Image analysis – Applications – Biomedical applications
Patent
1996-12-30
1999-08-24
Moore, David K.
Image analysis
Applications
Biomedical applications
382275, 324307, 324309, 600410, G06K 900, G06K 940, G01V 300
Patent
active
059434333
ABSTRACT:
A method is provided for correcting an imaging function g acquired by and MR surface coil having associated spatial inhomogeneity, the function g defining an image comprising a matrix array having a specified number of pixels, and being directed to specified structure within an imaging subject. A shrinking operation is applied to the function g to generate the function g.sub.shrunk comprising an array having a number of pixels equal to the specified number, as reduced by a shrink parameter with respect to each edge of the g function array. Pixels of the function g.sub.shrunk are compared with a threshold value to produce a thresholded shrunk and filtered thresholded functions, respectively. A first function representing the filtered shrunk function is divided by a second function representing the filtered thresholded function to produce a distortion function h.sub.shrunk. The function h.sub.shrunk is expanded to provide a distortion function h, representing a profile of the spatial inhomogeneity. Acquired function g and the computed distortion function h are used to provide a corrected function .function., representing an image of the specified structure from which effects of the inhomogeneity have been substantially reduced.
REFERENCES:
patent: 4823085 (1989-04-01), Fuderer et al.
"The Image Processing Handbook", John C. Russ, 2nd edition, CRC Press 1995, p. 271.
Murakami, James W., Hayes, Cecil E., Weinberger, Ed. "Intensity Correction of Phased-Array Surface Coil Images. " MRM 35:585-590 (1996).
C.R. Meyer,P.H. Bland, J.Pipe (1995) RetrospectiveCorrection of Intensity Inhomogeneities in MRI. Transactions on Medical Imaginh, vol. 14, No. 1, Mar. 1995.
S.E. Moyher, D.B. Vigeron, S.J. Nelson (1995) Surface coil MR imaging of the human brain with an analytic reception profile correction. JMRI 5, 139-144.
L.L. Wald, L. Carvajal, S.E. Moyher, S.J. Nelson, P.E. Grant, A.J. Barkovich, D.B. Vigeron (1995) Phased array detectors and an automated intensity correction algorithm for high resolution MR imaging of the human brain. (JMRI (in press).
Cabou Christian G.
Chen Wenpeng
General Electric Company
Moore David K.
Price Phyllis Y.
LandOfFree
Method for correcting inhomogeneity of spatial intensity in an a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for correcting inhomogeneity of spatial intensity in an a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for correcting inhomogeneity of spatial intensity in an a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-474426