|
Technical details and clinical implications of contrast-specific imaging techniques |
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| 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 |
|
|
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| 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 |
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| Power Pulse inversion |
easy |
high |
low |
narrow |
colour |
harmonic |
yes |
yes |
yes |
| Power modulation |
easy |
high |
low |
narrow |
either |
fundamental |
yes |
yes |
yes |
Moir and Marwick Cardiovascular Ultrasound 2004 2:15 doi:10.1186/1476-7120-2-15 |
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