Table 2.
Pearson’s correlation coefficient (r) between the change in subharmonic signal and change in portal vein pressures when data from the Gelfoam and AV-fistula models were combined (n = 11)
| Transmit Cycles | Incident Acoustic Power (%) | Subharmonic amplitudes from MIP image (SHMIP) | Subharmonic amplitudes from mean signal of all frames (SHAll_Frames) | ||
|---|---|---|---|---|---|
|
|
|
|
|||
| r | p-value | r | p-value | ||
| 3 | 20 | -0.53 | 0.094 | -0.54 | 0.090 |
| 3 | 40 | -0.56 | 0.071 | -0.52 | 0.103 |
| 4 | 20 | -0.72 | 0.013 | -0.70 | 0.017 |
| 4 | 40 | -0.70 | 0.016 | -0.73 | 0.011 |