Title:
MAGNETIC RESONANCE IMAGING DEVICE AND METHOD FOR ADJUSTING EXCITATION REGION
Document Type and Number:
WIPO Patent Application WO/2011/040289
Kind Code:
A1
Abstract:
In image capturing using two-dimensional selective excitation pulses, regardless of applications thereof, a technique for obtaining a high quality image is provided. In the technique, a two-dimensional selective excitation sequence is carried out while changing a coefficient for determining the cylinder diameter of a region excited by the two-dimensional selective excitation sequence and a time difference for determining an offset position. The obtained excitation region and a desired region are compared with each other, and the coefficient and time difference with which the obtained excitation region and the desired region match each other are determined to be the optimum ones. The determination processing may be performed as an initial adjustment, may be performed according to need in each image capturing, or may be performed on a per-application basis.
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Inventors:
GOTO TOMOHIRO (JP)
NISHIHARA TAKASHI (JP)
ITAGAKI HIROYUKI (JP)
NISHIHARA TAKASHI (JP)
ITAGAKI HIROYUKI (JP)
Application Number:
PCT/JP2010/066346
Publication Date:
April 07, 2011
Filing Date:
September 22, 2010
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
GOTO TOMOHIRO (JP)
NISHIHARA TAKASHI (JP)
ITAGAKI HIROYUKI (JP)
GOTO TOMOHIRO (JP)
NISHIHARA TAKASHI (JP)
ITAGAKI HIROYUKI (JP)
International Classes:
A61B5/055; G01R33/48
Foreign References:
| JP2008054738A | 2008-03-13 | |||
| JPH0654820A | 1994-03-01 | |||
| JP2001340317A | 2001-12-11 | |||
| JP2005253885A | 2005-09-22 | |||
| JP2009072521A | 2009-04-09 | |||
| JP2001187038A | 2001-07-10 |
Other References:
See also references of EP 2484280A4
A.C. BRAU ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 17, 2009, pages 4620
R.RAKOW-PENNER ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 16, 2008, pages 3765
M.W. LAGEMAAT ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 17, 2009, pages 600
S. KONSTANDIN ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 17, 2009, pages 3654
J. PAULY ET AL.: "A k-Space Analysis of Small-Tip-Angle Excitation", JOURNAL OF MAGNETIC RESONANCE, vol. 81, 1989, pages 43 - 56
A.C. BRAU ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 17, 2009, pages 4620
R.RAKOW-PENNER ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 16, 2008, pages 3765
M.W. LAGEMAAT ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 17, 2009, pages 600
S. KONSTANDIN ET AL., PROC. INTL. SOC. MAG. RESON. MED., vol. 17, 2009, pages 3654
J. PAULY ET AL.: "A k-Space Analysis of Small-Tip-Angle Excitation", JOURNAL OF MAGNETIC RESONANCE, vol. 81, 1989, pages 43 - 56
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