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Table 1 Technical details and clinical implications of contrast-specific imaging techniques

From: Combination of contrast with stress echocardiography: A practical guide to methods and interpretation

High Power Intermittent Imaging Acquisition difficulty Amount of contrast used Amplitude of micro-bubble backscatter Dynamic range Greyscale or colour Processed Backscatter Myocardial perfusion Wall motion Artefacts
Tissue Harmonic Imaging challenging low high wide grey harmonic yes no yes
Ultraharmonic challenging low high wide grey harmonic yes no yes
Pulse inversion challenging low high wide grey harmonic yes no yes++
Harmonic Power Doppler challenging low high wide colour harmonic yes no yes
Low Power Continuous Imaging          
Power Pulse inversion easy high low narrow colour harmonic yes yes yes
Power modulation easy high low narrow either fundamental yes yes yes