Table 2.
Indicate lesion type and mean ± standard deviation apparent diffusion coefficient (ADC) values by using different b value combinations before and after the gadolinium based contrast agent administration (G-CA).
| b Value Protocol | Tissue type | |||||||
|---|---|---|---|---|---|---|---|---|
| Malignant (N = 25) | Benign (N = 7) | |||||||
| Pre-G-CA (x 10−3 mm2/s) | Post-G-CA (x 10−3 mm2/s) | Mean change (%) | r/P | Pre-G-CA (x 10−3 mm2/s) | Post-G-CA (x 10−3 mm2/s) | Mean change (%) | r/P | |
| ADC0,200,400,600,800 | 0.93 ± 0.28 | 0.92 ± 0.28 | −1.60 ± 4.51 | 0.975/0.042 | 1.47 ± 0.25 | 1.46 ± 0.30 | −1.49 ± 5.07 | 1.00/ns. |
| ADC400,600,800 | 0.76 ± 0.24 | 0.76 ± 0.27 | 0.21 ± 13.3 | 0.902/ns. | 1.25 ± 0.17 | 1.30 ± 0.33 | 3.23 ± 15.80 | 0.857/ns. |
| ADC0,200,400 | 1.12 ± 0.34 | 1.08 ± 0.28 | −1.43 ± 8.61 | 0.947/ns. | 1.71 ± 0.34 | 1.62 ± 0.29 | −4.73 ± 5.46 | 0.750/ns. |
| ADC0,200,800 | 0.92 ± 0.28 | 0.90 ± 0.27 | −1.57 ± 4.64 | 0.969/0.040 | 1.45 ± 0.24 | 1.44 ± 0.30 | −1.50 ± 6.00 | 1.000/ns. |
| ADC0,400,800 | 0.94 ± 0.28 | 0.92 ± 0.27 | −1.36 ± 4.82 | 0.970/ns. | 1.48 ± 0.25 | 1.46 ± 0.30 | −1.79 ± 5.61 | 0.964/ns. |
| ADC0,200 | 1.25 ± 0.37 | 1.23 ± 0.30 | 0.40 ± 9.60 | 0.925/ns. | 1.87 ± 0.35 | 1.78 ± 0.34 | −4.62 ± 4.55 | 0.929/ns. |
| ADC0,800 | 0.94 ± 0.28 | 0.92 ± 0.27 | −1.36 ± 4.82 | 0.970/ns. | 1.48 ± 0.25 | 1.46 ± 0.30 | −1.79 ± 5.61 | 0.964/ns. |
| ADC200,800 | 0.73 ± 0.23 | 0.69 ± 0.23 | −3.32 ± 24.0 | 0.875/ns. | 1.17 ± 0.18 | 1.19 ± 0.35 | 0.31 ± 20.8 | 0.929/ns. |
ADC = Apparent Diffusion Coefficient; G-CA = gadolinium based intravenous contrast agent; Pre-G-CA = measurement before the intravenously administered contrast agent; Post-G-CA = measurement after the intravenously administered contrast agent.