| Essential MRI Study . | . | . | . |
|---|---|---|---|
| Sequence | Slice thickness (mm) | Gap | Comment |
| Pre-contrast brain sequences | |||
| Axial DWI (b = 0.1000) with ADC | ≤4 | ≤0.4 | Or axial DTI |
| Axial T2 TSE/FSE | ≤4 | ≤0.4 | |
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Axial 2D FLAIR (or post-contrast) | ≤4 | ≤0.4 | Or 3D FLAIR |
| Post-contrast brain sequences | |||
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Coronal T1 SE/TSE/FSE | ≤4 | ≤0.4 | |
| Sagittal T1 SE/TSE/FSE | ≤3 | ≤0.3 | |
| Spine sequences | |||
| Post-contrast sagittal T1 SE (whole thecal sac) | 3 | ≤0.3 | If necessary, add post-contrast axial T1 |
| Complementary Brain Sequences | |||
| Axial SWI | Or axial T2* GRE (4-mm slice thickness) | ||
| Sagittal CISS, FIESTA or DRIVE | ≤0.6 | ||
| Single voxel MRS | TE = 135-144 ms at 1.5T; TE = 288 ms at 3T (due to j-coupling at 135-144 ms) |
| Essential MRI Study . | . | . | . |
|---|---|---|---|
| Sequence | Slice thickness (mm) | Gap | Comment |
| Pre-contrast brain sequences | |||
| Axial DWI (b = 0.1000) with ADC | ≤4 | ≤0.4 | Or axial DTI |
| Axial T2 TSE/FSE | ≤4 | ≤0.4 | |
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Axial 2D FLAIR (or post-contrast) | ≤4 | ≤0.4 | Or 3D FLAIR |
| Post-contrast brain sequences | |||
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Coronal T1 SE/TSE/FSE | ≤4 | ≤0.4 | |
| Sagittal T1 SE/TSE/FSE | ≤3 | ≤0.3 | |
| Spine sequences | |||
| Post-contrast sagittal T1 SE (whole thecal sac) | 3 | ≤0.3 | If necessary, add post-contrast axial T1 |
| Complementary Brain Sequences | |||
| Axial SWI | Or axial T2* GRE (4-mm slice thickness) | ||
| Sagittal CISS, FIESTA or DRIVE | ≤0.6 | ||
| Single voxel MRS | TE = 135-144 ms at 1.5T; TE = 288 ms at 3T (due to j-coupling at 135-144 ms) |
Abbreviations: ADC, apparent diffusion coefficient; CISS, constructive interference in steady state; DRIVE, driven equilibrium; DTI, diffusion tensor imaging; DWI, diffusion-weighted imaging; FIESTA, fast imaging employing steady-state acquisition; FLAIR, fluid-attenuated inversion recovery; FSE, fast spin echo; GRE, gradient echo; MRS, magnetic resonance spectroscopy; SE, spin echo; SWI, susceptibility-weighted imaging; TE, echo time; TSE, turbo spin echo.
| Essential MRI Study . | . | . | . |
|---|---|---|---|
| Sequence | Slice thickness (mm) | Gap | Comment |
| Pre-contrast brain sequences | |||
| Axial DWI (b = 0.1000) with ADC | ≤4 | ≤0.4 | Or axial DTI |
| Axial T2 TSE/FSE | ≤4 | ≤0.4 | |
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Axial 2D FLAIR (or post-contrast) | ≤4 | ≤0.4 | Or 3D FLAIR |
| Post-contrast brain sequences | |||
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Coronal T1 SE/TSE/FSE | ≤4 | ≤0.4 | |
| Sagittal T1 SE/TSE/FSE | ≤3 | ≤0.3 | |
| Spine sequences | |||
| Post-contrast sagittal T1 SE (whole thecal sac) | 3 | ≤0.3 | If necessary, add post-contrast axial T1 |
| Complementary Brain Sequences | |||
| Axial SWI | Or axial T2* GRE (4-mm slice thickness) | ||
| Sagittal CISS, FIESTA or DRIVE | ≤0.6 | ||
| Single voxel MRS | TE = 135-144 ms at 1.5T; TE = 288 ms at 3T (due to j-coupling at 135-144 ms) |
| Essential MRI Study . | . | . | . |
|---|---|---|---|
| Sequence | Slice thickness (mm) | Gap | Comment |
| Pre-contrast brain sequences | |||
| Axial DWI (b = 0.1000) with ADC | ≤4 | ≤0.4 | Or axial DTI |
| Axial T2 TSE/FSE | ≤4 | ≤0.4 | |
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Axial 2D FLAIR (or post-contrast) | ≤4 | ≤0.4 | Or 3D FLAIR |
| Post-contrast brain sequences | |||
| Axial T1 SE/TSE/FSE | ≤4 | ≤0.4 | Or 3D T1 (≤1-mm slice thickness) |
| Coronal T1 SE/TSE/FSE | ≤4 | ≤0.4 | |
| Sagittal T1 SE/TSE/FSE | ≤3 | ≤0.3 | |
| Spine sequences | |||
| Post-contrast sagittal T1 SE (whole thecal sac) | 3 | ≤0.3 | If necessary, add post-contrast axial T1 |
| Complementary Brain Sequences | |||
| Axial SWI | Or axial T2* GRE (4-mm slice thickness) | ||
| Sagittal CISS, FIESTA or DRIVE | ≤0.6 | ||
| Single voxel MRS | TE = 135-144 ms at 1.5T; TE = 288 ms at 3T (due to j-coupling at 135-144 ms) |
Abbreviations: ADC, apparent diffusion coefficient; CISS, constructive interference in steady state; DRIVE, driven equilibrium; DTI, diffusion tensor imaging; DWI, diffusion-weighted imaging; FIESTA, fast imaging employing steady-state acquisition; FLAIR, fluid-attenuated inversion recovery; FSE, fast spin echo; GRE, gradient echo; MRS, magnetic resonance spectroscopy; SE, spin echo; SWI, susceptibility-weighted imaging; TE, echo time; TSE, turbo spin echo.
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