Pediatric magnetic resonance imaging: faster is better
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Published on: July 30, 2009
Sebastian Gallo-Bernal1,2, M Alejandra Bedoya2,3, Michael S Gee1,2
1Department of Radiology, Massachusetts General Hospital, Boston, MA, USA.
Insights
Accelerating magnetic resonance imaging (MRI) speeds up pediatric scans, reducing the need for sedation and anesthesia. This enhances diagnostic accuracy and workflow efficiency in pediatric radiology.
Area of Science:
- Radiology
- Medical Imaging
- Pediatric Imaging
Background:
- Magnetic resonance imaging (MRI) is crucial for pediatric diagnostics.
- Long scan times in children often necessitate sedation or anesthesia, impacting safety, cost, and workflow.
- Motion artifacts degrade image quality in pediatric MRI.
Purpose of the Study:
- To review techniques for accelerating MRI acquisition in pediatric patients.
- To present a framework for faster pediatric MRI using advanced hardware and pulse sequences.
- To discuss the clinical application and benefits of accelerated MRI in pediatric radiology.
Main Methods:
- Review of advanced MRI acceleration techniques: parallel imaging, single-shot acquisition, controlled aliasing, compressed sensing, and AI-based reconstructions.
- Integration of state-of-the-art MRI hardware and optimized pulse sequences.
- Framework development tailored for pediatric radiology practice.
Main Results:
- Accelerated MRI techniques significantly reduce scan times.
- Shorter examinations decrease the need for sedation and anesthesia.
- Improved image quality by minimizing motion artifacts and enhancing diagnostic yield.
- Increased scanner throughput and improved departmental efficiency.
Conclusions:
- MRI acceleration is vital for efficient and safe pediatric imaging.
- Synergistic use of advanced hardware and optimized sequences optimizes pediatric MRI.
- Implementing these techniques improves patient safety, reduces costs, and enhances diagnostic capabilities in pediatric radiology.
Abstract:
Magnetic resonance imaging (MRI) has emerged as the preferred imaging modality for evaluating a wide range of pediatric medical conditions. Nevertheless, the long acquisition times associated with this technique can limit its widespread use in young children, resulting in motion-degraded or non-diagnostic studies. As a result, sedation or general anesthesia is often necessary to obtain diagnostic images, which has implications for the safety profile of MRI, the cost of the exam and the radiology department's clinical workflow. Over the last decade, several techniques have been developed to increase the speed of MRI, including parallel imaging, single-shot acquisition, controlled aliasing techniques, compressed sensing and artificial-intelligence-based reconstructions. These are advantageous because shorter examinations decrease the need for sedation and the severity of motion artifacts, increase scanner throughput, and improve system efficiency. In this review we discuss a framework for image acceleration in children that includes the synergistic use of state-of-the-art MRI hardware and optimized pulse sequences. The discussion is framed within the context of pediatric radiology and incorporates the authors' experience in deploying these techniques in routine clinical practice.
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