Rice University students collaborate on COVID-19 solutions

game changers

Rice 360˚ Institute of Global Health's student innovators created projects and devices — from disinfecting devices and optimized intubation tools — that respond to challenges presented by COVID-19. Courtesy of Rice University

An annual program with Rice University and its partners in Africa had to do things differently in light of the COVID-19 pandemic. Not only did operations have to shift to a virtual approach, but the projects themselves instead addressed the needs created by the disease.

Rice 360˚ Institute for Global Health, which collaborates with the Malawi University of Science and Technology (MUST) and the University of Malawi, The Polytechnic (Poly), continued their annual programming virtually over six weeks. The collaboration brings students together to solve global health issues, and this year's issue to address was overwhelmingly COVID-19.

"We had to give a lot of thought to whether we might have to cancel the program, and that was really heartbreaking to think about," says Rice 360˚ Director Rebecca Richards-Kortum, professor of bioengineering, in a news release. "Back in those days of late March and early April, I never really imagined how wonderful the virtual internship program could be."

Thirteen undergraduate interns and eight teaching assistants from Rice and Malawi, worked on six different projects, and three were presented in an online event on July 16. Here were the projects that were presented.

A disinfecting system that has the capability to sterilize multiple N95 masks at once. The system uses ultraviolet lights that can kill the coronavirus in around 30 minutes. Alternatively, the project included a smaller version that could be powered by solar energy. Yankholanga Pelewelo of MUST, Carolyn Gonawamba of Poly, and Andrew Abikhaled and Bhavya Gopinath of Rice developed the technology.
A walk-in decontamination unit that can decontaminate up to 3,000 people per day. The team of interns developed a prototype that consisted of PVC frame covered in plastic with nozzles to spray disinfectant. The project has already received interest from labs and hospitals for the device. Team members included Brenald Dzonzi of Poly, Mwayi Yellewa of MUST, and Kaitlyn Heintzelman, Krystal Cheung, and Sana Mohamed of Rice.
A redesigned intubation box that gives doctors better access to patients during the procedure. More than half of the 3,000 health care workers who have died from the coronavirus were doctors who focused on respiratory procedures, the team pointed out, and this daunting fact calls for redesigned tools. In total, the student innovators pitched three different designs that each included armholes in the sides, with a third hole on top to let a clinician or nurse assist with the procedure. The student team consisted of Chikumbutso Walani of Poly, Ruth Mtuwa of MUST, and Lauren Payne and Austin Hwang of Rice.

The other three projects included in the program but didn't present were designs for face shields, a hand sanitizer station and a contactless temperature monitor. All of the projects were led by teaching assistants Aubrey Chikunda and Chisomo Mukoka from MUST; Hannah Andersen, Nimisha Krishnaswamy, Alex Lammers and Ben Zaltsman of Rice; and Hope Chilunga and Francis Chilomo from Poly.

While pivoting the program to virtual comes with its challenges, Maria Oden — a professor of bioengineering, director of Rice's Oshman Engineering Design Kitchen and director of Rice 360˚ — recognizes the opportunities it provides as well.

"It would have been easy and understandable to cancel this internship, but that's not what happened, and look what the result was," Oden says in the release. "Over 90 people have tuned in to see the work of the interns. That's something we've never achieved with our in-person internships. We can learn from this experience."

Rice 360° Virtual Internship Highlights – Summer 2020www.youtube.com

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Rice University researchers unveil new model that could sharpen MRI scans

MRI innovation

Researchers at Rice University, in collaboration with Oak Ridge National Laboratory, have developed a new model that could lead to sharper imaging and safer diagnostics using magnetic resonance imaging, or MRI.

In a study recently published in The Journal of Chemical Physics, the team of researchers showed how they used the Fokker-Planck equation to better understand how water molecules respond to contrast agents in a process known as “relaxation.” Previous models only approximated how water molecules relaxed around contrasting agents. However, through this new model, known as the NMR eigenmodes framework, the research team has uncovered the “full physical equations” to explain the process.

“The concept is similar to how a musical chord consists of many notes,” Thiago Pinheiro, the study’s first author, a Rice doctoral graduate in chemical and biomolecular engineering and postdoctoral researcher in the chemical sciences division at Oak Ridge National Laboratory, said in a news release. “Previous models only captured one or two notes, while ours picks up the full harmony.”

According to Rice, the findings could lead to the development and application of new contrast agents for clearer MRIs in medicine and materials science. Beyond MRIs, the NMR relaxation method could also be applied to other areas like battery design and subsurface fluid flow.

“In the present paper, we developed a comprehensive theory to interpret those previous molecular dynamics simulations and experimental findings,” Dilipkumar Asthagiri, a senior computational biomedical scientist in the National Center for Computational Sciences at Oak Ridge National Laboratory, said in the release. ”The theory, however, is general and can be used to understand NMR relaxation in liquids broadly.”

The team has also made its code available as open source to encourage its adoption and further development by the broader scientific community.

“By better modeling the physics of nuclear magnetic resonance relaxation in liquids, we gain a tool that doesn’t just predict but also explains the phenomenon,” Walter Chapman, a professor of chemical and biomolecular engineering at Rice, added in the release. “That is crucial when lives and technologies depend on accurate scientific understanding.”

The study was backed by The Ken Kennedy Institute, Rice Creative Ventures Fund, Robert A. Welch Foundation and Oak Ridge Leadership Computing Facility at Oak Ridge National Laboratory.

Houston-area lab grows with focus on mobile diagnostics and predictive medicine

mobile medicine

When it comes to healthcare, access can be a matter of life and death. And for patients in skilled nursing facilities, assisted living or even their own homes, the ability to get timely diagnostic testing is not just a convenience, it’s a necessity.

That’s the problem Principle Health Systems (PHS) set out to solve.

Founded in 2016 in Clear Lake, Texas, PHS began as a conventional laboratory but quickly pivoted to mobile diagnostics, offering everything from core blood work and genetic testing to advanced imaging like ultrasounds, echocardiograms, and X-rays.

“We were approached by a group in a local skilled nursing facility to provide services, and we determined pretty quickly there was a massive need in this area,” says James Dieter, founder, chairman and CEO of PHS. “Turnaround time is imperative. These facilities have an incredibly sick population, and of course, they lack mobility to get the care that they need.”

What makes PHS unique is not only what they do, but where they do it. While they operate one of the largest labs serving skilled nursing facilities in the state, their mobile teams go wherever patients are, whether that’s a nursing home, a private residence or even a correctional facility.

Diagnostics, Dieter says, are at the heart of medical decision-making.

“Seventy to 80 percent of all medical decisions are made from diagnostic results in lab and imaging,” he says. “The diagnostic drives the doctor’s or the provider’s next move. When we recognized a massive slowdown in lab results, we had to innovate to do it faster.”

Innovation at PHS isn’t just about speed; it’s about accessibility and precision.

Chris Light, COO, explains: “For stat testing, we use bedside point-of-care instruments. Our phlebotomists take those into the facilities, test at the bedside, and get results within minutes, rather than waiting days for results to come back from a core lab.”

Scaling a mobile operation across multiple states isn’t simple, but PHS has expanded into nine states, including Texas, Oklahoma, Kansas, Missouri and Arizona. Their model relies on licensed mobile phlebotomists, X-ray technologists and sonographers, all trained to provide high-level care outside traditional hospital settings.

The financial impact for patients is significant. Instead of ambulance rides and ER visits costing thousands, PHS services often cost just a fraction, sometimes only tens or hundreds of dollars.

“Traditionally, without mobile diagnostics, the patient would be loaded into a transportation vehicle, typically an ambulance, and taken to a hospital,” Dieter says. “Our approach is a fraction of the cost but brings care directly to the patients.”

The company has also embraced predictive and personalized medicine, offering genetic tests that guide medication decisions and laboratory tests that predict cognitive decline from conditions like Alzheimer's and Parkinson’s.

“We actively look for complementary services to improve patient outcomes,” Dieter says. “Precision medicine and predictive testing have been a great value-add for our providers.”

Looking to the future, PHS sees mobile healthcare as part of a larger trend toward home-based care.

“There’s an aging population that still lives at home with caretakers,” Dieter explains. “We go into the home every day, whether it’s an apartment, a standalone home, or assisted living. The goal is to meet patients where they are and reduce the need for hospitalization.”

Light highlighted another layer of innovation: predictive guidance.

“We host a lot of data, and labs and imaging drive most treatment decisions,” Light says. “We’re exploring how to deploy diagnostics immediately based on results, eliminating hours of delay and keeping patients healthier longer.”

Ultimately, innovation at PHS isn’t just about technology; it’s about equity.

“There’s an 11-year life expectancy gap between major metro areas and rural Texas,” Dieter says. “Our innovation has been leveling the field, so everyone has access to high-quality diagnostics and care, regardless of where they live.”

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