On: Mass spectrometry method identifies pathogens within minutes instead of days

[stonemetal12]

MRI machines cost up to 0.5 million, and take more than minutes for a scan. So this is in the upper realm of reasonable. At this point it is an engineering problem to get costs down.

[mattkrause → stonemetal12]

A good MRI machine is way more than $500k!

[westurner → stonemetal12]

There are 0.05 Tesla MRI machines that almost work with a normal 15A 110V outlet now FWIU; https://news.ycombinator.com/item?id=40965068 :

> "Whole-body magnetic resonance imaging at 0.05 Tesla" [1800W] https://www.science.org/doi/10.1126/science.adm7168 .. https://news.ycombinator.com/item?id=40335170

Other emerging developments in __ spectroscopy:

/?hnlog Spectro:

NIRS;

> Are there implied molecular structures that can be inferred from low-cost {NIRS, Light field, [...]} sensor data?

NIRS would be low cost, but the wavelength compared to the sample size.

From https://news.ycombinator.com/item?id=38528844 :

> "Reversible optical data storage below the diffraction limit (2023)" [at cryogenic temperatures] https://news.ycombinator.com/item?id=38528844 :

> [...] have successfully demonstrated that a beam of light can not only be confined to a spot that is 50 times smaller than its own wavelength but also “in a first of its kind” the spot can be moved by minuscule amounts at the point where the light is confined.

"Eye-safe laser technology to diagnose traumatic brain injury in minutes" https://news.ycombinator.com/item?id=38510092 :

> "Window into the mind: Advanced handheld spectroscopic eye-safe technology for point-of-care neurodiagnostic" (2023) https://www.science.org/doi/10.1126/sciadv.adg5431

> multiplex resonance Raman spectroscopy

Holotomographic imaging is yet another imaging method that could be less costly than MRI; https://news.ycombinator.com/item?id=40819864

"Quantum microscopy study makes electrons visible in slow motion" https://news.ycombinator.com/item?id=40981054 :

> "Terahertz spectroscopy of collective charge density wave dynamics at the atomic scale" (2024) https://www.nature.com/articles/s41567-024-02552-7