| Pulse Duration | Microseconds (∼1–5 µs typical) | Microseconds to milliseconds (short bursts for mechanical disruption) |
Its kind of hard to know what this means - some of the numbers seem pretty close/crossover - but I don't think saying the difference is akin to a laser and a light.
Please don't be sarcastic for a possibility genuine question. It contributes to alienating the askers, not to mention the risk of some taking it quite literally.
That's like asking how if a laser can cut through steel how lamps can be safe to have indoors.
Do you have a link or something that compares the power in both? I can't find one.
This is the summary I get from chatgpt - comparing Histotripsy and ultrasound imaging
| Property | Strongest Diagnostic / Imaging Ultrasound | Histotripsy (Therapeutic Ultrasound |
| Frequency | 2 – 10 MHz (obstetric: 2–5 MHz; high-res imaging up to 15 MHz) | 0.25 – 3 MHz (sometimes up to 6 MHz) |
| Pressure (Peak Negative) | Up to ~5–6 MPa (mechanical index limit ≈ 1.9) | 10 – 100 MPa (depending on type: intrinsic vs. boiling histotripsy) |
| Intensity (Spatial Peak, Temporal Average) | Typically < 0.1 W/cm²; upper safe limit ≈ 0.72 W/cm² (FDA/AIUM) | 100 – 10,000 W/cm² (very high peak intensities) |
| Pulse Duration | Microseconds (∼1–5 µs typical) | Microseconds to milliseconds (short bursts for mechanical disruption) |
Its kind of hard to know what this means - some of the numbers seem pretty close/crossover - but I don't think saying the difference is akin to a laser and a light.
There are 2 to 5 orders of magnitude difference in intensity. That alone is a pretty big difference.
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You can vary the frequency, power, energy, focus... is not the SAME ultrasound.
But surely it could cause some damage at a lower frequency, power, etc anyway?
Shit, you figured it out. It's not! That's whats been causing all the autism! Big ultrasound has been managing to keep this under wraps for decades!
Please don't be sarcastic for a possibility genuine question. It contributes to alienating the askers, not to mention the risk of some taking it quite literally.