Surgery – Truss – Pad
Patent
1994-07-13
1996-06-25
Smith, Ruth S.
Surgery
Truss
Pad
324309, 324322, A61B 5055
Patent
active
055290698
ABSTRACT:
A magnetic resonance imaging apparatus includes a surface coil for receiving NMR signals released from an examinee, and an image generating unit for generating a sectional image (original image) based on the signals received. A sensitivity distribution identifier obtains sensitivity distribution data of the surface coil for each pixel in the original image by extracting low frequency components from spatial frequency of the image. A correction factor calculator derives correction factor data by substituting a predetermined function into the sensitivity distribution data. An output image calculator determines an image (output image) with improved luminance by calculating, for each pixel, a product of luminance of each pixel in the original image and the correction factor data.
REFERENCES:
2389 Medical Physics 15 (1988) Mar./Apr., No. 2, New York, NY, USA, pp. 241-245, "Correction for Intensity Falloff in Surface Coil Magnetic Resonance Imaging".
2389 Medical Physics 13 (1986) Nov.Dec., No. 6, Woodbury, NY, USA, pp. 806-814, "Phase and Sensitivity of Receiver Coils in Magnetic Resonance Imaging".
IEEE Transactions on Nuclear Science, vol. 40, No. 4, Aug. 1993, pp. 1169-1173, "Accurate Intensity Correction for Endorectal Surface Coil MR Imaging of the Prostate".
Medical Physics 12 (5), Sep./Oct. 1985, pp. 586-591, "Noise and Filtration in Magnetic Resonance Imaging".
Shimadzu Corporation
Smith Ruth S.
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