TABLE 3.
Comparison of Qualitative Analysis of Dynamic T1WI With Different Reconstruction Between Patients With and Without Transient Motion
| EAP | LAP | PVP | P | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
||||||
| Nontransient Motion | Transient Motion* | Nontransient Motion | Transient Motion* | Nontransient Motion | Transient Motion* | EAP | LAP | PVP | |
| Nongated 13.3-s | |||||||||
| Timing | 1.57 ± 0.65 (1.0–3.0) | 1.48 ± 0.49 (1.0–2.3) | 3.40 ± 0.72 (1.7–5.0) | 3.08 ± 0.48 (2.0–4.0) | 4.79 ± 0.34 (4.3–5.0) | 4.76 ± 0.32 (4.0–5.0) | 0.59 | 0.064 | 0.76 |
| Motion artifact | 3.29 ± 0.36 (2.7–4.0) | 2.87 ± 0.49 (2.0–4.0) | 3.31 ± 0.40 (2.3–4.0) | 2.85 ± 0.54 (1.7–4.0) | 3.35 ± 0.47 (2.3–4.0) | 2.97 ± 0.54 (2.0–4.0) | 0.001 | 0.001 | 0.005 |
| Streak artifact | 3.34 ± 0.38 (2.3–2.7) | 3.15 ± 0.43 (2.3–4.0) | 3.41 ± 0.41 (2.7–4.0) | 3.15 ± 0.38 (2.3–3.7) | 3.54 ± 0.33 (2.7–4.0) | 3.35 ± 0.40 (2.3–4.0) | 0.08 | 0.018 | 0.033 |
| Liver edge sharpness | 2.39 ± 0.46 (2.0–3.7) | 2.13 ± 0.35 (1.3–3.0) | 2.37 ± 0.44 (2.0–3.7) | 2.04 ± 0.44 (1.0–3.0) | 2.40 ± 0.49 (1.3–3.7) | 2.24 ± 0.39 (1.3–3.0) | 0.015 | 0.007 | 0.18 |
| Overall image quality | 2.73 ± 0.39 (2.0–3.7) | 2.38 ± 0.46 (1.0–3.3) | 2.73 ± 0.49 (2.0–3.7) | 2.32 ± 0.58 (1.0–3.3) | 2.90 ± 0.46 (2.0–3.7) | 2.63 ± 0.47 (1.7–3.3) | 0.003 | 0.005 | 0.31 |
| Gated 13.3-s | |||||||||
| Timing | 1.55 ± 0.56 (1.0–2.7) | 1.54 ± 0.48 (1.0–2.3) | 3.31 ± 0.45 (2.0–4.0) | 3.37 ± 0.39 (3.0–4.0) | 4.87 ± 0.20 (4.3–5.0) | 4.9 ± 0.14 (4.7–5.0) | 0.94 | 0.66 | 0.47 |
| Motion artifact | 3.75 ± 0.20 (3.0–4.0) | 3.48 ± 0.54 (1.7–4.0) | 3.69 ± 0.25 (1.0–2.0) | 3.57 ± 0.44 (2.3–4.0) | 3.84 ± 0.18 (3.3–4.0) | 3.74 ± 0.39 (2.3–4.0) | 0.03 | 0.42 | 0.18 |
| Streak artifact | 2.91 ± 0.34 (2.0–3.7) | 2.8 ± 0.38 (2.0–3.7) | 3.07 ± 0.30 (2.3–3.3) | 2.94 ± 0.41 (2.0–3.7) | 3.46 ± 0.35 (2.3–4.0) | 3.29 ± 0.39 (2.3–4.0) | 0.35 | 0.15 | 0.08 |
| Liver edge sharpness | 3.67 ± 0.37 (2.7–4.0) | 3.31 ± 0.73 (1.7–4.0) | 3.73 ± 0.38 (2.7–4.0) | 3.42 ± 0.68 (2.0–4.0) | 3.8 ± 0.32 (2.7–4.0) | 3.7 ± 0.42 (2.7–4.0) | 0.23 | 0.18 | 0.19 |
| Overall image quality | 3.77 ± 0.33 (3.0–4.0) | 3.44 ± 0.70 (2.0–4.0) | 3.88 ± 0.26 (3.0–4.0) | 3.60 ± 0.49 (2.7–4.0) | 3.95 ± 0.14 (3.3–4.0) | 3.83 ± 0.33 (3.0–4.0) | 0.08 | 0.02 | 0.25 |
| Gated 6-s | |||||||||
| Timing | 1.73 ± 0.34 (1.0–2.3) | 1.73 ± 0.38 (1.0–2.0) | 3.04 ± 0.21 (2.7–3.7) | 3.10 ± 0.20 (2.7–3.7) | 4.92 ± 0.13 (4.7–5.0) | 4.96 ± 0.10 (4.7–5.0) | 0.98 | 0.24 | 0.22 |
| Motion artifact | 3.7 ± 0.19 (3.0–4.0) | 3.43 ± 0.50 (2.3–4.0) | 3.68 ± 0.25 (2.7–4.0) | 3.5 ± 0.47 (2.3–4.0) | 3.78 ± 0.13 (3.7–4.0) | 3.7 ± 0.26 (3.0–4.0) | 0.024 | 0.15 | 0.12 |
| Streak artifact | 2.87 ± 0.42 (2.7–3.7) | 2.55 ± 0.49 (2.0–3.3) | 2.99 ± 0.40 (2.3–3.7) | 2.64 ± 0.39 (2.0–3.3) | 3.29 ± 0.42 (2.3–4.0) | 3.09 ± 0.38 (2.3–3.7) | 0.009 | 0.001 | 0.15 |
| Liver edge sharpness | 3.58 ± 0.42 (2.3–4.0) | 3.06 ± 0.72 (1.7–4.0) | 3.57 ± 0.36 (2.7–4.0) | 3.12 ± 0.70 (1.7–4.0) | 3.83 ± 0.29 (2.7–4.0) | 3.70 ± 0.42 (2.7–4.0) | 0.005 | 0.016 | 0.044 |
| Overall image quality | 3.49 ± 0.49 (2.3–4.0) | 3.06 ± 0.70 (1.7–4.0) | 3.54 ± 0.43 (2.3–4.0) | 3.19 ± 0.65 (1.7–4.0) | 3.70 ± 0.39 (3.0–4.0) | 3.44 ± 0.55 (3.0–4.0) | 0.007 | 0.036 | 0.08 |
Values are mean ± SD (range). P values indicate the difference between groups with and without transient motion on each phase.
*
One patient with persistent motion was included in this group. T1WI indicates T1-weighted image; EAP, early arterial phase; LAP, late arterial phase; PVP, portal venous phase.