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Abstract #4938

CAMWARE: Cascaded Multi-level Wavelet Refine Neural Network for Accelerated Whole-brain MR Vessel Wall Imaging

Zhehao Hu1,2, Alexander Lerner1, Roy Poblete3, and Zhaoyang Fan1,4,5
1Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States, 2Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States, 3Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States, 4Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States, 5Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, United States

Synopsis

3D MR vessel wall imaging (VWI) is a non-invasive imaging modality for directly assessing intracranial arterial wall diseases. A typical intracranial VWI protocol requires 6-12 minutes per scan to obtain adequate spatial coverage and resolution. Such a long scan time hinders widespread use of VWI in clinical settings. We have developed a novel intracranial vessel-dedicated CAscaded Multi-level WAvelet REfine (CAMWARE) network that enables a VWI scan within 4 minutes. The proposed network achieved significant improvement in vessel wall delination over conventional compressed sensing reconstruction, and several state-of-the-art deep neural networks, such as U-Net and multi-level wavelet U-Net.

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Keywords