Table 1.
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 |