Table 1 MRI protocol for MRgHiFUS for renal sympathetic denervation
From: MR-guided high-focused ultrasound for renal sympathetic denervation—a feasibility study in pigs
Protocol | Sequence |
|---|---|
Preprocedural planning | T2-w FSE: axial, sagittal, coronal |
TR/TE 2,700/102 ms, ETL 20, bandwidth 15.6 kHz, FOV 36 cm, matrix 256 × 256, NEX 1.5, SL 4 mm | |
MRI temperature monitoring | Phase imaging with the use of a FSGRE sequence, TR/TE 26.4/13.1 ms, flip angle 30°, bandwidth 5.7 kHz, matrix 256 × 128, FOV 36 cm, SL 3–5 mm |
Postinterventional control | Fat-saturated T2-w FSE TR/TE 2,700/101 ms, ETL 20, bandwidth 15.6 kHz, FOV 36 cm, matrix 256 × 256, NEX 1.5, SL 4 mm |
MR angiography | T1-w contrast-enhanced MR angiography FGRE 3D, TR/TE 3.45/1.2 ms, SL 1 mm, imaging frequency 63.8 kHz, pixel bandwidth 420, FOV 36 cm, matrix 384 × 376, flip angle 25° |