Yueqi Qiu

Yueqi Qiu

Ph.D. Candidate at Shanghai Jiao Tong University, researching MRI.

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publications

Susceptibility-weighted imaging at high-performance 0.5 T magnetic resonance imaging system: Protocol considerations and experimental results

Published in Frontiers in Neuroscience, 1900

Abstract The high-performance low-field magnetic resonance imaging (MRI) system, equipped with modern hardware and contemporary imaging capabilities, has garnered interest within the MRI community in recent years. It has also been proven to have unique advantages over high-field MRI in both physical and cost aspects. However, for susceptibility weighted imaging (SWI), the low signal-to-noise ratio and the long echo time inherent at low field hinder the SWI from being applied to clinical applications. This work optimized the imaging protocol to select suitable parameters such as the values of time of echo (TE), repetition time (TR), and the flip angle (FA) of the RF pulse according to the signal simulations for low-field SWI. To improve the signal-to-noise ratio (SNR) performance, averaging multi-echo magnitude images and BM4D phase denoising were proposed. A comparison of the SWI in 0.5T and 1.5T was carried out, demonstrating the capability to identify magnetic susceptibility differences between variable tissues, especially, the blood veins. This would open the possibility to extend SWI applications in the high-performance low field MRI.

Recommended citation: Qiu, Y., Bai, H., Chen, H., et al. (2022). "Susceptibility-weighted imaging at high-performance 0.5 T magnetic resonance imaging system: Protocol considerations and experimental results." Frontiers in Neuroscience, 16, 999240. doi: 10.3389/fnins.2022.999240
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Spatiotemporal encoding MRI in a portable low-field system
(Finalist for the 2025 Young Investigator Award)

Published in Magnetic Resonance in Medicine, 2024

Abstract Purpose Demonstrate the potential of spatiotemporal encoding (SPEN) MRI to deliver largely undistorted 2D, 3D, and diffusion weighted images on a 110 mT portable system.

Recommended citation: Qiu, Y., Dai, K., Zhong, S., Chen, S., Wang, C., Chen, H., Frydman, L., & Zhang, Z. (2024). "Spatiotemporal encoding MRI in a portable low-field system." Magnetic Resonance in Medicine. 92(3), 1011-1021. doi: 10.1002/mrm.30104
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A new approach for multislice spatiotemporal encoding MRI in a portable low‐field system

Published in Magnetic Resonance in Medicine, 2024

Abstract Purpose Spatiotemporal encoding (SPEN) MRI offers a unique alternative to address image distortion problems in echo planar acquisition-based techniques, at portable low-field systems that lack multiple receiver coils. However, existing 2-π multislice SPEN schemes fail to keep consistent SNRs and contrasts with different numbers of slice settings. This work proposes a new multislice SPEN scheme (SPENms) to achieve stable quality imaging in portable low-field MRI systems.

Recommended citation: Qiu, Y., Chen, S., Solomon, E., et al. (2025). "A new approach for multislice spatiotemporal encoding MRI in a portable low‐field system." Magnetic Resonance in Medicine. 93(2), 709-717. doi: 10.1002/mrm.30300
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talks

teaching

Teaching experience 1

Undergraduate course, University 1, Department, 2014

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Teaching experience 2

Workshop, University 1, Department, 2015

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