871–880 of 927 posts
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Not a physician. Some observations on these statements. The predicate is "given how we practice medicine and the limits of humans ability to interpret the imaging modalities we have." The more specific predicate is "for my specialty would this replace or prove superior to the tools that I have?" Both of these are totally reasonable, however the history of medicine, and science in general, is that creating new ways to…
It's true that sometimes deeply experienced professionals are less likely to discover or accept novel methods based on new approaches or technologies. Unfortunately, in this case MJ's proposed product is being deceptively presented to appear as if it's the kind of bold new approach we all hope to see in medicine - but it's not. It's a repackaging of an existing product that's already on the market. MJ is buying the t…
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> I would love to see some of the raw imaging data Just look at images from the Butterfly IQ3 handheld ultrasound device which has been on the market a while ( https://www.butterflynetwork.com/iq3 ). Midjourney is repackaging 40 of the exact same chip around a big, non-contact ring. Since MJ is placing the devices 200 to 400 times farther away from your organs and sending sound waves through a large volume of water b…
Given that current ultrasound probe technology (including butterfly) relies on the probe being essentially in contact with the tissue being imaged, it’s hard to imagine how this set up can be effective with the imaged volume so far from the transducers, since there will be a huge amount of dissipation in the water bath, but maybe they have found a way to solve that? Also, I imagine that the quality of the images, suc…
I've been looking up relevant data and reading some papers to determine if I'm missing something there but, so far, the approach looks pretty much 'all downside' with the few upsides being: 1. Faster to image full body, 2. Don't have to have some technician poking you with an ultrasound wand, 3. Looks cool?
But I'm just an imaging and DSP guy, you're the actual radiologist. If you don't mind there's one question I'm not sure about. Trying to 'strong-man' the product concept, the only potential benefit of the approach I haven't crossed out is if there's any meaningful value from having additional simultaneous receivers off-axis from the emitter? I mean value which can't be gained from just moving a single emitter to another axis, grabbing more images and then cross-registering those. Even then, the off-axis receivers are always co-planar with the emitter, which seems like it would greatly limit any utility.
The downside column I've got so far is vast... and it's not just distance, there's also the turbulance in the water, micro-bubbles from the ongoing submersion of body and platform into the tank, the thermal disruption at the boundary layer, the fact the human is freestanding with no support while being submerged means they'll be far less stationary than a human comfortably reclined on a ultrasound table, it goes on and on.
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It is in fact very probably a bad idea. A good search term here is "incidentaloma". The balance of evidence currently appears to suggest that full body scans for asymptomatic patients are a net negative for health.
How brainwashed by the healthcare machine do you have to be to think that catching asymptomatic medical issues is a bad thing? The argument against is literally: - patients will worry too much, and - it will cost time and money to investigate. Both spurious rationales cooked up by an industry that is at least as hostile to humanity as it is helpful.
- patients will worry too much, and - it will cost time and money to investigate.
you forgot one more, which is subjecting people to potentially risky procedures for things that were not a health risk in the first place.
Some initial thoughts as a practicing radiologist: - This looks really cool and I hope they keep innovating on this. I love seeing new modalities develop and despite my (many) reservations and criticisms, if even one good use case comes out of it that truly helps people, it's tech money well spent imo. - They show the reconstructed images as though they are a low resolution CT, and promise that quality will improve a…
> The brain is encased in bone, so you might get some penetration but it will be very limited. Radiologist as well. Remember this is full wave inversion not pulsed wave B mode. You can get much more useful information from both high low frequency and capture transmitted waves. There is promise with this and we use it for example with MRgFUS. With advanced computational models or patient specific CT/ZTE MR aberration…
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"the people can't be trusted with knowledge" is a bad argument we don't need to do much differently to take advantage of this data anyway. doctors already ask patients what changed recently collect data passively. when a medical condition arises, you have a data source to correlate against the onset of the condition currently we have almost no data, so doctors need to run multiple tests to identify possible causes
> we don't need to do much differently to take advantage of this data anyway. doctors already ask patients what changed recently So your take is we just do the testing and ignore it's outputs entirely, until something comes up? And that is somehow different and better than current imaging processes? > currently we have almost no data This is absolute fucking nonsense.
1/ telemetry is operationally useful in systems engineering 2/ the human body is a system 3/ this is a step towards telemetry for the human body
> currently we have almost no data
this is accurate. ordinary people might get blood drawn once per year. that is almost no data, relative to a monthly or weekly full-body ultrasound
This seems to imply that there is an LLM layer involved. Which means hallucinations. No thanks.
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I appreciate your feedback, I did not dig through their comment history to make that discovery, but saw someone showing full trust in a random user on an anonymous forum and wanted to encourage more critical behavior.
I get the intention, but you made an assumption that the person you replied to didn’t spend 30 seconds find some more supporting evidence before they made their post. But as far as trust goes, Hacker News has historically been a fairly high trust community. LLMs have the potential to change this dynamic, but I don’t think encouraging people to assume that every post is an LLM is helpful. I don’t think a community wit…
Some initial thoughts as a practicing radiologist: - This looks really cool and I hope they keep innovating on this. I love seeing new modalities develop and despite my (many) reservations and criticisms, if even one good use case comes out of it that truly helps people, it's tech money well spent imo. - They show the reconstructed images as though they are a low resolution CT, and promise that quality will improve a…
> The brain is encased in bone, so you might get some penetration but it will be very limited. Radiologist as well. Remember this is full wave inversion not pulsed wave B mode. You can get much more useful information from both high low frequency and capture transmitted waves. There is promise with this and we use it for example with MRgFUS. With advanced computational models or patient specific CT/ZTE MR aberration…
Pedantry appreciated.
Some initial thoughts as a practicing radiologist: - This looks really cool and I hope they keep innovating on this. I love seeing new modalities develop and despite my (many) reservations and criticisms, if even one good use case comes out of it that truly helps people, it's tech money well spent imo. - They show the reconstructed images as though they are a low resolution CT, and promise that quality will improve a…
I do a lot of MRI analysis including segmentation of small structures in the hippocampus called the hippocampal subfields. To collect these segmentations, we collect partial-field-of-view high in-plane resolution T2-weighted images on a 3 or 7 Tesla magnet. These sequences are generally only included in research protocols if the research specifically cares about hippocampal subfields...therefore they are rarely colle…