Back to results
US 7,406,188 B2Granted
Data correction method and X-ray CT apparatus
AssigneeGE Medical Systems Global Technology Company, LLC
InventorAkira Hagiwara
Life of this patent
Estimating the term…
Abstract
A method for applying correction adapted to the shape of a subject to be imaged. The method includes applying edge enhancement to data D(r, v, c) of interest if the difference between the data D(r, v, c) of interest and data D(r, v+1, c) in a view adjacent to the view corresponding to the data D(r, v, c) is large, while smoothing is applied to the data D(r, v, c) of interest when the difference is small.
Claims18
An X-ray CT apparatus comprising:
- an X-ray tube;
- a detector;
- a scanning device for collecting a set of data while relatively rotating at least one of said X-ray tube and said detector around a subject to be imaged;
- and
- a data correction processing device for correcting said data with a correction processing in a view direction differentiated according to a magnitude of variation of the data in the view direction to edge enhance the data when the magnitude of variation is greater than a predetermined threshold and smooth the data when the magnitude of variation is not greater than the predetermined threshold.
2 more elements
An X-ray CT apparatus comprising:
- an X-ray tube;
- a detector;
- a scanning device for collecting a set of data while relatively rotating at least one of said X-ray tube and said detector around a subject to be imaged;
- and
- a data correction processing device for correcting said data with a correction processing in a channel direction differentiated according to a magnitude of variation of the data in the channel direction to edge enhance the data when the magnitude of variation is greater than a predetermined threshold and smooth the data when the magnitude of variation is not greater than the predetermined threshold.
2 more elements
An X-ray CT apparatus comprising:
- an X-ray tube;
- a detector;
- a scanning device for collecting a set of data while relatively rotating at least one of said X-ray tube and said detector around a subject to be imaged;
- and
- a data correction processing device for correcting data with a correction processing in a row direction differentiated according to a magnitude of variation of the data in the channel direction to edge enhance the data when the magnitude of variation is greater than a predetermined threshold and smooth the data when the magnitude of variation is not greater than the predetermined threshold.
2 more elements
Dependencies are inferred from the claim text.