Featured Research

from universities, journals, and other organizations

Adding face shields to helmets could help avoid blast-induced brain injuries

Date:
November 22, 2010
Source:
Massachusetts Institute of Technology
Summary:
According to the US Department of Defense, about 130,000 US service members deployed in Iraq and Afghanistan have sustained traumatic brain injuries -- ranging from concussion to long-term brain damage and death -- as a result of an explosion. A recent analysis reveals one possible way to prevent those injuries -- adding a face shield to the helmet worn by military personnel.

More than half of all combat-related injuries sustained by U.S. troops are the result of explosions, and many of those involve injuries to the head. According to the U.S. Department of Defense, about 130,000 U.S. service members deployed in Iraq and Afghanistan have sustained traumatic brain injuries -- ranging from concussion to long-term brain damage and death -- as a result of an explosion. A recent analysis by a team of researchers led by MIT reveals one possible way to prevent those injuries -- adding a face shield to the helmet worn by military personnel.

Related Articles


In a paper to be published November 22 in the Proceedings of the National Academy of Sciences, Raul Radovitzky, an associate professor in MIT's Department of Aeronautics and Astronautics, and his colleagues report that adding a face shield to the standard-issue helmet worn by the vast majority of U.S. ground troops could significantly reduce traumatic brain injury, or TBI. The extra protection offered by such a shield is critical, the researchers say, because the face is the main pathway through which pressure waves from an explosion are transmitted to the brain.

In assessing the problem, Radovitzky, who is also the associate director of MIT's Institute for Soldier Nanotechnologies, and his research team members recognized that very little was known about how blast waves interact with brain tissue or how protective gear affects the brain's response to such blasts. So they created computer models to simulate explosions and their effects on brain tissue. The models integrate with unprecedented detail the physical aspects of an explosion, such as the propagation of the blast wave, and the anatomical features of the brain, including the skull, sinuses, cerebrospinal fluid, and layers of gray and white matter.

"There is a community studying this problem that is in dire need of this technology," says Radovitzky, who is releasing the computer code for the creation of the models to the public this week. In doing so, he hopes the models will be used to identify ways to mitigate TBI, which has become prominent because advances in protective gear and medicine have meant that more service members are surviving blasts that previously would have been fatal.

To create the models, Radovitzky collaborated with David Moore, a neurologist at the Defense and Veterans Brain Injury Center at Walter Reed Army Medical Center, who used magnetic resonance imaging to model features of the head. The researchers then added data collected from colleagues' studies of how the brain tissue of pigs responds to mechanical events, such as shocks. They also included details about what happens to the chemical energy that is released upon detonation (outside the brain) that instantly converts into thermal, electromagnetic and kinetic energy that interacts with nearby material, such as a soldier's helmet.

The researchers recently used the models to explore one possibility for enhancing the helmet currently worn by most ground troops, which is known as the Advanced Combat Helmet, or ACH: a face shield made of polycarbonate, a type of transparent armor material. They compared how the brain would respond to the same blast wave simulated in three scenarios: a head with no helmet, a head wearing the ACH, and a head wearing the ACH with a face shield. In all three simulations, the blast wave struck the person from the front.

The analysis revealed that although the ACH -- as currently designed and deployed -- slightly delayed the arrival of the blast wave, it didn't significantly mitigate the wave's effects on brain tissue. After the researchers added a conceptual face shield in the third simulation, the models showed a significant reduction in the magnitude of stresses on the brain because the shield impeded direct transmission of blast waves to the face.

Radovitzky hopes that the models will play a major role in developing protective gear not only for the military, but also for researchers studying the effects of TBI in the civilian population as a result of car crashes and sports injuries. While the study was limited to a single set of blast characteristics, future simulations will study different kinds of blast conditions, such as angle and intensity, as well as the impact of blast waves on the neck and torso, which have been suggested as a possible indirect pathway for brain injury.


Story Source:

The above story is based on materials provided by Massachusetts Institute of Technology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nyein, M., Jason, A., Yu. L., Pita, C., Joannopoulos, J., Moore, D., Radovitzky, R. In silico investigation of intracranial blast mitigation with relevance to military traumatic brain injury. Proceedings of the National Academy of Sciences, 22 November, 2010

Cite This Page:

Massachusetts Institute of Technology. "Adding face shields to helmets could help avoid blast-induced brain injuries." ScienceDaily. ScienceDaily, 22 November 2010. <www.sciencedaily.com/releases/2010/11/101122152038.htm>.
Massachusetts Institute of Technology. (2010, November 22). Adding face shields to helmets could help avoid blast-induced brain injuries. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2010/11/101122152038.htm
Massachusetts Institute of Technology. "Adding face shields to helmets could help avoid blast-induced brain injuries." ScienceDaily. www.sciencedaily.com/releases/2010/11/101122152038.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Kids Die While Under Protective Services

Kids Die While Under Protective Services

AP (Dec. 18, 2014) As part of a six-month investigation of child maltreatment deaths, the AP found that hundreds of deaths from horrific abuse and neglect could have been prevented. AP's Haven Daley reports. (Dec. 18) Video provided by AP
Powered by NewsLook.com
UN: Up to One Million Facing Hunger in Ebola-Hit Countries

UN: Up to One Million Facing Hunger in Ebola-Hit Countries

AFP (Dec. 17, 2014) Border closures, quarantines and crop losses in West African nations battling the Ebola virus could lead to as many as one million people going hungry, UN food agencies said on Wednesday. Duration: 00:52 Video provided by AFP
Powered by NewsLook.com
When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
Why Your Boss Should Let You Sleep In

Why Your Boss Should Let You Sleep In

Newsy (Dec. 17, 2014) According to research out of the University of Pennsylvania, waking up for work is the biggest factor that causes Americans to lose sleep. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins