A joint reconstruction and lambda tomography regularization technique for energy-resolved x-ray imaging
A joint reconstruction and lambda tomography regularization technique for energy-resolved x-ray imaging
复制标题
用于能量分辨 X 射线成像的联合重建和 lambda 断层扫描正则化技术
DOI:
10.1088/1361-6420/ab8f82
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发表时间:
2020
期刊:
影响因子:
2.1
通讯作者:
Miller, Eric L
中科院分区:
文献类型:
--
作者:
W Webber, James;Quinto, Eric Todd;Miller, Eric L
We present new joint reconstruction and regularization techniques inspired by ideas in microlocal analysis and lambda tomography, for the simultaneous reconstruction of the attenuation coefficient and electron density from x-ray transmission (ie, x-ray CT) and backscattered data (assumed to be primarily Compton scattered). To demonstrate our theory and reconstruction methods, we consider the'parallel line segment'acquisition geometry of Webber J and Miller E (2020 Inverse Problems 36 025007), which is motivated by system architectures currently under development for airport security screening. We first present a novel microlocal analysis of the parallel line geometry which explains the nature of image artefacts when the attenuation coefficient and electron density are reconstructed separately. We next introduce a new joint reconstruction scheme for low effective Z (atomic number) imaging (Z< 20) characterized by a regularization strategy whose structure is derived from lambda tomography principles and motivated directly by the microlocal analytic results. Finally we show the effectiveness of our method in combating noise and image artefacts on simulated phantoms.
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影响因子:
1.9
作者:
Quinto, Eric Todd;Oktem, Ozan
通讯作者:
Oktem, Ozan
影响因子:
2.1
作者:
Borg, Leise;Frikel, Jürgen;Jørgensen, Jakob Sauer;Quinto, Eric Todd
通讯作者:
Quinto, Eric Todd
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
V. Palamodov
通讯作者:
V. Palamodov
DOI:
10.1090/s0002-9947-1980-0552261-8
发表时间:
1980
影响因子:
1.3
作者:
E. T. Quinto
通讯作者:
E. T. Quinto
DOI:
10.1137/070700863
发表时间:
2008
期刊:
SIAM J. Imaging Sci.
影响因子:
--
作者:
A. Louis
通讯作者:
A. Louis