s/n means serial number.
A serial number is required to track each device made by a manufacturer
for quality control, repair and recall purposes, required by the FDA.
This probe would plug in to a properly equipped Diasonics system.
If this is a CW Doppler (nonimaging) "probe" with just two transducers,
one for transmitting and one for receiving, it might not work on other
model ultrasound scanners of the same brand or on ultrasound scanners of a
different brand. The electrical impedance of the transducer must be tuned
to match the electrical impedance of the Doppler electronics, an
Diasonics probably purchased this "probe" from another company who also
supplies the other ultrasound instrument manufacturers. This is called an
OEM device (original equipment manufacturer). Other OEM devices in your
ultrasound scanner are the video monitor on top (probably made by Ball)
the VCR inside (probably made by Sony or Panasonic), the printer .....
If this is a phased array or linear array 2-D imaging "probe" (scanhead),
then it is likely that it will not work on another instrument, both
because of the impedance problem and because the wiring of each scanhead
I have seen one manufacturer of ultrasound scanheads who makes inexpensive
linear array and phased array scanheads for the popular ultrasound
scanners. They figure out the wiring and impedance required for each
commercial scanner, and copy it. It is hard to bootleg such scanheads.
Although a scanhead may cost $ 7,000 which seems like a lot, the parts are
very expensive. The cable (with 128 coaxial conductors) costs $ 1,000 OEM
to the company. (don't damage it). To wire the cable takes a worker all
day. And you haven't even started to make the transducer array.
A company typically expects to charge 5 to 10 times the manfuacturing cost
of a device to pay for engineering and administration.
A used CW 10 MHz "probe" is probably worth about $ 10.
A used 10 MHz 2-D scanhead, in perfect working condition, is probably
worth $ 500 to $ 1000 to a person that needs it and has a compatable
Sorry to go on so long.
I just couldn't stop typing.
On Thu, 20 May 1999, madamalto wrote:
> hi...sorry for the sketchy information regarding the 10MHz probe but i'm
> afraid i have little new information other than it is a Diasonics 10 MHz
> probe with "s/n1648R" labeled on it.(i have no idea what that
> means)......contact me if interested........my address is:
> [log in to unmask]
> thank you, patricia f. powers, rvt