Murray Meehan's Blog
Friday, February 15, 2013
Tuesday, December 18, 2012
I might not get what I want, but I guess I got what I need. (Ultrasound reading notes)
Do you ever wonder how medical ultrasound scanners work? Because I sure did. I still do, actually, and I've taken a course describing the subject and I've been reading and ebay-browsing all night on the subject. Here are a few points of general interest that I've discovered.
- Some ultrasound components can also be used for making pain field generators (2). Allegedly.
- The cheapest medical ultrasound transducers on the market are all endocavity probes. That means they get shoved inside you, one way or the other. (there are actually 3 common ways, and that does not vary by gender. Sorry.). I've recently seen some things I wish I could un-see. Things that I'm too kind to link to here. But since you're a curious reader, here's a fun fact from our friends at CIVCO: ”Recommended for every transrectal and transvaginal scanning procedure, CIVCO's endocavity covers are available in sterile and non-sterile ”
- Medical ultrasound scanners operate (on the transducer side anyhoo) at very high power levels that I don't trust myself with, so I'm building something very scaled down for the time being.
Monday, December 3, 2012
Choosing a sensor for my Ultrasound Scanner project
I need help choosing a sensor for my ultrasound/sound sensor project. I need a sensor which is cheap, because this is a personal project, and I want one which could work in a B-mode ultrasound scanner. Those goals are probably mutually exclusive, but I think I can find something better than my current sensor, Digikey's "SPM0404UD5", the only US sensor I found for sale in small quantities. Any suggestions would be appreciated.
Reading material suggestions for someone hoping to build a B-mode ultrasound scanner would also be great. I doubt there's a good book addressing this exact task, but I'd be happy to be proven wrong.
Below is a description of my project goal, my background, and my very early design of my project.
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