3 ms·
You know slightly different NMR machines are used to scan entire humans, right? They only really differ in scan pattern for this aspect. That's IIUC just a soft
by namibj 1y ago
You know slightly different NMR machines are used to scan entire humans, right?
They only really differ in scan pattern for this aspect. That's IIUC just a software change.
- holowoodman 1y agoAfaik not really. The ones that scan humans are tuned for a specific proton resonance frequency, so they basically measure hydrogen density. But you get a 3D-Plot because they do a computed tomography of that density. The chemistry NMRs are spectrographs, so you dial through a whole frequency spectrum and look at the reflected/transmitted signal. With that you get different peaks for different nuclei plus some deviations for crystal or molecular structure. But I have to admit, that I'm a little rusty on that topic, so you might be right anyways.
- namibj 1y agoYeah right I looked again and also: MRI doesn't really work for highly conductive (bulk) samples: you can't get the RF in/out of the conductor due to skin effect. Also proton frequency only....