As we already know the biophysical effects of ultrasound are separated into thermal and nonthermal effects.
This post is fully concentrated on thermal effects safety aspects.The therapeutic heat during the ultrasound session in PE is of course the main effect what we are after.
Reaching inner penis temperatures of 39.7- 43.3 ⁰ C includes the risk of temporary overheating.
Therefor it is necessary to act cautiously when increasing the intensity of the application.
Managing safe application means also using the constantly moving transducer handling techniqueto avoid hot spots emerging.
The link provided below is for the review evaluating the risk exposure of the thermal mechanismfor ultrasound‐induced biological effects.
Safe exposure time calculations based on this study forms the time bracket not to exceedwith the given temperature, if we don´t like to take a increased risk on thermally caused cell
Degradation and cellular damage.
SAFE APPLICATION TIMES FOR GIVEN TEMPERATURE
Here T is in °C and application time t is in seconds, and for which there have been no significant
Adverse biological effects observed due to temperature values smaller than or equal seen in this
Chart.
T (°C)___t (sec)___T (°F)
46,0 _____7,5 ____114,8
45,5 ____10,6____113,9
45,0 ____15,0____113,0
44,5 _____21,5____112,1
44,0 ____30,7____111,2
43,5 ____42,5____110,3
43,0 _____59,0____109,4
42,5 ____119,0____108,5
42,0 ____238,0____107,6
41 5 ____ 476,0____106,7
41,0 ____ 950,0____105,8
40,5 ____1897,0____104,9
40,0 ____3785,0____104,0
For the reasons not excluded from penile heating circumstances it is recommendable that we
Should keep an extra safety margin within these limits above.
Despite having made a series of test runs measuring urethral temperatures the info we have on
Heating performance is not excluding the possibility of having hot spots elsewhere on the shaft.
We should also stay on the safe side keeping the ultimate safety limit at 45 °C not to exceed it in any circumstances.
Up to 45 °C the enzymatic and metabolic rates continue to increase and at 45 °C the adverse biophysical effects start to happen.
Especially seen after enzymatic reactions have reached the peak they start to rapidly decrease exceeding the threshold temperature.
Staying below this the penis has the natural ability also to cool down within the safety limits once the application has been removed.
The penis has the human body thermo regulatory mechanism kicking in resisting to easily exceed the mean temperature of 41 °C with 1.6 – 2.0 w/cm^2 applications stabilizing the temperature despite the occasional peaks. Thermally induced analgesic effect on nerves should also be taken in consideration during high risk-profile PE applications. There is controversial indications on studies concerning the analgesia. Some frequencies are known to non-thermally sensitize neural effects opposite to analgesic effect caused thermally.
If someone still not convinced about the safety of the non-thermal or thermal biophysical effects of ultrasonic application then he should use it having 4 days of rest between the applications.
It is the suggested time needed for non-mitochondrial cellular damages to heal.
If we are stupid enough to use the transducer stationary keeping it focused in one spot for extended times those may start to occur for sure.
If the damages emerge to happen at the mitochondrial level more time is needed and some portion of the damage could be irreversible.
All in all ,with the responsible and educated use the ultrasound is relatively safe with our application targeting the 39.7- 43.3 °C range of therapeutic heat.
As a summary doing everything patiently and respecting the risks, we are not going to accidentally cook our penises and drop them off well done.
The Risk of Exposure to Diagnostic Ultrasound in Postnatal Subjects
https://onlinel ibrary.wiley.co … m.2008.27.4.517
To be later continued with practical examples