Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2004-04-29
2010-10-05
Casler, Brian (Department: 3737)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
C600S407000, C600S410000
Reexamination Certificate
active
07809426
ABSTRACT:
A method of magnetic resonance imaging of anatomy that is subject to a movement cycle (e.g., the heart during a cardiac cycle), comprising: administering a magnetic resonance contrast agent; waiting a period of time until the contrast agent is effective to cause selected portions of the anatomy (e.g., macrotic cardiac tissue) to have a different T1recovery rate from that of other portions (normal cardiac tissue); administering a plurality of inversion recovery pulses spaced in time; acquiring image data at a data acquisition time that is spaced in time by a known time interval following an inversion recovery pulse; varying the time within the movement cycle at which the inversion recovery pulses are administered so that the associated data acquisition times are at a plurality of phases of the movement cycle; processing image data acquired at a phase of the movement cycle to produce at least a portion of an image frame at that phase; and performing the processing for a plurality of phases of the movement cycle to produce a plurality of image frames corresponding to a plurality of phases
REFERENCES:
patent: 4982328 (1991-01-01), Kasugai
patent: 5321357 (1994-06-01), Maryanski et al.
patent: 6205349 (2001-03-01), Kim et al.
patent: 6339332 (2002-01-01), Deimling
patent: 7412277 (2008-08-01), Saranathan et al.
patent: 2004/0049106 (2004-03-01), Kanazawa
Kim, R.J., et. al. “The Use of contrast-enhanced magnetic resonance imaging to identify reversible myocardial dysfunction,” , The New England Journal of Medicine, Nov. 16, 2000., pp. 1445-1453.
Haacke, E.M. et. al., Magnetic Resonance Imaging, Physical Principles and Sequence Design, Wiley-Liss, 1999, p. 416.
Sodickson, D. K. et. al., “Breaking the speed limit in magnetic resonance imaging: an introduction to parallel MRI,” Proceedings of the joint embs/bmes conference, Houston, TX., Oct. 23-26, 2002, pp. 1173-1174.
Westbrook, C. et. al., MRI in Practice, Blackwell Scientific Publications, 1993, pp. 67-74, 192, 200-202.
Thornhill et al., “The assessment of myocardial viability: a review of current diagnostic imaging approaches,” J. Cardiovasc. Magn. Reson. 4:381-410 (2002).
Sandstede, “Assessment of myocardial viability by MR imaging,” Eur. Radiol. 13:52-61 (2003).
Simonetti et al., “An improved MR imaging technique for the visualization of myocardial infarction,” Radiology 218:215-223 (2001).
Kim et al., “Relationship of MRI delayed contrast enhancement to irreversible injury, infarct age, and contractile function,” Circulation 100:1992-2002 (1999).
Wagner et al., “Contrast-enhanced MRI and routine single photon emission computed tomography (SPECT) perfusion imaging for detection of subendocardial myocardial infarcts: an imaging study,” Lancet 361:374-379 (2003).
Klein et al., “Assessment of myocardial viability with contrast-enhanced magnetic resonance imaging—comparison with positron emission tomography,” Circulation 105: 162-167 (2002).
Kellman et al., “Phase-sensitive inversion recovery for detecting myocardial infarction using gadolinium-delayed hyperenhancement,” Magn. Reson. Med. 47:372-83 (2002).
Griswold et al., “Generalized autocalibrating partially parallel acquisitions (GRAPPA),” Magn. Reson. Med. 47:1202-1210 (2002).
Chen Kevin K'O Wen
Kim Jae Koul
Loeffler Ralf B.
Setser Randolph M.
Stillman Arthur E.
Casler Brian
Kish James
Schiff & Hardin LLP
Siemens Medical Solutions USA , Inc.
Singapore General Hospital Pte Ltd.
LandOfFree
Acquiring contrast-enhanced, T1 weighted, cine magnetic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acquiring contrast-enhanced, T1 weighted, cine magnetic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acquiring contrast-enhanced, T1 weighted, cine magnetic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4214715