Phase Contrast Computed Tomography

Fu, Jian

doi:10.5772/22749

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…Over the last years, several PC-CT methods have been developed [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Most of them are based on analyzer and grating or free propagation theory [23]. The propagation-based PC-CT, called in-line PC-CT, is in many senses the simplest kind of phase contrast imaging, as no optical elements are required in the beam and the constraint on spectral width is relaxed [4,7,16,21].…”

Section: Introductionmentioning

confidence: 99%

In-line phase contrast micro-CT reconstruction for biomedical specimens

Tan

2014

Bio-Medical Materials and Engineering

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X-ray phase contrast micro computed tomography (micro-CT) can non-destructively provide the internal structure information of soft tissues and low atomic number materials. It has become an invaluable analysis tool for biomedical specimens. Here an in-line phase contrast micro-CT reconstruction technique is reported, which consists of a projection extraction method and the conventional filter back-projection (FBP) reconstruction algorithm. The projection extraction is implemented by applying the Fourier transform to the forward projections of in-line phase contrast micro-CT. This work comprises a numerical study of the method and its experimental verification using a biomedical specimen dataset measured at an X-ray tube source micro-CT setup. The numerical and experimental results demonstrate that the presented technique can improve the imaging contrast of biomedical specimens. It will be of interest for a wide range of in-line phase contrast micro-CT applications in medicine and biology.

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Section: Introductionmentioning

confidence: 99%

In-line phase contrast micro-CT reconstruction for biomedical specimens

Tan

2014

Bio-Medical Materials and Engineering

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“…Over the last years, several PC-CT methods have been developed [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. One of the recent developments is differential PC-CT (DPC-CT), which is based on a grating interferometer [8,10,11].…”

Section: Introductionmentioning

confidence: 99%

Single-slice reconstruction method for helical cone-beam differential phase-contrast CT

Chen

2014

Bio-Medical Materials and Engineering

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X-ray phase-contrast computed tomography (PC-CT) can provide the internal structure information of biomedical specimens with high-quality cross-section images and has become an invaluable analysis tool. Here a simple and fast reconstruction algorithm is reported for helical cone-beam differential PC-CT (DPC-CT), which is called the DPC-CB-SSRB algorithm. It combines the existing CB-SSRB method of helical cone-beam absorption-contrast CT with the differential nature of DPC imaging. The reconstruction can be performed using 2D fan-beam filtered back projection algorithm with the Hilbert imaginary filter. The quality of the results for large helical pitches is surprisingly good. In particular, with this algorithm comparable quality is obtained using helical cone-beam DPC-CT data with a normalized pitch of 10 to that obtained using the traditional inter-row interpolation reconstruction with a normalized pitch of 2. This method will push the future medical helical cone-beam DPC-CT imaging applications. Bio-Medical Materials and Engineering 24 (2014) 45-51 45J. Fu and L. Chen / Single-slice reconstruction method for helical cone-beam differential phase-contrast CT 48 J. Fu and L. Chen / Single-slice reconstruction method for helical cone-beam differential phase-contrast CT 50

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