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Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

A precise new quantitative brain scan measurement method

RATE THIS! +45
Posted in Science on 19th Nov, 2013 11:30 PM by AlexMuller

An interdisciplinary Stanford team has developed a new method for quantitatively (using numbers) measuring human brain tissue using MRI (which formerly provided mostly qualitative, such as “bright” or “dark,” information).

 
The team members measured the volume of large molecules (macromolecules) within each cubic millimeter of the brain. Their method may improve how doctors diagnose and treat neurological diseases such as multiple sclerosis.
 
“We’re moving from qualitative — saying something is off — to measuring how [far] off it is,” said Aviv Mezer, Stanford postdoctoral scholar in psychology. The team’s work, funded by research grants from the National Institutes of Health, appears in the journal Nature Medicine.
 
He found inspiration in seemingly unrelated basic research from the 1980s. In theory, he read, magnetic resonance could quantitatively discriminate between different types of tissues. But previous quantitative MRI measurements required uncomfortably long scan times. Mezer, whose background is in biophysics, and psychology Professor Brian Wandell unearthed a faster scanning technique, albeit one noted for its lack of consistency.
 
“Now we’ve found a way to make the fast method reliable,” Mezer said. Mezer and Wandell, working with neuroscientists, radiologists and chemical engineers, calibrated their method with a physical model — a radiological “phantom” — filled with agar gel and cholesterol to mimic brain tissue in MRI scans.

Tags: brainneurosciencescandiseasehealthMRI

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Comments

Author: Guest
Posted: 2013-11-20
+1
Multidisciplinary approaches are becoming critical for progress in science and technology. In this case the expertness in medical issues and biophysics got together and made a critical step to produce new test Reply
Author: Guest
Posted: 2013-11-20
+0
Being able to put numbers to observation is a big step forward- how much of tissue is changed will provide needed information relevant to what the implications are of such changes Reply
Author: Guest
Posted: 2013-11-20
+1
This will change how diagnosis and prognosis is made for many disorders were large molecules are accumulated as a part of pathology Reply
Author: Guest
Posted: 2013-11-20
+0
A head MRI scan has been quite acceptable to patients as they do not use radiation -just powerful magnets and radio waves
1 Replies
Author: Guest
Posted: 2013-11-20
+0
No need to be nervous about use of radioactivity in the cliic - it is used very safely Reply
Reply


 

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