. H. CHEN: "Grating based X-ray differential phase contrast imaging without mechanical phase stepping", OPT. EXPRESS, vol. 22, 2014, pages 14246 - 14252
C. KOTTLERF. PFEIFFERO. BUNKC. GR**UNZWEIGC. DAVID: "Grating interferometer based scanning setup for hard X-ray phase contrast imaging", REV. SCI. INSTRUM., vol. 78, 2007, pages 043710
C. ARBOLEDAZ. WANG ZM. STAMPANONI: "Tilted-grating approach for scanning-mode X-ray phase contrast imaging", OPT. EXPRESS, vol. 22, no. 13, 2014, pages 15447 - 15458, XP055190497, DOI: 10.1364/OE.22.015447
A. BRAVINP. COANP. SUORTTI: "X-ray phase-contrast imaging: from pre-clinical applications towards clinics", PHYS. MED. BIOL., vol. 58, 2013, pages R1
F. PFEIFFERC. GRUNZWEIGO. BUNKG. FREIE. LEHMANNC. DAVID: "Neutron Phase Imaging and Tomography", PHYS. REV. LETT., vol. 96, 2 June 2006 (2006-06-02), pages 215505
ERRATUM PHYS. REV. LETT., vol. 97, no. 0, 2006, pages 69905
A. MOMOSES. KAWAMOTOI. KOYAMAY. HAMAISHIK. TAKAIY. SUZUKI: "Demonstration of X-Ray Talbot interferometry", JPN. J. APPL. PHYS., vol. 42, 2003, pages L866 - L868
T. WEITKAMPA. DIAZC. DAVIDF. PFEIFFERM. STAMPANONIP. CLOETENSE. ZIEGLER: "X-ray phase imaging with a grating interferometer", OPT. EXPRESS, vol. 12, no. 16, 2005, pages 6296 - 6304
M. TAKEDAH. INAS. KOBAYASHI: "Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry", J. OPT. SOC. AM., vol. 72, 1982, pages 156 - 160
Y. GEK. LIJ. GARRETTG. H. CHEN: "Grating based X-ray differential phase contrast imaging without mechanical phase stepping", OPT. EXPRESS, vol. 22, 2014, pages 14246 - 14252
C. KOTTLERF. PFEIFFERO. BUNKC. GR**UNZWEIGC. DAVID: "Grating interferometer based scanning setup for hard X-ray phase contrast imaging", REV. SCI. INSTRUM., vol. 78, 2007, pages 043710
C. ARBOLEDAZ. WANG ZM. STAMPANONI: "Tilted-grating approach for scanning-mode X-ray phase contrast imaging", OPT. EXPRESS, vol. 22, no. 13, 2014, pages 15447 - 15458, XP055190497, DOI: 10.1364/OE.22.015447
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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