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Georgia State researchers develop artificial intelligence models that learn as they go to discover novel brain patterns linked to mental illness.

If they have the genetics. we don't know if it is genetic, so it's hard to say well, he has this and this is why he has it that the more information you have, you can do brain imaging, genetics, and you find out more about the history and what he did and you start to separate whether he is a sociopath, psychopath, et cetera. >> jim, thank you very much. i appreciate the context and the nuance that you added here. thanks. up next, president biden signing an executive order aimed at protecting abortion access. why some democrats say this isn't enough and ukraine provided with four more rocket ...

Will: you said something that was fascinating to me. it makes sense, traumatic brain injury shows up on brain imaging, you said ptsd as well, psychological impact as well can show up in a medical diagnosis with physical tools. >> you check out the greatest point. it is combined, posttraumatic stress and traumatic brain injury go together. we can now see posttraumatic stress on brain imagery and say you have something, it is not in your imagination and we can treat it. rachel: you don't have to be in combat to find those images. it can be from anything, not just combat. >> most important, getti...

Scientists and entrepreneurs are increasingly turning to scent to help detect disease, boost memory, entertain, and protect people from food allergies.

And treatments. our chief medical correspondent dr. sanjay gupta has been investigating this issue and joins us now to tell us more. sanjay, what does this dye do and how can this lead to missed or delayed diagnoses? >> yeah. just like you said, this is called iv contrast. it's intravenous, a contrast that contains iodine, which is going to show up well if you image this on scans, you inject this into the bloodstream and it's basically to try to find abnormalities that you might otherwise miss. someone is having a stroke, for example, try to find exactly where the blood clot is that's causing ...