Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2006-06-13
2006-06-13
Shrivastav, Brij B. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S318000
Reexamination Certificate
active
07061241
ABSTRACT:
An NMR image of a patient's heart uses SSFSE (single shot fast spin echo) type pulses to condition the body by a preparation of a phase-encoding gradient pulse whose duration differs from one sequence to another so as to define, from one sequence to another, a different effective echo time. At each sequence an image is displayed representing the discrimination of the contributions of the particles of the body as a function of their time T2compared with this effective time. For the heart, with a single respiration on the part of the patient, lesions due to infarction and transplant rejection are revealed.
REFERENCES:
patent: 5545990 (1996-08-01), Kiefer et al.
patent: 5615676 (1997-04-01), Kohno
patent: 5779636 (1998-07-01), Kanazawa
patent: 6057686 (2000-05-01), Van Den Brink et al.
patent: 2005/0148858 (2005-07-01), Hargreaves
patent: 197 20 438 (1998-11-01), None
patent: 2001-14930 (2001-06-01), None
Li Tao et al., “Fast T2-Weighted MR Imaging: impact of variation in pulse sequence parameters on image qualtiy and artifacts”, Magnetic Resonance Imaging, Sep. 2003, vol. 21, No. 7, pp. 745-753.
Mandry et al. “Evaluation of a multiple TE, black blood Single Shot FSE sequence for T2 mapping of the myocardium”, Proc. of the International Society for Mag. Res. in Med., ISRM, 11th Scientific Meeting, Jul. 10, 2003, p. 377.
Marie et al., “Detection and prediction of Acute Heart Transplant Rejection with the Myocardial T2 Determination Provided by a Black-Blood Magnetic Resonance Imaging Sequence”, J. Amer. College of Cardiology, vol. 27, No. 3, 2001, pp. 825-831.
Simonetti et al., “Black-Blood T2 Weighted Inversion-recovery MR imaging of the heart”, Radiology 199:49-57, 1996.
Le Roux et al., “Optimized Outer Volume Suppression for Single-Shot Fast Spin Echo Cardiac Imaging”, JMRI 8:1022-1032, 1998.
Vignaux et al., “Comparison of SSFSE and conventional SE Sequence for MR imaging of the heart: Initial Experience”, Radiology 219:545-550, 2001.
Kalifa et al., Evaluation of myocardial effects of growth hormone treatment in children—Study of myocardial T2 relaxation time: RSNA 2002.
Cantor & Colburn LLP
Shrivastav Brij B.
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