5 points
The lung motion is be a problem but it is still done in some situations and the radiologist just tries their best with any motion artifacts. Since the blood vessels are so big in the chest it kind of works out, but it turns out better with contrast.
3 points
I see. I started reading this article which describes a whole host of different techniques. It really seems to be exploiting the physics of NMR to get this enhancement (or deficit), along with the image processing. It’s really interesting but I’d need a while to get my head around it.
