Aplio - Dynamic and Advanced Dynamic Flow

There are a number of problems in contrast imaging using LevovistTM contrast agent. In Doppler mode, the problems are poor resolution and large areas of blooming. In 2nd harmonic imaging and pulse inversion imaging, there are problems related to tissue harmonic imaging (THI) because Levovist requires a high mechanical index (MI). THI increases under high-MI conditions, and THI interferes with contrast imaging using Levovist. In addition, the bubbles in Levovist readily collapse under high-MI conditions making it difficult to visualize the bubbles in successive frames.

Fig. 2: Clinical examples of non-contrast applications. All of these images...
Fig. 2: Clinical examples of non-contrast applications. All of these images were obtained without the use of contrast agent

This article was first published in the VISIONS, issue 3/2002, a publication of Toshiba Medical Systems


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