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Abstract #5413

Fast and Sustainable Brain MRI by Triple-Modality Deblurring

Alexander Nazarov1, Dani Roizen2, Nahum Kiryati3, Gahl Grinberg2, and Arnaldo Mayer2
1Electrical Engineering, Tel-Aviv University, Tel-Aviv, Israel, 2Diagnostic Imaging, Sheba Medical Center, Affiliated to the School of Medicine, Ramat-Gan, Israel, 3The Manuel and Raquel Klachky Chair of Image Processing, School of Electrical Engineering, Tel-Aviv University, Tel-Aviv, Israel

Synopsis

Keywords: Sustainability

Motivation: Lengthy MRI acquisition negatively impacts sustainability due to high energy consumption, increased patient discomfort, and reduced clinical efficiency.

Goal(s): To develop an AI-based MRI reconstruction method that leverages complementary information from triple-modality orthogonal undersampling, significantly shortening acquisition times while maintaining image quality.

Approach: We introduced orthogonal, direction-specific undersampling of k-space data (x, y, z) combined with a customized 3D slice-based DCNN for joint deblurring of accelerated T2-weighted, T2-FLAIR, and SWIp images.

Results: The proposed method achieved ~4-fold acquisition acceleration compared to compressed sensing alone, with an average SSIM of 0.82, maintaining diagnostic image quality and substantially decreasing scanner operation time.

Impact: The proposed method enhances MRI sustainability by significantly reducing acquisition time, energy usage (approximately 60-75% reduction in gradient and RF power), and susceptibility artifacts. Improved efficiency enables sustainable imaging practices, benefiting clinical throughput in high-volume or resource-constrained settings.

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Keywords