| 释义 |
microbubbleenUK
mi·cro·bub·ble M0271525 (mī′krō-bŭb′əl)n. An extremely small bubble, usually only a few hundred micrometers in diameter, that can be uniformly suspended in a liquid such as blood.microbubbleenUK
microbubble (mī'krō-buhb'bel), A vascular contrast material for ultrasound, air stabilized within some kind of membrane, such as a surfactant, like a tiny soap bubble, which gives marked reflections of the signal at higher harmonic frequencies; the size (1-7 mcm) works well in the useful diagnostic frequency range of ultrasound (2-10 Hz).
See also: pulse-inversion contrast harmonic imaging. |