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The most important lesson from 83,000 brain scans | Daniel Amen | TEDxOrangeCoast
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Niveau CECRL
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Transcriber: Ilze Garda Reviewer: Denise RQ
In this talk, I'm going to give you the single most important lesson
my colleagues and I have learned from looking at 83,000 brain scans.
But first, let me put the lesson into context.
I am in the middle of seven children.
Growing up, my father called me a maverick
which to him was not a good thing.
(Laughter)
In 1972, the army called my number,
and I was trained as an infantry medic where my love of medicine was born.
But since I truly hated the idea of being shot at or sleeping in the mud,
I got myself retrained as an X-ray technician
and developed a passion for medical imaging.
As our professors used to say: "How do you know, unless you look?"
In 1979, when I was a second-year medical student,
someone in my family became seriously suicidal,
and I took her to see a wonderful psychiatrist.
Over time, I realized if he helped her, which he did,
it would not only save her life,
but it would also help her children and even her future grandchildren,
as they would be shaped by someone who is happier and more stable.
I fell in love with psychiatry
because I realized it had the potential to change generations of people.
In 1991, I went to my first lecture on brain SPECT imaging.
SPECT is a nuclear medicine study that looks at the blood flow and activity,
it looks at how your brain works.
SPECT was presented as a tool to help psychiatrists
get more information to help their patients.
In that one lecture, my two professional loves,
medical imaging and psychiatry,
came together, and quite honestly, revolutionized my life.
Over the next 22 years, my colleagues and I would build
the world's largest database of brain scans related to behavior
on patients from 93 countries.
SPECT basically tells us three things about the brain:
good activity, too little, or too much.
Here's a set of healthy SPECT scans.
The image on the left shows the outside surface of the brain,
and a healthy scan shows full, even, symmetrical activity.
The color is not important, it's the shape that matters.
In the image on the right, red equals the areas of high activity,
and in a healthy brain, they're typically in the back part of the brain.
Here's a healthy scan compared to someone who had two strokes.
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