Hashtag
The Times Real Estate

Breakthrough in 0.05 Tesla MRI reported by HKU Engineering team in Science Journal

HONG KONG SAR - Media OutReach Newswire - 25 June 2024 - Magnetic resonance imaging (MRI) has revolutionised healthcare with its non-ionising, non-invasive, multi-contrast and quantitative capabilities. It also presents a promising platform for future artificial intelligence-driven medical diagnoses.

However, limited accessibility, especially in low and middle-income countries, is a challenge due to high costs and specialised settings required for standard superconducting MRI scanners. These scanners are mostly found in specialised radiology departments and large imaging centres, restricting their availability in other medical settings. The need for radiofrequency shielded rooms and high-power consumption further adds to the cost and mobility limitations. Furthermore, most MRI scanners are concentrated in high-income countries at present time, presenting an exemplary case of ever-expanding global healthcare disparity.

Prototype of a low-power, compact, and shielding-free MRI scanner using an open 0.05 Tesla permanent magnet. It incorporates active sensing and deep learning to address electromagnetic interference (EMI) signals.
Prototype of a low-power, compact, and shielding-free MRI scanner using an open 0.05 Tesla permanent magnet. It incorporates active sensing and deep learning to address electromagnetic interference (EMI) signals.

Led by Professor Ed X. Wu, Lam Woo and Chair Professor of Biomedical Engineering, a research team from Department of Electrical and Electronic Engineering at the University of Hong Kong (HKU) has developed a whole-body MRI scanner that operates on a standard wall power outlet without radiofrequency or magnetic shielding cages. The machine costs only a fraction of current clinical scanners, is safer, and needs no costly infrastructure to run.

The detailed findings have been published in renowned scientific journal Science, and companied by a Science Perspective article.

The scanner developed by the HKU team uses a compact 0.05 Tesla permanent magnet and incorporates active sensing and deep learning to address electromagnetic interference (EMI) signals. Human imaging at such a low magnetic field strength has been widely viewed as challenging, if not impossible. In order to eliminate EMI signals, the researchers deployed EMI sensing coils positioned around the scanner and implemented a deep learning method to directly predict EMI-free nuclear magnetic resonance signals from acquired data. To enhance image quality and reduce scan time, the team also developed a deep learning image formation method. It integrates image reconstruction and three-dimensional multi-scale super-resolution, and leverages the homogeneous human anatomy and image contrasts available in high-field high-resolution MRI data.

The team has succeeded in implementing commonly used clinical protocols with an ultra-low-field strength of 0.05 Tesla, including T1-weighted, T2-weighted, and diffusion-weighted imaging, and optimising their contrasts for different anatomical structures. Each protocol was designed to have a scan time of 8 minutes or less, with an image resolution of approximately 2x2x8 mm³. The scanner power consumption during scanning was under 1800W, and around 300W when idle.

The HKU team conducted imaging on healthy volunteers, capturing brain, spine, abdomen, lung, musculoskeletal, and cardiac images. Deep learning signal prediction effectively eliminated EMI signals, enabling clear imaging without shielding. The brain images showed various brain tissues, while the spine images revealed intervertebral disks, spinal cord, and cerebrospinal fluid. Abdominal images displayed major structures like the liver, kidneys, and spleen. Lung images showed pulmonary vessels and parenchyma. Knee images identified knee structures such as cartilage and meniscus. Cardiac cine images depicted the left ventricle contraction, while neck angiography revealed carotid arteries.

Additionally, a new deep learning image formation approach greatly improved the 0.05 Tesla image quality for various anatomical structures, including the brain, spine, abdomen, and knee. It effectively suppressed noise and artefacts and increased image spatial resolution.

The low-power and simplified whole-body 0.05 Tesla MRI scanner developed by Professor Wu's research team is able to operate without the need for radiofrequency or magnetic shielding to address MRI accessibility. The researchers experimentally demonstrated the general utility of this scanner for imaging various human anatomical structures at whole-body level, even in the presence of strong EMI signals, with acceptable scan time. They also demonstrated the potential of deep learning image formation to substantially augment 0.05 Tesla image quality by exploiting computing and extensive high-field MRI data.

The breakthroughs reported in this study shall catalyse the development of an entirely new class of affordable, patient-centric, and deep learning-powered ultra-low-field MRI scanners, addressing unmet clinical needs in diverse healthcare settings worldwide.

"We are looking forward to working with clinician scientists here at HKU and worldwide to advance computing-powered imaging technologies and explore their clinical values in the coming years," said Professor Wu.

"Nuclear magnetic resonance is a gift from nature since nature endows us humans with a vast quantity of MRI-visible water molecules, and we must utilise this magnetic resonance physics phenomenon more for the benefit of humanity." He added.

Link to the Science paper: https://www.science.org/stoken/author-tokens/ST-1847/full
Link to Science Perspective article: https://www.science.org/doi/10.1126/science.adp0670

Hashtag: #HKU

The issuer is solely responsible for the content of this announcement.

Business News

CUHK Faculty of Science: Home to Nobel Laureates and Next-Generation Breakthroughs

HONG KONG SAR - Media OutReach Newswire – 12 March 2025 - Since its establishment in 1963, The Chinese University of Hong Kong's Faculty of Science (CUHK Science) has emerged as a global powerhouse ...

Hashtag.net.au - avatar Hashtag.net.au

New Book Challenges Traditional Hypertension Treatments: Case Study Reveals Breakthrough Approach

"Eradicating Hypertension" Explores How Oxygen Intake and Breathing Optimization Can Transform Blood Pressure Management NEW YORK, USA - Media OutReach Newswire - 10 March 2025 - Hypertension remains...

Hashtag.net.au - avatar Hashtag.net.au

Uzbekistan’s Sellers Post Record Sales Growth on Wildberries Marketplace

MOSCOW, RUSSIA - Media OutReach Newswire - 12 March 2025 - Wildberries, a leading e-commerce platform in Eurasia, saw record sales growth in products from Uzbekistan-based sellers, led by surging dem...

Hashtag.net.au - avatar Hashtag.net.au

Creo Solutions to Launch Booya, an OLP to Expand Financial Inclusion in Mexico

MEXICO CITY, MEXICO - Media OutReach Newswire - 11 March 2025 - Mexican fintech company Creo Solutions is set to launch Booya, a new online lending platform designed to serve the country's underbanke...

Hashtag.net.au - avatar Hashtag.net.au

China’s "Two Sessions" 2025 Government Policy Outlook Indicates Renewed Opportunities for Commercial Real Estate

Cushman & Wakefield Interpretation Report Highlights Five Areas of Opportunity for Real Estate Sectors HONG KONG SAR - Media OutReach Newswire - 12 March 2025 - Global real estate services firm C...

Hashtag.net.au - avatar Hashtag.net.au

James Dyson Award 2025 seeks groundbreaking inventions from young engineers and scientists

HONG KONG SAR - Media OutReach Newswire – 12 March 2025 - The James Dyson Award, an international student design and engineering competition, opens for submissions today to its 2025 programme in 28 ...

Hashtag.net.au - avatar Hashtag.net.au

Health & Wellness

The Importance of Having a Defibrillator in Public Spaces

Hashtag.net.au - avatar Hashtag.net.au

Life is uncertain! It is almost impossible to be 100% sure of the future, anything can happen to anyone at any time. However, in the case of Sudden Cardiac Arrests (SCA), the presence of an Automat...

Understanding Anxiety: Different Types and Treatment Options

Hashtag.net.au - avatar Hashtag.net.au

(Source) Every person experiences anxiety in some form as they face either pre-event heart palpitations before important events or constant sleep deprivation because of ongoing concerns. People exp...

How Technology Is Improving Community Support Services?

Hashtag.net.au - avatar Hashtag.net.au

(Source) Technology is literally a part of our everyday lives. Everything we do is highly dependent on technology in this day and age. The interesting part is that not just the younger generations ...