7.0 t whole body mri scanner

Manufactured by Siemens

The 7.0-T whole-body MRI scanner is a high-field magnetic resonance imaging device designed for clinical and research applications. It operates at a magnetic field strength of 7.0 Tesla, which allows for enhanced image quality and detailed anatomical visualization. The scanner is capable of whole-body imaging, providing a comprehensive view of the patient's internal structures.

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Whole-body MRI scanner 7 T MRI scanner 7 T MRI MRI scanner Siemens scanners

2 protocols using 7.0 t whole body mri scanner

High-resolution Multimodal Brain Imaging

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Whole-brain images were acquired using a 7.0-T whole-body MRI scanner (Siemens Medical Systems) with a 32-channel phased-array head coil (Nova Medical Inc.). For all subjects, we obtained 0.4×0.4×1.0 mm³ MTL-tailored 7T T2-weighted structural variable-flip angle turbo spin-echo MRI (0.4 × 0.4 mm in plane resolution, 1 mm slice thickness, 224 coronal slices, TR = 3000 ms, TE = 388 ms, 6.16 ms echo spacing) with oblique coronal slices oriented perpendicular to the long axis of the hippocampus and 0.8×0.8×0.8 mm³ T1-weighted MPRAGE (176 axial slices, TR = 2800 ms, TE = 4.4 ms, TI = 1500 ms, flip angle = 7°). We also obtained 2 mm³ isotropic resting state BOLD-fMRI using a multiband, gradient-echo echoplanar (EPI) sequence (64 axial slices, TR = 1 s; TE = 23.6 ms, MB factor = 4, 420 volumes; 7 minutes) and a B0 field-map sequence (TR1= 1 s, TR2 = 100 ms, TE1 = 3.24 ms, TE2 = 5.37 ms).

Shah P., Bassett D.S., Wisse L.E., Detre J.A., Stein J.M., Yushkevich P.A., Shinohara R.T., Elliott M.A., Das S.R, & Davis K.A. (2019). Structural and functional asymmetry of medial temporal subregions in unilateral temporal lobe epilepsy: A 7T MRI study. Human Brain Mapping, 40(8), 2390-2398.

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High-Resolution 7T MRI of Healthy Brains

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Whole-brain images were acquired using a 7.0-T whole-body MRI scanner (Siemens Medical Systems) with a 32-channel phased-array head coil (Nova Medical Inc.). For all 31 healthy subjects and additional atlas subjects, we obtained 0.4×0.4×1.0 mm³ MTL-tailored 7T T2-weighted structural turbo spin-echo MRI (0.4 × 0.4 mm in plane resolution, 1 mm slice thickness, 224 coronal slices, TR = 3000 ms, TE = 388 ms, 6.16 ms echo spacing) with oblique coronal slices oriented perpendicular to the long axis of the hippocampus and 0.8×0.8×0.8 mm³ T1-weighted MPRAGE (176 axial slices, TR = 2800 ms, TE = 4.4 ms, TI = 1500 ms, flip angle =7°). We also obtained 2 mm³ isotropic resting state fMRI in a subset of 24 healthy adult subjects (mean age = 31.7, standard deviation 11.2, 14 female), using a gradient-echo echoplanar (EPI) sequence (64 axial slices with 2mm thickness prescribed in the superior-inferior direction starting from the apex of the brain; matrix size = 96×96; FOV = 192mm; TR = 1 s; TE = 23.6 ms; multiband factor = 4; 420 volumes; 7 minutes) and a B0 field-map sequence (TR= 1 s, TE1=3.24 ms, TE2=5.37 ms). This fMRI acquisition led to coverage of the entire cerebrum in all subjects.

Shah P., Bassett D.S., Wisse L.E., Detre J.A., Stein J.M., Yushkevich P.A., Shinohara R.T., Pluta J.B., Valenciano E., Daffner M., Wolk D.A., Elliott M.A., Litt B., Davis K.A, & Das S.R. (2017). Mapping the structural and functional network architecture of the medial temporal lobe using 7T MRI. Human Brain Mapping, 39(2), 851-865.

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