シミング
English Journal
- High-dose dobutamine stress steady-state free precession (SSFP) cine MRI at 3T with patient adaptive local radiofrequency (RF) shimming using dual-source RF transmission.
- Berger A1, Schnackenburg B2, Schneeweis C1, Kelle S1, Klein C1, Kouwenhoven M3, Fleck E1, Gebker R1.
- Journal of magnetic resonance imaging : JMRI.J Magn Reson Imaging.2015 Sep;42(3):746-53. doi: 10.1002/jmri.24867. Epub 2015 Feb 13.
- PURPOSE: To prospectively assess the feasibility, image quality, and diagnostic accuracy of high-dose dobutamine stress magnetic resonance imaging (DSMR) using steady-state free precession (SSFP) cine imaging at 3T applying a dual-source radiofrequency (RF) excitation magnetic resonance imaging (MRI
- PMID 25683284
- Diffusion-prepared neurography of the brachial plexus with a large field-of-view at 3T.
- Oudeman J1, Coolen BF1, Mazzoli V1,2,3, Maas M1, Verhamme C4, Brink WM5, Webb AG5, Strijkers GJ2,6, Nederveen AJ1.
- Journal of magnetic resonance imaging : JMRI.J Magn Reson Imaging.2015 Aug 6. doi: 10.1002/jmri.25025. [Epub ahead of print]
- PURPOSE: To study diffusion-prepared neurography optimized for a large field-of-view (FOV) to include the neck and both shoulders. In a large FOV poor homogeneity of the magnetic field (B0 ) often leads to poor image quality and possibly to poor diagnostic accuracy. The aim was therefore to find an
- PMID 26251015
- A novel passive shimming method for the correction of magnetic fields above the patient bed in MRI.
- Kong X1, Zhu M1, Xia L2, Crozier S3, Wang Q4, Ni Z4, Liu F5.
- Journal of magnetic resonance (San Diego, Calif. : 1997).J Magn Reson.2015 Aug;257:64-9. doi: 10.1016/j.jmr.2015.05.004. Epub 2015 May 29.
- This paper presents a novel passive shimming method for the effective correction of static magnetic field (B0) inhomogeneities in Magnetic Resonance Imaging (MRI) systems. Passive shimming is used to find an optimum configuration for the placement of iron pieces applied to improve the B0 uniformity
- PMID 26073600
Japanese Journal
- A comparison of shimming techniques for optimizing fat suppression in MR mammography
- Takatsu Yasuo,Nishiyama Kengo,Miyati Tosiaki,Miyano Hideto,Kajihara Mariko,Akasaka Thai
- Radiological Physics and Technology 6(2), 486-491, 2013-07-00
- … We evaluated the degree of inhomogeneities of fat suppression using the fully automated three-dimensional breast shimming technique (Image Based-Smart: IB-Smart) and manual setting of a rectangular parallelepiped shim (volume shimming) in MR mammography. … Shimming of the magnetic field was done with IB-Smart and various dimensions of volume shims: the anterior to posterior/right to left/head to foot directions were set to 75-150/150-350/50-150 mm. …
- NAID 120005334016
- Magnetic field shimming of a permanent magnet using a combination of pieces of permanent magnets and a single-channel shim coil for skeletal age assessment of children
- Terada Y.,Kono S.,Ishizawa K.,Inamura S.,Uchiumi T.,Tamada D.,Kose K.,寺田 康彦,巨瀬 勝美
- Journal of magnetic resonance 230, 125-133, 2013-05-00
- … The homogeneity of the magnetic field was first improved by shimming using pieces of permanent magnets. … The residual local inhomogeneity was then compensated for by shimming using the SC shim coil. … The effectiveness of the shimming was measured by imaging the left hands of human subjects and evaluating the image quality. …
- NAID 120005285767
- Development of a temperature-variable magnetic resonance imaging system using a 1.0 T yokeless permanent magnet
- Terada Y.,Tamada D.,Kose K.,寺田 康彦,巨瀬 勝美
- Journal of magnetic resonance 212(2), 355-361, 2011-10-00
- … The inhomogeneity was drastically reduced by shimming over a wide range of temperature from -5 °C to 45 °C. …
- NAID 120003551309
Related Links
- Shimming definition, a thin slip or wedge of metal, wood, etc., for driving into crevices, as between machine parts to compensate for wear, or beneath bedplates, large stones, etc., to level them. See more. Thesaurus Translate ...
- Sample shimming is a process of optimizing magnetic field homogeneity for recording high resolution spectra. The shim system is essentially a set of coils with specific field profiles in 3D space. There are three shimming methods ...
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