Medical diagnostic image processing apparatus
AssigneesToshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
InventorYoshihiro IKEDA
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Abstract
The invention improves the quality of image diagnosis by a user. An image processing unit compares each pixel value of a perfusion image with a threshold, and extracts a lesion candidate region as a collateral circulation candidate or bypass blood vessel candidate from the perfusion image based on a comparison result. The image processing unit displays the lesion candidate region together with a blood vessel image representing the spatial distribution of blood vessels in a head.
Claims12
A medical diagnostic image processing apparatus comprising:
- a lesion candidate region extraction unit configured to compare each pixel value of a perfusion image with a threshold, and extract, based on a comparison result, a lesion candidate region as a collateral circulation candidate or a bypass blood vessel candidate from the perfusion image;
- and
- a display unit configured to display the lesion candidate region together with a blood vessel image representing a spatial distribution of blood vessels in a head.
A medical diagnostic image processing apparatus comprising:
- a hemisphere specifying unit configured to specify a left hemispheric region and a right hemispheric region of a head according to an instruction using a TTP image representing a spatial distribution of TTP values each indicating a time from when a contrast agent flows into an arbitrary portion of the head until a CT value reflecting a flow rate of the contrast agent reaches a maximum value;
- a first statistic calculation unit configured to calculate a first statistic of the TTP values for each of the specified left hemispheric region and the specified right hemispheric region;
- a determination unit configured to determine a healthy region between the left hemispheric region and the right hemispheric region based on the calculated first statistic;
- a specifying unit configured to specify the determined healthy region in a delay image representing a spatial distribution of delay times of a contrast agent arriving time from a reference portion of the head;
- a second statistic calculation unit configured to calculate a second statistic of the delay times using the delay time of each pixel of the specified healthy region of the delay image;
- a threshold setting unit configured to set a threshold based on the calculated second statistic;
- a lesion candidate region determination unit configured to determine a lesion candidate region of the delay image based on the set threshold;
- and
- a display controller configured to display the determined lesion candidate region on a display.
Dependencies are inferred from the claim text.