A new magnetic resonance (MR) imaging technique using hyperpolarized helium lights up the lungs airways, providing, for the first time, clear resolution of even the smaller, seventh-generation airways. The technique, dynamic hyperpolarized 3He (helium) MR imaging, should help physicians better understand and treat asthma, as well as other chronic obstructive pulmonary diseases. Researchers from Brigham and Womens Hospital reported their findings in the May issue of the journal Radiology.
"Other non-radioactive techniques have only been able to image lung peripheries," said the studys principal investigator, Mitchell S. Albert, Ph.D., assistant professor of radiology at Harvard Medical School and director of the hyperpolarized noble gas MRI laboratory at Brigham and Womens Hospital in Boston. "Dynamic hyperpolarized helium MR imaging offers a completely noninvasive and safe method of studying the airways."
Dr. Albert collaborated with other researchers to pioneer hyperpolarized noble gas MR imaging, a technique he conceptualized in 1991 while researching the effect of anesthesia on the brain. "Our new technique provides information on ventilation, while depicting structure and function of the airways," Dr. Albert said. "Other non-radioactive imaging modalities do not provide this type of information."
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In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
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07.12.2016 | Health and Medicine