Hacker News Reader

Comment by foobarbecue | Hacker News Reader

300 to 700 micrometers? So almost nothing to still almost nothing.

Could anyone tell a difference in the before and after images, other than one was grey and the other was blue? Structurally, they looked identical to me.

Edit: internet tells me human cells are around 25um, so I guess you can tens of cells deep

View on HN

I think this is just one "slice" of a full scan. The one in blue has a lot more detail, and less noise.

Does it? I zoomed in on my phone as far as it would go, and could still barely tell the difference. Unfortunately the difference in hue makes it harder to tell if there's any actual difference, because it swamps everything else.

Since they claim a more-than-doubling of visibility depth over SoTA, I'm surprised they didn't pick a visual that demonstrates that quite radical improvement, over the apparently marginal improvement in resolution at depths which can already be managed.

I also didn't distinguish any difference, don't see how the choice of color improves the visualization. Honestly it comes across as a bit deceptive.

The blue one is pretty significantly less noisy, and the animation showing the two 3D reconstructions is much clearer. The noise reduction probably has a lot to do with that.

It allows you to study things in-situ that are just under the skin without opening things up. Useful!

Radiologists spend 12 years studying to be able to interpret imaging - as a lay person who has spent half that duration looking at scans most days, I still can’t really form any sort of accurate picture of what’s going on.

Radiologists probably like the gray noisy image better anyways!

I have a suspicion that radiologists themselves may not know what's going on. Essentially if you give a scan (with cannot be easily interpreted by a semi-trained layman) to more than one radiologists, you may get several different interpretation.

Can some radiologist reading this confirm what I'm saying?

Yeah this isn't replacing MRI anytime soon.

Reply on news.ycombinator.com