Optimization of the image acquisition procedure in low-field MRI for non- destructive analysis of loin using predictive models

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  • Daniel Caballero
  • Trinidad Pérez-Palacios
  • Andrés Caro
  • Mar Ávila
  • Teresa Antequera

The use of low-field magnetic resonance imaging (LF-MRI) scanners has increased in recent years. The low economic cost in comparison to high-field (HF-MRI) scanners and the ease of maintenance make this type of scanner the best choice for nonmedical purposes. However, LF-MRI scanners produce low-quality images, which encourages the identification of optimization procedures to generate the best possible images. In this paper, optimization of the image acquisition procedure for an LF-MRI scanner is presented, and predictive models are developed. The MRI acquisition procedure was optimized to determine the physicochemical characteristics of pork loin in a nondestructive way using MRI, feature extraction algorithms and data processing methods. The most critical parameters (relaxation times, repetition time, and echo time) of the LF-MRI scanner were optimized, presenting a procedure that could be easily reproduced in other environments or for other purposes. In addition, two feature extraction algorithms (gray level co-occurrence matrix (GLCM) and one point fractal texture algorithm (OPFTA)) were evaluated. The optimization procedure was validated by using several evaluation metrics, achieving reliable and accurate results (r >0:85; weighted absolute percentage error (WAPE) lower than 0.1%; root mean square error of prediction (RMSEP) lower than 0.1%; true standard deviation (TSTD) lower than 2; and mean absolute error (MAE) lower than 2). These results support the high degree of feasibility and accuracy of the optimized procedure of LF-MRI acquisition. No other papers present a procedure to optimize the image acquisition process in LF-MRI. Eventually, the optimization procedure could be applied to other LF-MRI systems.

OriginalsprogEngelsk
Artikelnummere583
TidsskriftPeerJ Computer Science
Vol/bind7
Antal sider26
DOI
StatusUdgivet - 2021

Bibliografisk note

Funding Information:
This work is financed by the Consejería de Educación y Empleo, Junta de Extremadura, Spain and the European Union (ERDF funds) through the support funds to research groups GRU18138 and IB16089 project. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Funding Information:
The following grant information was disclosed by the authors: Consejería de Educación y Empleo, Junta de Extremadura, Spain and the European Union (ERDF funds). Junta de Extremadura, Spain and the European Union (ERDF funds).

Publisher Copyright:
Copyright 2021 Caballero et al.

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