3-D may be next big thing, but it's harmonics for now.
Freiherr
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D000465:Algorithms; D004738:Engineering; D004867:Equipment Design; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods / Q000639:trends*; D012984:Software; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods / Q000639:trends