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I have a question: In radio we are seeing phased arrays and software defined systems becoming more popular. Why can't we expand the resolution and increase th
by aeonik 3y ago
I have a question:
In radio we are seeing phased arrays and software defined systems becoming more popular.
Why can't we expand the resolution and increase the bandwidth with ultrasound as well using the same ideas.
Wouldn't we be able to get a more clear tomographic pictures if we used many receivers places around the body and layered different frequencies? I'm especially wondering why not use lower frequencies for deeper penetration, using phased arrays to offset the loss in resolution.
- natsucks 3y agoA key advantage of US over other imaging modalities is portability. A key disadvantage is resolution with depth. Tomographic ultrasound systems exist, but if one is going to go with a bulky machine you might as well go with CT or MRI.
- dotancohen 3y agoFor what procedures are the current resolution limitations inadequate? What would be the cost difference towards a machine that provides adequate resolution?
- aeonik 3y agoI'm envisioning something more like continuous monitoring electrodes. Low amplitude, high bandwidth, always on.