Helical x-ray differential phase contrast computed tomography

Zhihua Qi; Pascal Thériault-Lauzier; Nicholas Bevins; Joseph Zambelli; Ke Li; Guang-Hong Chen

doi:10.1117/12.878494

16 March 2011 Helical x-ray differential phase contrast computed tomography

Zhihua Qi, Pascal Thériault-Lauzier, Nicholas Bevins, Joseph Zambelli, Ke Li, Guang-Hong Chen

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 79611Q (2011) https://doi.org/10.1117/12.878494
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

Helical computed tomography revolutionized the field of x-ray computed tomography two decades ago. The simultaneous translation of an image object with a standard computed tomography acquisition allows for fast volumetric scan for long image objects. X-ray phase sensitive imaging methods have been studied over the past few decades to provide new contrast mechanisms for imaging an object. A Talbot-Lau grating interferometer based differential phase contrast imaging method has recently demonstrated its potential for implementation in clinical and industrial applications. In this work, the principles of helical computed tomography are extended to differential phase contrast imaging to produce volumetric reconstructions based on fan-beam data. The method demonstrates the potential for helical differential phase contrast CT to scan long objects with relatively small detector coverage in the axial direction.

Citation Download Citation

Zhihua Qi, Pascal Thériault-Lauzier, Nicholas Bevins, Joseph Zambelli, Ke Li, and Guang-Hong Chen "Helical x-ray differential phase contrast computed tomography", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79611Q (16 March 2011); https://doi.org/10.1117/12.878494

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