Junyue Wang et al 2006 Phys. Med. Biol. 51 3391 doi:10.1088/0031-9155/51/14/007
Junyue Wang1,2, Peiping Zhu1, Qingxi Yuan1, Wanxia Huang1, Hang Shu1,2, Bo Chen4, Tiandou Hu1 and Ziyu Wu1,3
Show affiliationsThe computed tomography technique cannot easily be extended to diffraction enhanced imaging (DEI) because, while from DEI we may extract the refractive index gradient in one dimension, from the conventional CT reconstruction algorithm we may reconstruct only a scalar quantity. However, recently we showed that changing the direction of the scan axis, and collecting a set of data related to the three-dimensional distribution of the refractive index gradient of the sample, a CT image was obtained. The algorithm we used is based on the conventional CT algorithm but with a specific pre-processing of the projection data. The mathematical framework of the procedure and a simple CT experiment are presented and discussed.
Issue 14 (21 July 2006)
Received 22 March 2006, in final form 11 May 2006
Published 23 June 2006
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