|
|
|
|
|
|
by TheOtherHobbes
32 days ago
|
|
|
It doesn't work unless it does. Until implies we're just waiting. Unless implies actual evidence, and - in medical procedures - some guarantee of safety. SF6 plus ultrasound is used to open the blood brain barrier. So if you're pumping a lot of ultrasound into a brain and using a lot of SF6, there are already risks. |
|
|