Magnetic resonance imaging apparatus and magnetic resonance...

Electricity: measuring and testing – Particle precession resonance – Determine fluid flow rate

Reexamination Certificate

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C324S309000

Reexamination Certificate

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07825660

ABSTRACT:
An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing.

REFERENCES:
patent: 5379766 (1995-01-01), McKinnon et al.
patent: 6070095 (2000-05-01), McKinnon et al.
patent: 6171241 (2001-01-01), McVeigh et al.
patent: 6188922 (2001-02-01), Mistretta et al.
patent: 6453187 (2002-09-01), Prince et al.
patent: 6597935 (2003-07-01), Prince et al.
patent: 6777933 (2004-08-01), Stoyle
patent: 6892089 (2005-05-01), Prince et al.
patent: 6954067 (2005-10-01), Mistretta
patent: 7049816 (2006-05-01), Mistretta et al.
patent: 7358728 (2008-04-01), Nozaki et al.
patent: 7365543 (2008-04-01), Yui et al.
patent: 7557575 (2009-07-01), Ookawa et al.
patent: 2001/0043069 (2001-11-01), Nehrke et al.
patent: 2006/0079754 (2006-04-01), Welch et al.
patent: 2007/0156044 (2007-07-01), Mistretta et al.
patent: 2000-41970 (2000-02-01), None
patent: 02/084318 (2002-10-01), None
patent: 2004/046746 (2004-06-01), None
Lui et al., “A Monitoring Feedback, and Triggering System for Reproducible Breath-Hold MR Imaging”, Magentic Resonance in Medicine, vol. 30, No. 4, pp. 507-511 (1993).
Ehman et al., “Adaptive Technique for High-Definition MR Imaging of Moving Structures”, Radiology, vol. 173, No. 1, pp. 255-263 (1989).
Oshio, “Whole Heart Coronary Angiogrraphy Using Self-Navigated ‘Paddle-Wheel’ Balanced SSFP”, Proc. Intl. Soc. Mag. Reson. Med., vol. 13, p. 707 (2005.
Extended European Search Report dated Jan. 22, 2010 in EP 07002298.3.
Yui M., et al., “Motion measurement using echoes during SSFP dummy cycles for whole-heart MR coronary artery,” Proceedings of the International Society for Magnetic Resonance in Medicine, 14thScientific Meeting and Exhibition, Seattle, Washington, USA, May 6-12, 2006, p. 2158, XP002562504.
Jung Bemd et al., “Navigation of the heart with single-shot images,” Proceedings of the International Society for Magnetic Resonance in Medicine, 8thScientific Meeting and Exhibition, Glasgow, Scotland, UK, Apr. 21-27, 2001, p. 753, XP 002562505.
Kadah Y. M. et al., “Floating navigator echo (FNAV) for in-plane 2D translational motion estimation,” Magnetic Resonance in Medicine, Academic Press, Duluth, MN, US, vol. 51, 2004, pp. 403-407, XP 002562506.
Manke D. et al., “Novel prospective respiratory motion correction approach for free-breathing coronary MR angiography using a patient-adapted affine motion model,” Magnetic Resonance in Medicine, Academic Press, Duluth, MN, US, vol. 50, No. 1, Jul. 1, 2003, pp. 122-131, XP 002342540, ISSN: 0740-3194.
Nehrke K, Börnert, P., “Prospective correction of affine motion for arbitrary MR sequences on a clinical scanner,” Magnetic Resonance in Medicine, Academic Press, Duluth, MN, US, vol. 54, 2005, pp. 1130-1138, XP 002562508.
Li J. M. et al., “Respiratory self-navigated SSFP,” Proceedings of the International Society for Magnetic Resonance in Medicine, 13thScientific Meeting and Exhibition, Miami Beach, Florida, USA, May 7-13, 2005, p. 2234, XP 002562509.
Gatehouse P. D. , Firmin D. N., “Respiratory navigators in non-stop cine cardiovascular SSFP imaging,” Proceedings of the International Society for Magnetic Resonance in Medicine, 12thScientific Meeting and Exhibition, Kyoto, Japan, May 15-21, 2004, p. 1963, XP 002562510.
Schaffer R. W. et al., “Calculating a reference from navigators placed over the heart,” Proceedings of the International Society for Magnetic Resonance in Medicine, 10thScientific Meeting and Exhibition, Honolulu, Hawaii, USA, May 18-24, 2002, p. 2308, XP 002562511.

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