Hey guys, I’ve used the ultrasound unit for a while now and have some thoughts to add.
So far I have done extending and hanging while ultrasound heating the shaft. And I have done manuals and pumping while ultrasound heating between sets. I haven’t measured, nor done much beyond casual testing, but the internal heat levels are excellent. The real trick to it is finding ways of applying PE forces while also being able to keep an ultrasound transducer constantly moving over a lubed penis. I may eventually pick up a PM Pro attachment since it looks like it covers less of the shaft than the VH3 cone I currently use.
I agree with Manko’s temperature numbers in that ultrasound heat causes a higher internal tissue temperature than an IR lamp. Doing PE in a hot tub is the only thing that could reach the same temperatures. I’ve never had my own hot tub or had a situation private enough to do PE in a hot tub (at least that I dared). But several big gainers did it.
Ultrasound heating comes with a mandatory safety warning. I studied a lot about ultrasound before using it the first time, and had to learn some things I didn’t know about the physics of sound. You should study it too. You can seriously injure yourself by pointing an ultrasound transducer at the wrong tissues. You should not point it at any organs. And definitely not the testicles, eyes, heart, or brain. It can be used on muscles, connective tissues, joints, bones, and blood vessels - which includes the penis shaft but NOT the testes.
The other absolute key things that anyone must know to use ultrasound heating is that it needs a contact medium. Ultrasound gel works. So does water based lube. So does vaseline.
You must keep the transducer head constantly moving around the penis surface while in contact with the medium. Keeping the transducer in motion makes sure the sound energy is distributed evenly throughout the tissues and not concentrated into one point (which can cause a burning sensation).
Like anything it can be overdone. Not only are sound waves being converted into heat energy, they are also micro-vibrating the tissues. I do it about 20 minute maximum. I think it could be done twice a day like that although I haven’t tried it.
Here is a guide to ultrasound therapy:
Some other resources that helped understanding and application:
Using Ultrasound as a Therapeutic Modality – Human Kinetics
Overview of Therapeutic Ultrasound Applications and Safety Considerations
https://www.res earchgate.net/p … n_physiotherapy
https://www.jos pt.org/doi/pdfp … t.1995.22.4.142
Three-MHz Ultrasound Heats Deeper Into the Tissues Than Originally Theorized - PMC
The unit I have has 1 Mhz and 3 Mhz settings each with adjustable power output from 0 to 2.0 w/cm2. I tested the full power range at each frequency setting.
My findings are consistent with this quote from the last study linked above, and quoted below. In other words, the 1 Mhz did not effectively heat the tissue, but the 3 Mhz does.
Quote
Using the ultrasound device studied here, continuous 1.5-W/cm2 ultrasound treatment for 10 minutes at a frequency of 1 MHz produced neither vigorous heating (increase of 4°C) nor an absolute tissue temperature of 40°C in tissues at a depth of 2.5 cm (Table, Figure). On the other hand, 3-MHz ultrasound produced both vigorous heating (increase of 4°C) and an absolute intramuscular tissue temperature in excess of 40°C at a depth of 2.5 cm. Vigorous heating (increase of 4°C) was achieved at an average of 3.35 ± 1.23 minutes, whereas absolute intramuscular tissue temperature of 40°C was accomplished at an average of 4.13 ± 1.69 minutes with 3-MHz ultrasound. Thus, the rate of heating with a frequency of 3 MHz was 1.19°C/min at a depth of 2.5 cm.
Additionally, I found 1.5 w/cm2 at 3 Mhz to be approximately the maximum comfortable setting. Above that, I begin to feel "micro burns" if I slow down the motion of the transducer head at all. It registers similar to a shock sensation, but I believe what’s happening is a localized point where overlapping wave patterns all hit the same point and temperature spikes causes an internal burn sensation. So to answer the question can you cook your unit with ultrasound, yes I think so, in the form of these micro burns. So 3 Mhz at 1.5 w/cm2 is the cutoff point for me, where I get the best heating rate possible without micro-burns (at least as I interpret them).
My unit also comes with two transducer heads, one with effective radiating area (ERA) of 1 cm2 and another with ERA of 5 cm2. Higher ERA is more total power output. I’m using the 5 and the 1 does not effectively heat for me. So doing the math, my favorite heating rate is 3 x 1.5 x 5 = 22.5 which I think is in watts.
I think the ideal transducer head size for my girth with be 3 or 4 cm2 which would then need a higher power output to get the same heating wattage.
I’d recommend anyone looking to try this heating method go with a unit that has similar total power output levels, i.e. roughly 20 watts total when you multiply out the ERA x Frequency x Power output, while also having a transducer head size that is not larger than your penis width.