Theoretically exact photoacoustic reconstruction from spatially and temporally reduced data
Theoretically exact photoacoustic reconstruction from spatially and temporally reduced data
复制标题
理论上从空间和时间上减少的数据进行精确的光声重建
DOI:
10.1088/1361-6420/aacfac
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发表时间:
2018
期刊:
影响因子:
2.1
通讯作者:
Kunyansky, L
中科院分区:
文献类型:
--
作者:
Kunyansky, L
We investigate the inverse source problem for the wave equation, arising in photo-and thermoacoustic tomography. There exist quite a few theoretically exact inversion formulas explicitly expressing the solution of this problem in terms of the measured data, under the assumption of the constant and known speed of sound. However, almost all of these formulas require data to be measured either on an unbounded surface, or on a closed surface completely surrounding the object. This is too restrictive for practical applications. The alternative approach we present, under certain restriction on geometry, yields a theoretically exact reconstruction of the standard Radon projections of the source from the data measured on a finite open surface. In addition, this technique reduces the time interval where the data should be known. In general, our method requires a pre-computation of densities of certain single-layer potentials. However, in the case of a truncated circular or spherical acquisition surface, these densities are easily obtained analytically, which leads to fully explicit asymptotically fast algorithms. We test these algorithms in a series of numerical simulations.
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DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
G. Ambartsoumian;V. Krishnan
通讯作者:
V. Krishnan
DOI:
--
发表时间:
2002
期刊:
Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology
影响因子:
--
作者:
Yuan Xu;L.V. Wang
通讯作者:
L.V. Wang
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
G. Ambartsoumian;R. Gouia;M. Lewis
通讯作者:
M. Lewis
影响因子:
3.8
作者:
Kruger, RA;Reinecke, DR;Kruger, GA
通讯作者:
Kruger, GA
影响因子:
2.1
作者:
V. Palamodov
通讯作者:
V. Palamodov