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Joseph, A, Helpern, PhD, Non ASSR Member
Caixia, Hu, BS, Non ASSR Member
Giselle, Suero, BS, MD, Non ASSR Member



Ultra-high magnetic field (7 T) full body MRI scanners are becoming increasingly common in imaging centers worldwide. Certain brain imaging applications (e.g. Online buy nasonex without a prescription, susceptibility-weighted imaging (SWI)) have low echo times and field-dependent contrast both highly suited to 7T, resulting in a powerful microscopy. The spinal cord, nasonex trusted pharmacy, which has only recently been imaged at 7 T [1], Buy no prescription nasonex online, is another area where high field MRI may be a great boon to the assessment of such pathologies as multiple sclerosis [2,3], amytrophic lateral sclerosis [4], buy nasonex no prescription, spondylosis [5], Order nasonex no prescription, or spinal cord injury [6,7]. This work presents results of coil development and protocol optimization for high resolution 7 T spinal cord imaging.

Methods & Materials

A single-channel loop coil and a 4-channel array coil (Fig.1, buy nasonex without prescription, Rapid Biomedical, Buy generic nasonex, Inc.), both transmit/receive design, were employed for anatomical spinal cord imaging in a Siemens full body 7 T system, purchase nasonex online. N = 12 healthy volunteers were scanned at 7 T (4 w/ loop coil, 8 w/ array coil) with approval of the local IRB, buy nasonex without prescription. N = 6 of the array coil volunteers were also scanned in a Tim Trio 3 T scanner with standard coils (2-ch neck + 8-channel spine array). Rx free nasonex, 7 T axial anatomical imaging used a FLASH (gre) sequence (TR/TE = 500 / 4.9 ms, flip angle = 40°, 832 x 1024 x 5 matrix, nasonex price, 0.18 x 0.18 x 3 mm voxel) and a T2-weighted TSE sequence (TR/TE = 3290 / 11 ms, Buy nasonex online no prescription, 660 x 832 x 5 matrix, 0.22 x 0.22 x 3 mm voxel, turbo factor 17, buy nasonex from canada, 2 avgs., Order nasonex online c.o.d, flip angle = 160°). 3 T axial FLASH imaging was also performed (TR/TE = 514 / 7.4 ms, flip angle = 20°, where can i buy cheapest nasonex online, 320 x 240 x 25 matrix, Canada, mexico, india, 0.6 x 0.6 x 3 mm voxel) Gray/white matter volumetric analysis for FLASH images used ImageJ.


Figure 1 shows photos of two 7 T coils. The loop coil is placed under the patient in prone position, while the array coil cradles the neck Figure 2 shows FLASH axial (0.18 mm) and sagittal (0.26 mm) images acquired with the loop coil, where can i buy nasonex online, showing longitudinal coverage of C1-C7 region and good axial cord sensitivity. Buy nasonex without prescription, Figure 3 shows axial FLASH and TSE results with the array coil. Japan, craiglist, ebay, overseas, paypal, Excellent spatial detail is observed, differentiating gray/white matter tissue, dorsal and ventral nerve roots, buy nasonex from mexico, denticulate ligaments, Where can i find nasonex online, dura mater, arachnoid sheaths, and rostral-caudal blood vessels, where can i buy cheapest nasonex online. TSE images show some T2 blurring, Online buying nasonex hcl, but also CSF suppression that reveals underlying structures. Figure 4 shows comparison of manually segmented gray matter and whole cord tissue volumes in several matched cervical spine slices of FLASH acquisitions in the same 6 subjects at 3 T and 7 T. At 3 T only total cord volume is measured, order nasonex online c.o.d, while at 7 T white and gray matter sections were differentiated. The correlation between matched slice volumes at 3 T and 7 T for the subject group indicates good agreement (m = 0.97), buy nasonex without prescription. Buy nasonex no prescription, Furthermore, the gray matter volumes, measurable only with the high resolution 7 T FLASH protocol, order nasonex online overnight delivery no prescription, are observed to occupy approximately 25 ± 1 % of the total cord cross-section in the cervical region.


The high resolution achievable at 7 T allows detailed volumetrics that have great potential in tracking morphological changes secondary to myelopathy, Nasonex coupon, following injury, or during recovery. Also, buy cheap nasonex no rx, the secondary structures illustrated in Figure 3 (denticulate ligament, Order nasonex no prescription, dorsal/ventral nerve roots, dura mater, etc.) may assist diagnosis of pathologies unique to these smaller anatomies, buy cheap nasonex. This information may also supplement surgical planning in the highly sensitive cases of decompression or repair.

References/Financial Disclosures

1. Buy nasonex without prescription, Bae K,ISMRM 2009 April; Honolulu. Buy nasonex without prescription, p 632. 2.Ohgiya Y, purchase nasonex online, European Radiology 2007;17(10):2499-2504. Where can i buy nasonex online, 3. Ciccarelli O, Multiple Sclerosis 2007;13:S190-S190, online buy nasonex without a prescription. 4. Valsasina P, ISMRM 2006 May; Seattle, buy nasonex without prescription. Nasonex from canadian pharmacy, p 986. 5. Demir A, buy nasonex from canada, Radiology 2003;229(1):37-43. Buy nasonex online no prescription, 6. Ellingson BM, Ann Biomed Eng 2008;36(2):224-236. 7.Mahmood NS, Spinal Cord 2008;46(12):791-797.

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