Yeah it seems there are few new ideas for using brain imaging. I haven't looked into it too much yet, but I strongly suspect they are also garbage intended to trick people now that a fair number of us are aware of the polygraph scam
Let's be real though. With brain imaging, we will eventually be able to accurately detect lies. This is one of many ethically charged issues where dismissing it as unreliable/pseudoscience will only work for so long before one that actually works is built.
I'm not convinced this will ever be the case. Even if we were able to somehow discover a part of the brain that only ever activates when lying what happens when someone says something truthful while also thinking of a lie? What happens when someone technically tells the truth but omits critical information?
> With brain imaging, we will eventually be able to accurately detect lies.
That assumes that just because we have a distinct word for “lie” that that word has a clean direct correspondence with a detectable biological process.
You can get some info here: http://noliemri.com/