X-ray ct apparatus and method of generating an image
AssigneeGE Medical Systems Global Technology Company, LLC
InventorYasuhiro Imai
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Abstract
The present invention provides an X-ray CT apparatus for imaging an MD image having a better S/N. The X-ray CT apparatus for taking an image with one of two materials within a subject to be examined being fractionated, acquiring two sets of data corresponding to said two types of X-ray having different energy by scanning using said two types of X-ray, generating a first image based on the two sets of data with the pixel values made by weighted addition of two types of CT values corresponding to the two types of X-ray, generating a second image based on the two sets of data, wherein the other one of the two types of material being fractionated, and generating an image by weighted subtraction of the first image and the second image.
Claims20
An X-ray CT apparatus for taking an image with one of two materials within a subject to be examined being fractionated, by using two types of X-ray having different energy, said X-ray CT apparatus comprising:
- a data acquisition device configured to acquire two sets of data corresponding to the two types of X-ray having different energy by scanning using the two types of X-ray;
- a first image generating device configured to generate a first image based on the two sets of data with pixel values made by weighted addition of two types of CT values corresponding to the two types of X-ray;
- a second image generating device configured to generate a second image based on the two sets of data, wherein the other one of the two types of material is fractionated;
- and
- a third image generating device configured to generate an image by weighted subtraction of the first image and the second image.
A method of generating an image for use in an X-ray CT apparatus for taking an image with one of two materials within a subject to be examined being fractionated, by using two types of X-ray having different energy, the method comprising:
- generating a first image based on the two sets of data with pixel values made by weighted addition of two types of CT values corresponding to the two types of X-ray;
- generating a second image based on the two sets of data, wherein the other one of the two types of material is fractionated;
- and
- generating an image by weighted subtraction of the first image and the second image.
Dependencies are inferred from the claim text.