From the article it sounds like better devices are available, it's just that they cost a lot of money ($100/day rental, it says) and need electricity to run. Fo

From the article it sounds like better devices are available, it's just that they cost a lot of money ($100/day rental, it says) and need electricity to run. For this reason it might never be considered ethical to test it in a richer country where those expensive devices are available. For a poorer country where the expensive alternative is not an option things may be different though.