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How much is the lifespan of an ultrasound transducer?

I am thinking of buying used ultrasound machine, so I was wondering..Google says around 10 years for crystals and 3-5 years for mechanical transducers. Is that true?

Georgi Petrov

1 month ago

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wendy226
wendy226

The first piece of equipment I bought when I went into private practice was an ultrasound machine. That was in 1980 and it is still going strong. I have a calibrated water balance and it still works to the original specs. We are also very careful with the heads and take care they are not knocked or dropped!

vetphysio.herbots113
vetphysio.herbots113

Thank you Tim for your contribution

KR Patrick

Prof Tim Watson
Prof Tim Watson

there used to be a very low cost water balance available (about 50 pounds GB) but I could not find it when I looked the other day. If I find anyone who still supplies it, I will post here.

gvpetrov223
gvpetrov223

I tried the thing with the water and it worked and was kinda fun to show it to a patient. Thanks for that and for the links. 225 pounds is not cheap price in Bulgaria though.

Prof Tim Watson
Prof Tim Watson

we use some equipment to test devices in the lab which is fairly expensive so would not be in routine use. There are some small and low cost ways to do a basic test using a 'water balance' indicator (I will paste example link below) but these will only give you and indication of approximate output - you will know if your device is working and in the right general power level but I would not count as accurate. Simplest way to test output - at zero cost - is to immerse ultrasound transducer in bowl of water, turn applicator face up towards the surface, put machine on continuous output, turn up to say 1.0 W cm^2 and if it is giving an output you will see water surface ripple/disturbed. Gives no indication of accuracy, but at least you will know whether something is happening and therefore whether some output. Examples of high cost water balance test kit: http://www.acoustics.co.uk/product/radiation-force-balance/ http://www.emsphysio.co.uk/product/precision-ultrasound-balance/

Low cost units such as: http://www.emsphysio.co.uk/product/budget-ultrasound-output-indicator/

Not sure which country you are based in - might make a difference

gvpetrov223
gvpetrov223

Well, I am not shure where I can test the machine in my country. Is there any easy way to do that without special equipment?

Prof Tim Watson
Prof Tim Watson

So long as they are looked after and (calibration) tested to be sure that they are functioning properly, they can last a lot longer. I was using a device manufactured in 1990 the other day and the transducer was delivering perfectly good ultrasound and was spot on when I checked the calibration. One of the things that seriously reduces life span is 'knocking' the transducer - so being careful does pay off. I am sure that some of the manufacturers might have a technical view - let's see if anybody comes up with anything

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