From hand-rotated multiplane transesophageal to fast-rotating parasternal probes for cardiac imaging

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Abstract
Trans-Esophageal Echocardiographic probes were introduced around 1982. The development ranges over the years from single plane, phased array transducers at low frequency to today's multiplane probes with a large number of elements. Further miniaturization and higher frequencies allow paediatric applications. Recent development includes a probe with 48 elements at 7 MHz with a shaft diameter of only 5 mm.

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