Hacker News Reader

theglocksainton Ultrasound is ushering a new era of surgery-free cancer treatment

Gamma Knife is used in brain lesions where focused ultrasound is not a viable treatment option or likely to ever be.

theglocksainton Ultrasound is ushering a new era of surgery-free cancer treatment

Proton therapy offers incremental, if any advantage, over standard IMRT for non-pediatric cases. In the case of the prostate, recent evidence shows no benefit at all. It suffers from near hyperbolic marketing from debt-ridden therapy centers pushing dubious claims that are now being exposed by high quality phase III comparison trials.

HIFU for prostate also is a ripe area for grifters as it is advertised and marketed towards low risk cases that would probably benefit from active surveillance.

theglocksainton The Therac-25 Incident (2021)

Don't know how to break this to you but they all are nowadays.

theglocksainton What If the Real Power of MRI Isn't in the Image at All?

Non-Cartesian sampling of k-space is routinely used today in clinical practice and the reconstruction time or resources isn't a limiting factor. It is the reduced SNR among other effects that is limiting in these approaches.

If one MRI scanner can be more efficient, there is enough competition in the market for it to be wildly successful. The major vendors have enough technical parity for efficiency to be a key difference maker. Hospitals and health systems are the customer and they need throughput.

theglocksainton What If the Real Power of MRI Isn't in the Image at All?

I'm not sure what the point this article is trying to make. The image isn't the data for a lot of imaging modalities. The process of image reconstruction is translation from raw signal to image in any modality.

Gaining access to raw data is difficult. For example, if I want access to raw projection data on CT, it requires specific research keys and agreements with the vendor. A typical end user, like a hospital, cannot get to this raw data as part of a standard purchase.

theglocksainton Handheld detector for all types of ionizing radiation improves radiation safety

Shielding is not a crude term, it is indeed used as technical language in the world of radiation safety. You are also using the term attenuation incorrectly, as sibling comment points out.

theglocksainton Tailscale has raised $160M

The subnet routing feature can cause network issues

theglocksainton Elizabeth Holmes found guilty

Really? What about the literal stalking by her legal team? Two people directly involved in the company were suicidal due to the environment she created, one of whom did end up committing suicide.