SURFACE COIL MR-IMAGING OF THE HUMAN BRAIN WITH AN ANALYTIC RECEPTION PROFILE CORRECTION

被引：80

作者：

MOYHER, SE

VIGNERON, DB

NELSON, SJ

机构：

[1] UNIV CALIF SAN FRANCISCO,GRAD GRP BIOENGN,SAN FRANCISCO,CA 94143

[2] UNIV CALIF SAN FRANCISCO,CTR MAGNET RESONANCE SCI,DEPT RADIOL,SAN FRANCISCO,CA 94143

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1995年 / 5卷 / 02期

关键词：

BRAIN; IMAGE PROCESSING; SURFACE COILS;

D O I：

10.1002/jmri.1880050204

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：

An analytic correction method was developed and applied to correct the signal intensity nonuniformity caused by the inhomogeneous reception profile of surface coils used-because of their higher sensitivity-for magnetic resonance imaging of the brain at 1.5 T. The reception profile was analytically modeled by using the Biot-Savart law. The correction considerably improved visual interpretation of the images by modeling and removing the dependence of signal intensity on distance from the coil. The method can be used for single or multiple coils of any planar geometry and in any orientation. Application of this technique allows imaging of the brain with surface coils, yielding increased resolution and signal-to-noise ratio, without the penalty of image nonuniformity.

引用

页码：139 / 144

页数：6

共 10 条

[1]

Axel L, Costantini J, Listerud J, Intensity correction in surface‐coil MR imaging, AJR, 148, pp. 418-420, (1987)

[2]

Brey W, Narayana P, Correction for intensity falloff in surface coil magnetic resonance imaging, Med Phys, 15, pp. 241-245, (1988)

[3]

Narayana P, Brey W, Kulkarni M, Sievenpiper C, Compensation for surface coil sensitivity variation in magnetic resonance imaging, Magn Reson Imaging, 6, pp. 271-274, (1988)

[4]

Fuderer M, van Est A, Surface coil intensity correction using homomorphic filtering (abstr), Book of abstracts: Society of Magnetic Resonance in Medicine 1987, (1987)

[5]

McVeigh E, Bronskill M, Henkelman R, Phase and sensitivity of receiver coils in magnetic resonance imaging, Med Phys, 13, pp. 806-814, (1986)

[6]

Wallner B, Edelman R, Bajakian R, Kleefield J, Atkinson D, Mattle H, Signal normalization in surface‐coll MR imaging, AJNR, 11, pp. 1271-1272, (1990)

[7]

Nelson S, Vlgneron D, Kurhanewicz J, Sakuma H, Moyher S, Kelley D, Correction of MR images for the reception profile of surface and endorectal coils (abstr), Proceedings of the Society of Magnetic Resonance in Medicine 1992, (1992)

[8]

Letcher J, Computer‐assisted design of surface coils used in magnetic resonance imaging. I. The calculation of the magnetic field, Magn Reson Imaging, 7, pp. 581-583, (1989)

[9]

Imaging enhancements: image intensity correction, Scanning, 3, pp. 22-23, (1993)

[10]

Vigneron D, Moyher S, Nelson S, High resolution (0.18 cc) proton 3‐D chemical shift Imaging of the human brain (abstr), Proceedings of the Society of Magnetic Resonance in Medicine 1993, (1993)

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