20 June 2020: Clinical Research
Detection of Dysplastic Liver Nodules in Patients with Cirrhosis Using the Multi-Arterial CAIPIRINHA-Dixon-TWIST-Volume-Interpolated Breath-Hold Examination (MA-CDT-VIBE) Technique in Dynamic Contrast-Enhanced Magnetic Resonance Imaging
Ling Fei Guo 1ABCDE , Guihua Gao 2BDF , Zhenguo Yuan 1ADG*DOI: 10.12659/MSM.922618
Med Sci Monit 2020; 26:e922618
Table 1 The scanning parameters of routine sequences and multi-arterial CAIPIRINHA-Dixon-TWIST-volume-interpolated breath-hold examination (MA-CDT-VIBE).
| Parameters | T2 WI | DWI | Positive/negative phase* | Before contrastCD-VIBE | MA-CDT-VIBE | Portal venous phaseCD-VIBE | Delayed phaseCD-VIBE |
|---|---|---|---|---|---|---|---|
| Orientation | COR | TRA | TRA | TRA | TRA | TRA | TRA/SAG/COR |
| Sub-phase (No.) | 1 | 1 | 1 | 1 | 5 | 1 | 1 |
| TR/TE (ms) | 3500/87 | 4800/64 | 244/2.38 | 6.75/3.39 | 6.59/2.39 | 6.75/3.39 | 6.75/3.39 |
| Flip angle (degree) | 160 | – | 70 | 10 | 10 | 10 | 10 |
| FOV (mm) | 380 | 380 | 380 | 380 | 400 | 380 | 380 |
| Basis resolution | 256 | 134 | 256 | 320 | 256 | 320 | 320 |
| Spatial Resolution | 1.5×1.5×6.0 | 1.4×1.4×6.0 | 0.7×0.7×6.0 | 1.2×1.2×3.0 | 0.8×0.8×3.0 | 1.2×1.2×3.0 | 1.2×1.2×3.0 |
| Temporal resolution | – | – | – | – | 2.8 s | – | – |
| Slice number | 26 | 26 | 30 | 72 | 72 | 72 | 72 |
| Slice thickness (mm) | 6 | 6 | 6 | 3 | 3 | 3 | 3 |
| Slice gap (%) | 20% | 20% | 20% | 20% | 20% | 20% | 20% |
| Acquisition time | 135 | 179 | 20 | 18 | 20 | 18 | 18 |
| Breathe patterns | Free breath | Free breath | Hold breath | Hold breath | Hold breath | Hold breath | Hold breath |
| K space A/B (%) | – | – | – | – | 20/25 | – | |
| TR – repetition time; TE – echo time; FOV – field of view. A – the center of the imaging region. B – the periphery of the imaging region. * Indicates that after a positive/negative phase sequence was scanned, it acquired the positive phase image and negative phase image, including 30 image in each atlas. | |||||||