INCIDENTAL MAGNETIZATION TRANSFER CONTRAST IN STANDARD MULTISLICE IMAGING

被引：102

作者：

DIXON, WT

ENGELS, H

CASTILLO, M

SARDASHTI, M

机构：

[1] The Frederik Philips Magnetic Resonance Research Center, Department of Radiology, Emory University, Atlanta

来源：

MAGNETIC RESONANCE IMAGING | 1990年 / 8卷 / 04期

关键词：

Magnetization transfer contrast;

D O I：

10.1016/0730-725X(90)90050-C

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Radio frequency magnetic fields from 5 to 100 kHz off resonance reduce longitudinal magnetization of water in some tissues without affecting the magnetization of simple solutions (Wolff, S.D.; Balaban, R.S. Magnetization transfer contrast (MTC) and tissue water proton relaxation in vivo. Magn. Reson. Med. 10:135-144; 1989). We demonstrate that off resonant fields used in day to day multislice imaging have a significant effect. Extra slices reduced brain (gray and white matter) and muscle intensities 10%-20% relative to fat, water, and paramagnetic solutions, a larger effect than produced by slice overlap. Implications for image contrast and quantitation are discussed. © 1990.

引用

页码：417 / 422

页数：6

共 8 条

[1] Wolff, Balaban, Magnetization transfer contrast (MTC) and tissue water proteon relaxation in vivo, Magn. Reson. Med., 10, pp. 135-144, (1989)
[2] Kelley, Graham, Kappler, Kowalyshyn, Keller, Brown, Magnetization transfer contrast imaging at 2.3T, Soc. Magn. Reson. Med. Abstract Book works in progress, (1989)
[3] Koenig, Brown, Adams, Emerson, Harrison, Magnetic field dependence of 1/T1 of protons in tissue, Investig. Radiol., 19, pp. 76-81, (1984)
[4] Bottomley, Foster, Argersinger, Pfeifer, A review of normal tissues hydrogen NMR relaxation times and relaxation mechanisms from 1–100 MHz: Dependence on tissue type, NMR frequency, temperature, species, excision, and age, Med. Phys., 11, pp. 425-428, (1984)
[5] Rosen, Pykett, Brady, Spin lattice relaxation time measurements in two-dimensional nuclear magnetic resonance imaging: Corrections for plane selection and pulse sequence, J. Comput. Assist. Tomogr., 8, pp. 195-199, (1984)
[6] Kucharczyk, Crawley, Kelly, Henkelman, Effect of multislice interference on image contrast in T2- and T1-weighted MR images, Am. J. Neuroroentgen., 9, pp. 443-451, (1988)
[7] Schwaighofer, Yu, Mattrey, Diagnostic significance of interslice gap and imaging volume in body mr imaging, Am. J. Roentgen., 153, pp. 629-632, (1989)
[8] Gore, Brown, Armitage, An analysis of magnetic cross-relaxation between water and methylene protons in a model system, Magn. Reson. Med., 9, pp. 333-342, (1989)

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