Influence of the multi-resolution technique on tomographic reconstruction in ultrasound tomography

被引:2
|
作者
Luong Thi Theu [1 ]
Quang-Huy Tran [2 ]
Solanki, Vijender Kumar [3 ]
Shemeleva, Tatiana R. [4 ]
Duc-Tan Tran [5 ]
机构
[1] Thu Dau Mot Univ, Inst Appl Technol, Thu Dau Mot, Vietnam
[2] Hanoi Pedag Univ 2, Fac Phys, Hanoi, Vietnam
[3] CMR Inst Technol Autonomous, Comp Sci & Engn, Hyderabad, India
[4] State Univ Intelligent Technol & Telecommun, Odessa, Ukraine
[5] Phenikaa Univ, Fac Elect & Elect Engn, Hanoi 12116, Vietnam
关键词
Ultrasound tomography; distorted born iterative method; reconstruction; multi-resolution (MR); INVERSE SCATTERING; BORN;
D O I
10.1080/17445760.2021.1967350
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
The greatest advantage of scattering theory-based ultrasound tomography (UT) is its ability to investigate small structures. DBIM is the Distorted Born Iterative Method. The nearest neighbour interpolation method is used to enhance the reconstruction performance and reduce the reconstruction time. The raw (N-1 x N-1) and dense (N-2 x N-2) meshed integration areas are reconstructed in N-N1 and N-N2 iterations, respectively. However, choosing the best value of N-N1 to get the highest performance was not mentioned in previous works. If it is not well chosen, the reconstruction quality is even worse than that when using no interpolation. This study proposes a method to enhance the UT reconstruction by using the nearest neighbour interpolation (MR-DBIM). The corresponding algorithms are specified by the graphical concurrent programming language of Sleptsov nets. Some significant results are (1) the MR-DBIM is only meaningful when r < 1 (i.e. sparse scattering domain); (2) the best performance is obtained in the DBIM when N-t = N-r, but in the MR-DBIM when N-r = 2N(t); (3) the well-investigated value of N-N1 is 2 when 0.5 < r < 1 and is 3 when 0.2 < r < 0.5. [GRAPHICS] .
引用
收藏
页码:579 / 593
页数:15
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