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2000 4
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426 results

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Page 1
A truncated twisted solenoid RF phase gradient transmit coil for TRASE MRI.
Sedlock CJ, Purchase AR, Tomanek B, Sharp JC. Sedlock CJ, et al. J Magn Reson. 2023 Feb;347:107361. doi: 10.1016/j.jmr.2022.107361. Epub 2022 Dec 22. J Magn Reson. 2023. PMID: 36599255
Without requiring B(0) gradient fields, TRASE MRI can be performed using significantly cheaper bi-planar permanent magnets or Halbach arrays. For TRASE encoding with these magnets, the twisted solenoid has been demonstrated as the most efficient RF transmit coil; ho …
Without requiring B(0) gradient fields, TRASE MRI can be performed using significantly cheaper bi-planar permanent magnets or Halbach arrays …
A geometrically decoupled, twisted solenoid single-axis gradient coil set for TRASE.
Sun H, AlZubaidi A, Purchase A, Sharp JC. Sun H, et al. Magn Reson Med. 2020 Apr;83(4):1484-1498. doi: 10.1002/mrm.28003. Epub 2019 Sep 25. Magn Reson Med. 2020. PMID: 31556163
PURPOSE: TRASE uses phase gradients in the RF transmit field to encode MRI data. A highly efficient twisted solenoid coil was proposed recently for TRASE imaging for transverse B0 geometries. ...However, the strong inductive coupling between a pair of coaxial twiste …
PURPOSE: TRASE uses phase gradients in the RF transmit field to encode MRI data. A highly efficient twisted solenoid coil was …
Excite and receive solenoid radiofrequency coil for MRI-guided breast interventions.
Smith MR, Zhai X, Kurpad KN, Harter RD, Fain SB. Smith MR, et al. Magn Reson Med. 2011 Jun;65(6):1799-804. doi: 10.1002/mrm.22759. Epub 2011 Feb 1. Magn Reson Med. 2011. PMID: 21590808 Free article.
A radiofrequency coil based on a solenoid design was developed and integrated with a novel device for MR-guided breast interventions using a circumferential approach. ...Phantom and in vivo studies using a healthy volunteer demonstrated a superior uniformity using t …
A radiofrequency coil based on a solenoid design was developed and integrated with a novel device for MR-guided breast interve …
Improving the sensitivity of MAS spheres using a 9.5 mm spherical shell with 219 muL sample volume spinning in a spherical solenoid coil.
Gao C, Chen PH, Däpp A, Urban MA, Gunzenhauser R, Alaniva N, Barnes AB. Gao C, et al. J Magn Reson. 2022 Oct;343:107305. doi: 10.1016/j.jmr.2022.107305. Epub 2022 Sep 26. J Magn Reson. 2022. PMID: 36191440 Free article.
However, one major disadvantage so far of spherical rotors is poor NMR filling factor due to the small sample volume and large cylindrical radiofrequency (RF) coil. Here we present a novel NMR coil geometry in the form of a spherical coil. ...The simulation r …
However, one major disadvantage so far of spherical rotors is poor NMR filling factor due to the small sample volume and large cylindrical r …
Volumetric wireless coils for breast MRI: A comparative analysis of metamaterial-inspired coil, Helmholtz coil, ceramic coil, and solenoid.
Jandaliyeva A, Puchnin V, Shchelokova A. Jandaliyeva A, et al. J Magn Reson. 2024 Feb;359:107627. doi: 10.1016/j.jmr.2024.107627. Epub 2024 Jan 23. J Magn Reson. 2024. PMID: 38280267
In particular, we evaluated the transmit efficiency, RF safety, and homogeneity of magnetic field amplitude distribution for four structures electromagnetically coupled with a whole-body birdcage coil: extremely high permittivity ceramic coil, solenoid coi …
In particular, we evaluated the transmit efficiency, RF safety, and homogeneity of magnetic field amplitude distribution for four structures …
The twisted solenoid RF phase gradient transmit coil for TRASE imaging.
Sun H, Yong S, Sharp JC. Sun H, et al. J Magn Reson. 2019 Feb;299:135-150. doi: 10.1016/j.jmr.2018.12.015. Epub 2018 Dec 17. J Magn Reson. 2019. PMID: 30594884
We present the design of a new family of phase gradient transmit coil based upon a solenoid twisted about a transverse axis. This design has many attractive geometric, electrical and magnetic characteristics, including the capability to spatially encode in the direc …
We present the design of a new family of phase gradient transmit coil based upon a solenoid twisted about a transverse axis. T …
A solenoid-like coil producing transverse RF fields for MR imaging.
Jeong E, Kim D, Kim M, Lee S, Suh J, Kwon Y. Jeong E, et al. J Magn Reson. 1997 Jul;127(1):73-9. doi: 10.1006/jmre.1997.1172. J Magn Reson. 1997. PMID: 9245632
A solenoidal RF coil is presented that generates an RF field only perpendicular to the long axis, so that it can be used longitudinally in the usual superconducting solenoid magnet for NMR. ...Images with the eddy-coil-modified tilted solenoid a …
A solenoidal RF coil is presented that generates an RF field only perpendicular to the long axis, so that it can be used longi …
Modified Solenoid Coil That Efficiently Produces High Amplitude AC Magnetic Fields With Enhanced Uniformity for Biomedical Applications.
Bordelon DE, Goldstein RC, Nemkov VS, Kumar A, Jackowski JK, DeWeese TL, Ivkov R. Bordelon DE, et al. IEEE Trans Magn. 2012 Oct;48(1):47-52. doi: 10.1109/TMAG.2011.2162527. IEEE Trans Magn. 2012. PMID: 25392562 Free PMC article.
In this paper, we describe a modified solenoid coil that efficiently generates high amplitude alternating magnetic fields (AMF) having field uniformity (10%) within a 125-cm(3) volume of interest. ...This field uniformity was realized by forming the turns from cylin …
In this paper, we describe a modified solenoid coil that efficiently generates high amplitude alternating magnetic fields (AMF …
New unifying metric for NMR/MRI probe evaluation based on optimized solenoid coil geometry.
Tritrakarn T, Yamamoto K, Takahashi M, Okamura T. Tritrakarn T, et al. J Magn Reson. 2024 Jan;358:107602. doi: 10.1016/j.jmr.2023.107602. Epub 2023 Dec 6. J Magn Reson. 2024. PMID: 38061293
The developed simulation can optimize the RF coil geometry, specifically a single-layer solenoid coil with a constant winding pitch, and the result of the solenoid coil simulation serves as a new unifying metric for evaluating NMR/MRI probes. .. …
The developed simulation can optimize the RF coil geometry, specifically a single-layer solenoid coil with a constant w …
Optimized radio frequency coil for noninvasive magnetic resonance relaxation detection of human finger.
Wang J, Lu R, Bazzi L, Jiang X, Chen Y, Wu Z, Yang Q, Ni Z, Yi H, Xiao D. Wang J, et al. J Magn Reson. 2022 Feb;335:107125. doi: 10.1016/j.jmr.2021.107125. Epub 2021 Dec 10. J Magn Reson. 2022. PMID: 34954546
Numerical simulation and phantom measurements were implemented. The novel RF coil was compared with a regular solenoid coil and a variable width coil. In-vivo experiments were performed. The T coil has a better B(1) field homogeneity than the re …
Numerical simulation and phantom measurements were implemented. The novel RF coil was compared with a regular solenoid coil …
426 results