Radiant energy – Calibration or standardization methods
Reexamination Certificate
2005-10-18
2005-10-18
Porta, David (Department: 2878)
Radiant energy
Calibration or standardization methods
Reexamination Certificate
active
06956202
ABSTRACT:
A description is given of a method and a device for the calibration of an image pick-up device which is sensitive to magnetic fields and for the imaging by means of such an image pick-up device. The image pick-up device is notably an image intensifier in X-ray systems such as, for example, systems provided with a C-arm. Calibration is performed essentially by forming and storing a look-up table whereby a plurality of magnetic field data acting on the image pick-up device is associated with calibration data required for correcting the distortions caused thereby. During imaging, the magnetic field data acting on the image pick-up device during the formation of an image is measured and the calibration data associated with this magnetic field data in the table is read out and used for the correction of the acquired image.
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Sabczynski Joerg
Zylka Waldemar
Koninklijke Philips Electronics , N.V.
Lee Shun
McKnight Douglas B.
Porta David
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