Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.

 

Ray Kurzweil

 

Researchers close in on the dream of a safe portable brain scanner

RATE THIS! +27
Posted in Science on 9th Jun, 2014 01:00 AM by AlexMuller

If research on the brain is to come close to meeting the hopes many researchers and government bodies have for it, one thing is going to have to change: Brain scanning will have to become a process that can be done in less restrictive situations and without the health risks that make some scanning methods an option of last resort.

 
Diffuse optical technology, or DOT, is closing in on the accuracy of the industry standard: functional MRI. Though the fMRI is accurate, it requires the patient to be immobilized in the machine, restricting how useful it is for understanding how the brain responds to stimuli.
 
In a study recently published in Nature Photonics, researchers debuted a new DOT, or diffuse optical tomography, instrument that could see two-thirds of the head and depict brain processes that take place in multiple regions and brain networks, such as those involved in language. The researchers, led by Joseph Culver, a radiologist at Washington University of St. Louis, compared the maps of activity created by DOT and fMRI scans and found a 75 percent overlap.
 
DOT itself isn’t new. For about a decade, doctors and researchers have looked to it as a more portable and safer alternative to fMRI scans. MRI technology uses magnets which interfere with the functioning of medical devices including pacemakers and cochlear implants. PET scans, another common method of coaxing a brain to do the equivalent of say ah, expose patients to significant levels of radiation.
 
But because DOT uses light, rather than the MRI’s magnets, to observe increased blood flow to active neural areas, getting a full picture of what goes on in the entire brain has been the main challenge. (Here’s a useful illustration of how DOT works.) The technology only illuminates what goes on in the outermost centimeter of brain tissue, but that area includes some pretty compelling functions like memory and language.
 
“When the neuronal activity of a region in the brain increases, highly oxygenated blood flows to the parts of the brain doing more work, and we can detect that. It’s roughly akin to spotting the rush of blood to someone’s cheeks when they blush,” Culver said in a news release.

Tags: brainMRIfMRIbrain scanningPETdiffuse optical technology

Read original article » Back to category

Comments

Author: Guest
Posted: 2014-06-09
+2
fMRI already made a great difference in understanding how brain works- DOT is going to be a next big step
2 Replies
Author: Guest
Posted: 2014-06-09
+1
Yes, promising. Researchers have already showen that DOT could be used to observe how electrical stimulation of the brain lessens Parkinson’s symptoms—something that can’t be done with magnetic resonance imaging — and they indicate they are likely to dive deeper into that project. Reply
Reply
Author: Guest
Posted: 2016-05-06
+0
detto:"il terzo aborto volontario di una ragazza iscritta al 5° anno di medicina, che non voleva saperne di pillola, preservativo o di&muamfa.aqrot;Come ci è arrivata? una così, se ti chiudi un dito in una porta ti taglia il braccio al gomito. Reply


 

Recent headlines

  • Posted in Business on 2017-09-22 18:42:50
    To Achieve 100% Renewable Energy, We Need Way Better.....read more
    Posted in Medicine on 2017-09-22 18:31:20
    How the poliovirus can be used to battle lethal cancers..read more
    Posted in Business on 2017-09-21 08:16:42
    Google signs $1.1bn HTC smartphone deal..read more
    Posted in Business on 2017-09-21 08:11:40
    US solar plant costs fall another 30 per cent in just one.....read more
    Posted in Science on 2017-09-21 08:04:25
    SpaceX will call global internet satellite network Starlink..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Scientists probe Neptune's depths to reveal secrets of icy.....read more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin cancer.....read more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not work..read more
    Posted by AlexMuller
    Artificial neural networks decode brain activity during.....read more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the nearest.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me