Table 4.
The average sound pressure level in units of A-weighted decibels (dBA) recorded for each of the clinical NICU MR protocols without hearing protection
| Sequencea | NICU MRI system (without hearing protection) |
|---|---|
| Brain | dBA |
| T1 FLAIR – Sag | 92 |
| PD/T2 FSE – Ax | 88 |
| T2* MPGR – Ax | 85 |
| T1 IR prepared 3-D SPGR – Sag | 86 |
| DTI – Ax | 86 |
| BOLD EPI – Ax | 87 |
| Abdomen/chest | dBA |
| T1 LAVA – Sag | 94 |
| bSSFP – Ax and Cor | 94 |
| Single-shot FSE – Cor and Ax | 86 |
| Cardiac bSSFP cine – Obl | 92 |
Ax axial plain, BOLD blood-oxygen-level-dependent, bSSFP balanced steady state free precession, Cor coronal plane, DTI diffusion tensor imaging, EPI echo planar imaging, FLAIR fluid-attenuated inversion recovery, FSE fast spin echo, IR inversion recovery, LAVA liver acquisition with volume acceleration, MPGR multiplanar gradient recalled acquisition in the steady state, Obl oblique plane, PD proton-density weighted, Sag sagittal plane, T1 T1-weighted, T2 T2-weighted, T2* T2*-weighted
a
Acquisition parameters consistent with clinical protocols