When you explain mechanical index you listed that SPPA is closely related to the amount of cavitation occurring with beam. I was just a bit confused about that. I thought it was SPTA. I’m studying for my boards.
Hi! Good Question. The SPTA is the one you should remember for bioeffects - that has more to do with what the patient is exposed to over the duration of their exam. SPPA is important to mechanical indices/cavitation because it tells us the intensity of the pulse only part, which includes the *rarefaction* part of the wave. During rarefaction, bubbles expand and if the intensity of rarefaction is enough, the bubble can burst.
Prepping for my SPI, very happy I found this.
Very informative, amazing lecture.
Thanks 🙏 a lot.
When you explain mechanical index you listed that SPPA is closely related to the amount of cavitation occurring with beam. I was just a bit confused about that. I thought it was SPTA. I’m studying for my boards.
Hi! Good Question.
The SPTA is the one you should remember for bioeffects - that has more to do with what the patient is exposed to over the duration of their exam.
SPPA is important to mechanical indices/cavitation because it tells us the intensity of the pulse only part, which includes the *rarefaction* part of the wave. During rarefaction, bubbles expand and if the intensity of rarefaction is enough, the bubble can burst.
@@Sononerds Thank you! =)
hi thank you for te explanation and videos,do you any for echo?
Amazing