X-ray CT scanner, data acquisition system, and data acquisition method
AssigneeCanon Medical Systems Corporation
InventorHiroaki Miyazaki
Life of this patent
Estimating the term…
Abstract
An X-ray CT scanner includes a photon counting type detector and processing circuitry. The detector includes a plurality of detection elements. The processing circuitry determines whether there is a defective element out of the plurality of detection elements and interpolates an output value of a defective element on the basis of output values of a plurality of normal elements which are included in the plurality of detection elements and which are adjacent to a defective element when there is a defective element.
Claims13
An X-ray CT scanner, comprising:
- a photon counting detector including a plurality of anode elements;
- an input interface configured to allow a user to select an imaging mode;
- and
- processing circuitry configured to
- determine whether there is a defective anode element out of the plurality of anode elements, and
- interpolate an output value of the defective anode element based on output values of a plurality of normal elements that are included in the plurality of anode elements and adjacent to the defective anode element, when determining that there is the defective anode element,
- wherein the processing circuitry is further configured to interpolate the output value of the defective anode element based on the imaging mode selected by the user using the input interface.
A data acquisition system that collects count data indicating a counted number of X-ray photons for a plurality of energy bins and output from a photon counting detector including a plurality of anode elements, the data acquisition system comprising:
- an input interface configured to allow a user to select an imaging mode;
- and
- processing circuitry configured to:
- determine whether there is a defective anode element out of the plurality of anode elements;
- and
- interpolate an output value of the defective anode element based on output values of a plurality of normal elements that are included in the plurality of detection elements and adjacent to the defective anode element, when determining that there is the defective anode element,
- wherein the processing circuitry is further configured to interpolate the output value of the defective anode element based on the imaging mode selected by the user using the input interface.
A data acquisition method using an X-ray CT scanner including an input interface configured to allow a user to select an imaging mode and a photon counting detector including a plurality of anode elements, the data acquisition method comprising:
- determining whether there is a defective anode element out of the plurality of anode elements;
- interpolating an output value of the defective anode element based on output values of a plurality of normal elements which that are included in the plurality of anode elements and adjacent to the defective element, when determining that there is the defective anode element;
- and
- interpolating the output value of the defective anode element based on the imaging mode selected by the user using the input interface.
An X-ray CT scanner, comprising:
- a photon counting detector including a plurality of anode elements;
- and
- processing circuitry configured to
- determine whether there is a defective element out of the plurality of anode elements,
- interpolate an output value of the defective element based on output values of a plurality of normal elements that are included in the plurality of anode elements and adjacent to the defective element, when determining that there is the defective element,
- add the output values of the plurality of normal elements for each of a plurality of energy bins over the plurality of energy bins, and interpolate the output value of the defective element based on the added output values, when an imaging mode is a counting mode, and
- interpolate the output value of the defective element based on the output values of the plurality of normal elements for each of a plurality of energy bins, when the imaging mode is a material discrimination mode.
Dependencies are inferred from the claim text.