Research Article
With 3 Types of Respiratory Acquisition: 3.0 T Respiratory Triggered Acquisition Can Obtain Higher Quality DWI Images of the Upper Abdomen
Table 1
The imaging parameters and techniques of three different DWI on 1.5 T and 3.0 T.
| | Parameters | Respiratory-triggered (b100-b800) | Breath-holding (b100-b800) | Free-breathing (b100-b800) | | 1.5 T | 3.0 T | 1.5 T | 3.0 T | 1.5 T | 3.0 T |
| | TR/TE (ms) | 6700/75 | 7500/65 | 4500/75 | 4950/65 | 4500/75 | 4950/65 | | Scan time (s) | 120 | 122 | 23 | 25 | 70 | 72 | | NEX | 2 | 2 | 1 | 1 | 4 | 4 | | Band width (kHz) | 250 | 250 | 250 | 250 | 250 | 250 | | Thickness/gap (mm) | 5/1 | 5/1 | 5/1 | 5/1 | 5/1 | 5/1 | | Slice | 24 | 24 | 24 | 24 | 24 | 24 | | Matrix | 128 × 128 | 128 × 128 | 128 × 128 | 128 × 128 | 128 × 128 | 128 × 128 | | Acceleration factor | 2 | 2 | 2 | 2 | 2 | 2 | | Diffusion direction | ALL | ALL | ALL | ALL | ALL | ALL | | FOV (mm) | 360 × 360 | 360 × 360 | 360 × 360 | 360 × 360 | 360 × 360 | 360 × 360 | | Fat suppression | SPIR | SPIR | SPIR | SPIR | SPIR | SPIR |
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TR, repetition time; FOV, field of view; TE, time of echo; SPIR, spectral presaturation with inversion recovery.
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