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Computed Tomography01:10

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    This study enhances acoustic computed tomography (CT) for temperature field reconstruction by optimizing transducer layouts. A circular arrangement with hexagonal grids and specific transducer placement significantly improves reconstruction accuracy.

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    Area of Science:

    • * Acoustics
    • * Tomography
    • * Heat Transfer

    Background:

    • * Acoustic computed tomography (CT) systems require optimized transducer configurations for accurate temperature field reconstruction.
    • * Existing transducer layouts may limit the system's ability to reconstruct diverse temperature distributions effectively.

    Purpose of the Study:

    • * To investigate and compare square and circular transducer layouts for acoustic CT temperature field reconstruction.
    • * To develop theoretical frameworks and evaluation metrics for assessing transducer arrangements.
    • * To identify optimal configurations for improved reconstruction quality and accuracy.

    Main Methods:

    • * Simulation and reconstruction of four distinct temperature field models using square and circular transducer layouts.
    • * Application of coefficient matrix theory and proposed indexes for layout evaluation.
    • * Comparative analysis of regular hexagonal versus equal-area grid divisions in circular layouts.

    Main Results:

    • * Optimized transducer positioning in square layouts enhances reconstruction quality.
    • * Regular hexagonal grid division outperforms equal-area division in circular layouts.
    • * A circular layout with nine transducers, 27 acoustic rays, and 91 hexagonal grids yielded superior results (error ≤ 5.07%) compared to eight-transducer configurations.

    Conclusions:

    • * Transducer layout significantly impacts acoustic CT temperature reconstruction accuracy.
    • * Circular layouts with regular hexagonal grids offer advantages for temperature field reconstruction.
    • * The proposed methods and identified optimal configurations provide a basis for improving acoustic CT system performance.