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Dual modality electrical impedance and ultrasound reflection tomography to improve image quality

INFORMAZIONI SU QUESTO ARTICOLO

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Figure 1

The phantom uses distilled water as medium and (a) insulator, (b) conductor, and (c) insulator-conductor
The phantom uses distilled water as medium and (a) insulator, (b) conductor, and (c) insulator-conductor

Figure 2

Data acquisition of electrical impedance tomography
Data acquisition of electrical impedance tomography

Figure 3

The uniform element model with 141 nodes, 248 elements and 16 electrodes channels
The uniform element model with 141 nodes, 248 elements and 16 electrodes channels

Figure 4

Non-uniform element model with (a) 166 nodes and 298 elements, (b) 179 nodes and 324 elements, and (c) 201 nodes and 368 elements
Non-uniform element model with (a) 166 nodes and 298 elements, (b) 179 nodes and 324 elements, and (c) 201 nodes and 368 elements

Figure 5

Experiments configuration of ultrasound reflection tomography
Experiments configuration of ultrasound reflection tomography

Figure 6

Pattern of data collection
Pattern of data collection

Figure 7

Electrical potential data of experiment scanning on neighboring data collection
Electrical potential data of experiment scanning on neighboring data collection

Figure 8

Reconstruction images of ultrasound reflection. (a) Rubber cylinder in the left side, (b) Aluminium cylinder in the right side, and (c) Rubber and Aluminium cylinder in the left and right side.
Reconstruction images of ultrasound reflection. (a) Rubber cylinder in the left side, (b) Aluminium cylinder in the right side, and (c) Rubber and Aluminium cylinder in the left and right side.

Figure 9

Reconstruction image of the relative method in uniform elements model
Reconstruction image of the relative method in uniform elements model

Figure 10

Reconstruction image of the relative method in non-uniform elements model
Reconstruction image of the relative method in non-uniform elements model

Figure 11

The line profiles of the reconstruction image from uniform and non-uniform elements compared to reference. (a) Insulator, (b) conductor, and (c) insulator-conductor
The line profiles of the reconstruction image from uniform and non-uniform elements compared to reference. (a) Insulator, (b) conductor, and (c) insulator-conductor

Figure 12

Reconstruction image of the Newton-Raphson method in uniform elements model
Reconstruction image of the Newton-Raphson method in uniform elements model

Figure 13

Reconstruction image of the Newton-Raphson method in non-uniform elements model
Reconstruction image of the Newton-Raphson method in non-uniform elements model

Figure 14

Objective function from iteration process of neighboring collection methods with anomaly objects. (a) Insulator, (b) conductor, and (c) insulator-conductor
Objective function from iteration process of neighboring collection methods with anomaly objects. (a) Insulator, (b) conductor, and (c) insulator-conductor

Figure 15

Line profile of reconstruction images from the Newton-Raphson methods of uniform and non-uniform elements compared to reference. (a) Insulator object, (b) conductor object, and (c) insulator-conductor object
Line profile of reconstruction images from the Newton-Raphson methods of uniform and non-uniform elements compared to reference. (a) Insulator object, (b) conductor object, and (c) insulator-conductor object

Error analysis on spatial resolution of linear and Newton-Raphson reconstruction methods using insulator, conductor or a combination

ElementsLinear reconstr. methodsNewton-Raphson reconstr. methods
Insu.Cond.Insu-CondInsu.Cond.Insu-Cond
Uniform3.54.64.43.36.31.3
Non uniform3.13.93.70.222.61.1