that means it's good for measuring or acquiring images of the brain but not so good if you want to for example do cardiac imaging which you see here so if you look at these cardiac images which you see on this particular slide this looks like it's one single heartbeat but unfortunately mr imaging is not fast enough to acquire this so what you typically do is you measure with an ECG in which actor in which state the heart is and then I'm actually taking bits of data from different heartbeats and I'm assuming that if my ECG signal shows me