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Scientists Develop Bizarre Helmet for Brain Scan

A brain-scanning MRI machine at Carnegie Mellon University in Pittsburgh, November 26, 2014.Credit: Keith Srakocic / AP
A brain-scanning MRI machine at Carnegie Mellon University in Pittsburgh, November 26, 2014.Credit: Keith Srakocic / AP
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Scientists Develop Bizarre Helmet for Brain Scan

A brain-scanning MRI machine at Carnegie Mellon University in Pittsburgh, November 26, 2014.Credit: Keith Srakocic / AP
A brain-scanning MRI machine at Carnegie Mellon University in Pittsburgh, November 26, 2014.Credit: Keith Srakocic / AP

A research team at the University of Boston’s Photonics Center developed an imaging tool that could replace the traditional form of MRI scan and ensure more accurate results and less anxiety.

Usually, patients undergoing such a medical procedure could experience stress and discomfort, however, the new helmet-like tool, which marks a revolution in the field of medical imaging, is characterized with a funny look that alleviates stress. During the study published Feb. 12 in the scientific journal Advanced Material, the researchers reported the metamaterial used in the design, packing in a ton of physics, engineering, and mathematical know-how. The design was overseen by Xin Zhang, professor of mechanical engineering at BU's Photonics Center.

“The metamaterials used in the helmet is a type of engineered structure created from small unit cells that might be unspectacular alone, but when grouped together in a precise way, get new superpowers not found in nature. Metamaterials, for instance, can bend, absorb, or manipulate waves -- such as electromagnetic waves, sound waves, or radio waves. Each unit cell is typically arranged in a repeating pattern in rows and columns; they can be designed in different sizes and shapes, and placed at different orientations, depending on which waves they're designed to influence,” explained Zhang.

The materials used in the helmet include a component that blocks sound without stopping airflow (imagine quieter jet engines and air conditioners) and a magnetic metamaterial that can improve the quality of magnetic resonance imaging (MRI) machines used for medical diagnosis. These materials were deployed in a helmet-like device, which fits over a person's head and can be worn during a brain scan, boosts MRI performance, creating crisper images that can be captured at twice the normal speed. According to Zhang, the helmet makes MRIs less costly and more time efficient for doctors, radiologists, and patients -- all while improving image quality, which will help make the technology more widely available, particularly in the developing countries.

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Heartbroken Brits Abandon Pets as Living Costs Bite

Rising numbers of pets are being left at the Mayhew shelter in London as owners no longer able to afford their care take the heartbreaking decision to try to re-home them. Ben STANSALL / AFP
Rising numbers of pets are being left at the Mayhew shelter in London as owners no longer able to afford their care take the heartbreaking decision to try to re-home them. Ben STANSALL / AFP
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Heartbroken Brits Abandon Pets as Living Costs Bite

Rising numbers of pets are being left at the Mayhew shelter in London as owners no longer able to afford their care take the heartbreaking decision to try to re-home them. Ben STANSALL / AFP
Rising numbers of pets are being left at the Mayhew shelter in London as owners no longer able to afford their care take the heartbreaking decision to try to re-home them. Ben STANSALL / AFP

Staff at a London animal shelter have seen more than their fair share of abandoned pets over the years, from kittens in boxes to budgies dropped outside in the dead of night.
But lately there has been a surge in the numbers as people make the heartbreaking decision to give up their animal companions, no longer able to afford to care for their pets.

Struggling animal owners are feeling "a lot of heartache... and also shame and frustration that they're having to make these decisions," said Elvira Meucci-Lyons, the boss of the Mayhew shelter in Kensal Green, west London.

"They come to us because they feel they have no choice," she said.

"Behind every animal we take in there's a human story."

The small center has taken in more than 130 animals this year alone. It is part of a wider rise across the UK, where tens of thousands of pets have been abandoned since the Covid-19 pandemic and the onset of a cost-of-living crisis.

In the first few months of this year, more than 5,700 abandonments have been reported to the RSPCA, the world's oldest animal welfare organization -- a 32 percent rise on the same period in 2024.

Last year saw around 22,500 cases reported in total, up more than seven percent on 2023.
The challenge of affording animal care poses a heart-wrenching problem for many in Britain, a nation of dog and cat lovers where half the adult population -- more than 26 million people -- has a pet, according to the RSPCA.

And it has hit the country's poorest especially hard. Staff at Mayhew said some owners were having to choose between feeding themselves or their pets.

Several pets at the center -- including dogs Brownie, a one-year-old toy poodle, and Astro, a pocket American bully -- were brought in because their owners lost their homes due to financial troubles.

Stories like these are "the most upsetting", Meucci-Lyons said, because in hard times pet owners "need their lovely animals more than ever and the dog or cat doesn't want to do without their owner."

Rising vet bills
Mayhew staff said more pets were also arriving at the center in Kensal Green in poor health, often because their owners cannot afford veterinary bills.

Felix's case is typical. The muscular nine-year-old tomcat was playing with a length of string. But he arrived with tooth problems, with his owners bringing him to the shelter and saying they couldn't afford to keep him.
"We're seeing quite a lot more needing dental work nowadays," said Mayhew spokeswoman Olivia Patt.

The pandemic saw a spike in pet ownership under government lockdowns, and a subsequent wave of people then giving up their animals as normal lifestyles resumed.

Some people are returning lockdown pets, several years on. But RSPCA spokesman David Bowles told AFP that living costs, which soared during the pandemic, have become a major factor driving abandonments.

"We are now five years on from the first lockdown under Covid. The RSPCA believes the cost-of-living crisis is really impacting people's ability to pay for vet treatment in particular," he said.

UK inflation soared above 11 percent in October 2022, the highest level in more than four decades, and while it has slowed in the last few years, people are still feeling the squeeze.

Prices for many items including pet food have gone up by around 25 percent.
At Mayhew, staff have been doing all they can, from providing struggling owners with pet food and animal care packages, to offering free preventative treatments.

But the pressure has pushed the shelter's bubbly staff to their limits.

"We are run off our feet, we can't keep up with the demand," said Meucci-Lyons.

Even though the staff are comforted by knowing they make a difference, "every day it is heartbreaking -- we go to bed at night thinking about the dogs and cats we can't help," she said.