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Division of Imaging Research - 8 Tesla MRI

8T MRIThe 8 T magnet arrived in Columbus during the last week of December 1997. It is a superconducting magnet with a bore diameter of 80 cm prior to the inclusion of the room temperature shim and the gradient coils. The magnet weighs about 30 tons. Its length is 326 cm and the length from the center of the field to the magnet base stand is 117 cm. The magnet is equipped with a head and body gradient coil. The head coil is designed with inner diameter of 38 cm and provides a gradient strength of 0.148 (X, Y) and 0,170 (Z) mT/m/A. The body gradient coil has an inner diameter of 58 cm and provides a maximum gradient strength of 0.136 (X, Y) and 0.141 (Z) mT/m/A. The magnet is housed in a shielded room 7.6 m in length, 4.7 m in width, and 4 m in height. This room provides RF shielding and contains the stray magnetic field by using 240,000 kg of annealed low carbon steel. The MRI system is controlled by a Bruker console which has a four transmit and a four receive channels. The magnet achieved the 8 T field in February 10 1998 which required a current of 199 A.

Some of the Papers from the 8T instrument:

  1. Abduljalil AM, Kangarlu A, Zhang X, Burgess RE, Robitaille P-ML, Acquisition of Human Multislice MR Image at 8T, J. Comp. Assist. Tomog., 23 (1999) 335-340.

  2. Burgess RE, Yu Y, Zhang X, Abduljalil AM, Kangarlu A, Robitaille P-M L, High Signal-to-Noise FLASH Imaging at 8 Tesla, Magn. Reson. Imag., 17 (1999) 1099–1103.

  3. Norris DG, Kangarlu A, Schwarzbauer C, Abduljalil AM, Christoforidis G, Robitaille P-ML, MDEFT imaging of the human brain at 8 T, MAGMA 9 (1999) 92–96.

  4. Robitaille P-ML, Warner R, Jagadeesh J, Abduljalil AM, Kangarlu A, Zhang X, Burgess RE, Yu Y, Yang L, Zhu H, Jiang Z, Bailey RE, Chung W, Somawiharja Y, Feynan P, Rayner D, Design and Assembly of an 8 Tesla Whole-Body MR Scanner, J. Comp. Assist. Tomog., 23 (1999) 808-820.

  5. Abduljalil AM and Robitaille PML, Macroscopic Susceptibility in Ultra High Field MRI, J. Comp. Assist. Tomog., 23 (1999) 832-841.

  6. Abduljalil AM, Kangarlu A, Yu Y, Robitaille P-M.L, Technichal Note, Macroscopic Susceptibility in Ultra High Field MRI. II: Acquisition of Spin Echo Images from the Human Head, J. Comp. Assist. Tomog., 23 (1999) 842-844.

  7. Robitaille P-ML, Kangarlu A, Abduljalil AM, RF Penetration in Ultra High Field MRI: Challenges in Visualizing details within the Center of the Human Brain, J. Com. Assist. Tomog. 23 (1999) 845-849.

  8. Christoforidis GA, Bourekas EC, Baujan M, Abduljalil AM, Kangarlu A, Chakeres DW, and Robitaille P-ML, High Resolution MRI of the Deep Brain Vascular Anatomy at 8 Tesla: Susceptibility Based Enhancement of the Venous Structures, J. Comp. Assist. Tomog. 23 (1999) 857-866.

  9. Bourekas EC, Christoforidis GA, Abduljalil AM, Kangarlu A, Chakeres DW, Spigos D, Robitaille P-ML, High Resolution UHFMRI of the Deep Gray Nuclei at 8 Tesla J. Comp. Assist. Tomog., 23 (1999) 867-874.

  10. Kangarlu A, Abduljalil AM, and Robitaille P-ML, T1 and T2 Weighted Imaging at 8 Tesla, J. Comp. Assist. Tomog, 23 (1999) 875-878.

  11. Kangarlu A, Abduljalil AM, Schwarzbauer C, Norris DG, Robitaille PM, Human Rapid Acquisition With Relaxation Enhancement Imaging At 8 T Without Specific Absorption Rate Violation, Magn. Reson. Mater. Phys. Biol. Med. (MAGMA) 9 (1999) 81-4.

  12. Robitaille P-ML, Abduljalil AM, Kangarlu A, Ultra High Resolution Imaging of the Human Head at 8 Telsa: 2K × 2K for Y2K, J. Comp. Assist. Tomog, 24 (2000) 2-8.

  13. Novak P, Novak V, Kangarlu A, Abduljalil AM, Robitaille PML, High resolution MRI of brainstem at 8 Tesla Neurology 54 (2000) A78-A79.

  14. Ibrahim TS, Lee R, Abduljalil AM, Baertlein BA, Robitaille PM, Dielectric Resonances And B(1) Field Inhomogeneity In UHFMRI: Computational Analysis And Experimental Findings Magn. Reson. Imag. 19 (2001) 219-26.

  15. Ibrahim TS, Lee R, Baertlein BA, Abduljalil AM, Robitaille PML, Calculations of EM Interactions with Biological Tissue: Magnetic Resonance Imaging at Ultra High Field, App. Comp. Electro. Soci. J. 16 (2001) 138-144.

  16. Novak, V, Abduljalil AM, Kangarlu A, Slivka A, Bourekas E, Novak P, Chakeres D, Robitaille PM, Intracranial ossifications and microangiopathy at 8 Tesla MRI, Magn. Reson. Imag. 19 (2001) 1133-1137.

  17. Chakeres DW, Abduljalil AM, Novak P, Novak V; Comparison of 1.5 and 8 Tesla high-resolution magnetic resonance imaging of lacunar infarcts, J Comput Assist Tomogr 26 (2002) 628-632.

  18. Abduljalil AM., Schmalbrock P, Novak V, Chakeres DW, Enhanced gray and white matter contrast of phase susceptibility-weighted images in ultra-high field magnetic resonance imaging. Magn. Reson. Imag. 18 (2003) 284-290.

  19. Christoforidis GA, Kangarlu A, Abduljalil AM, Schmalbrock P, Chaudhry A, Yates A, Chakeres DW. Suceptibility-Based imaging of Glioblastoma Microvasularity at 8 T: Correlation of MR Imaging and postmortem pathology. AJNR Am J Neuroradiol 25 (2004) 756-760.

  20. Novak V, Abduljalil AM, Novak P, Robitaille PM. High-resolution ultrahigh-field MRI of stroke. Magn. Reson. Imag. 23 (2005) 539–548.