Department of Electronics and Communication Engineering, Pondicherry Engineering College, Puducherry, India.
SRM Easwari Engineering College, Ramavaram, India.
Curr Med Imaging. 2021;17(8):943-955. doi: 10.2174/1573405616666210105125542.
Magnetic Resonance Imaging (MRI) plays an important role in the field of medical diagnostic imaging as it poses non-invasive acquisition and high soft-tissue contrast. However, a huge time is needed for the MRI scanning process that results in motion artifacts, degrades image quality, misinterprets the data, and may cause discomfort to the patient. Thus, the main goal of MRI research is to accelerate data acquisition processing without affecting the quality of the image.
This paper presents a survey based on distinct conventional MRI reconstruction methodologies. In addition, a novel MRI reconstruction strategy is proposed based on weighted Compressive Sensing (CS), Penalty-aided minimization function, and Meta-heuristic optimization technique.
An illustrative analysis is done concerning adapted methods, datasets used, execution tools, performance measures, and values of evaluation metrics. Moreover, the issues of existing methods and the research gaps considering conventional MRI reconstruction schemes are elaborated to obtain improved contribution for devising significant MRI reconstruction techniques.
The proposed method will reduce conventional aliasing artifact problems, may attain lower Mean Square Error (MSE), higher Peak Signal-to-Noise Ratio (PSNR), and Structural SIMilarity (SSIM) index.
The issues of existing methods and the research gaps considering conventional MRI reconstruction schemes are elaborated to devising an improved significant MRI reconstruction technique.
磁共振成像(MRI)在医学诊断成像领域发挥着重要作用,因为它具有非侵入性采集和高软组织对比度的特点。然而,MRI 扫描过程需要大量时间,这会导致运动伪影、降低图像质量、误读数据,并可能使患者感到不适。因此,MRI 研究的主要目标是在不影响图像质量的情况下加速数据采集处理。
本文基于不同的传统 MRI 重建方法进行了调查。此外,还提出了一种基于加权压缩感知(CS)、惩罚辅助最小化函数和启发式优化技术的新型 MRI 重建策略。
对适应方法、使用的数据集、执行工具、性能指标和评估指标值进行了说明性分析。此外,阐述了现有方法存在的问题和传统 MRI 重建方案的研究空白,以获得对设计重要 MRI 重建技术的改进贡献。
所提出的方法将减少传统的混叠伪影问题,可能获得更低的均方误差(MSE)、更高的峰值信噪比(PSNR)和结构相似性(SSIM)指数。
阐述了现有方法存在的问题和传统 MRI 重建方案的研究空白,以设计出一种改进的重要 MRI 重建技术。