Time phase determination apparatus and time phase determination method
AssigneeCanon Medical Systems Corporation
InventorsChunqi Wang, Hong Yang, Yutaka Hoshiyama
Life of this patent
Estimating the term…
Abstract
A time phase determination apparatus according to an embodiment is a time phase determination apparatus for determining the range of a particular time phase in a contrast-enhanced image, and includes processing circuitry. The processing circuitry acquires medical images at a plurality of different timings. The processing circuitry extracts a plurality of regions of interest on the basis of the medical images at the different timings. The processing circuitry generates a plurality of time intensity curves that are time intensity curves corresponding to the respective regions of interest. The processing circuitry determines the range of the particular time phase on the basis of the time intensity curves.
Claims15
An image processing apparatus, comprising:
- processing circuitry configured to
- acquire a plurality of medical images, each of which corresponds to a different one of a plurality of timings;
- extract a first region of interest in each of the plurality of medical images;
- extract a second region of interest in each of the plurality of medical images, a timing when the second region of interest is enhanced by a contrast agent being earlier than a timing when the first region of interest is enhanced by the contrast agent;
- generate a first time intensity curve corresponding to a pixel value in the first region of interest at the plurality of timings;
- generate a second time intensity curve corresponding to a pixel value in the second region of interest at the plurality of timings;
- and
- determine a range of a time phase corresponding to a period before a first time phase and after a second time phase, the first time phase being a time phase when the first time intensity curve reaches a predetermined value from a value less than the predetermined value, the second time phase being determined based on a gradient of the second time intensity curve.
An image processing apparatus, comprising:
- processing circuitry configured to
- acquire a plurality of medical images, each of which corresponds to a different one of a plurality of timings;
- extract a first region of interest in each of the plurality of medical images;
- extract a second region of interest in each of the plurality of medical images, a timing when the second region of interest is enhanced by a contrast agent being earlier than a timing when the first region of interest is enhanced by the contrast agent;
- generate a first time intensity curve corresponding to a pixel value in the first region of interest at the plurality of timings;
- generate a second time intensity curve corresponding to a pixel value in the second region of interest at the plurality of timings;
- and
- determine a range of a time phase corresponding to a period before a first time phase and after a second time phase, the first time phase being a time phase when the first time intensity curve reaches a first predetermined value from a value less than the first predetermined value, the second time phase being a time phase when the second time intensity curve reaches a second predetermined value from a value less than the second predetermined value.
Dependencies are inferred from the claim text.