Image processing apparatus, image processing method, and program
AssigneeNihon Medi-Physics Co., Ltd.
InventorKazuhiro Nishikawa
Life of this patent
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Abstract
An image processing device includes: an image data acquisition unit for acquiring SPECT image data of a brain; a brain-region ROI definition unit for defining a brain-region ROI in the SPECT image; a striatum ROI definition unit for defining a striatum ROI in the SPECT image; and a threshold determination unit for, based on counts in the SPECT image's background which is the brain-region ROI except the striatum ROI, determining a threshold for distinguishing ventricles and sulci in the SPECT image; a region distinction unit for distinguishing between a region whose number of counts is smaller than or equal to the threshold and a region whose number of counts is larger than the threshold.
Claims18
An image processing device comprising:
- an image data acquisition unit for acquiring nuclear medicine image data of a brain;
- a brain-region ROI definition unit for defining a brain-region ROI in the nuclear medicine image;
- a striatum ROI definition unit for defining a striatum ROI containing the striatum in the nuclear medicine image;
- and
- a threshold determination unit for determining a threshold for distinguishing ventricles and sulci in the nuclear medicine image based on counts in the nuclear medicine image's background which is the brain-region ROI except the striatum ROI,
- wherein a region whose number of counts is smaller than or equal to the threshold and a region whose number of counts is larger than the threshold are distinguished in the nuclear medicine image.
An image processing method for nuclear medicine image data of a brain, comprising the steps of:
- an image processing device acquiring nuclear medicine image data of a brain;
- the image processing device defining a brain-region ROI in the nuclear medicine image;
- the image processing device defining a striatum ROI containing the striatum in the nuclear medicine image;
- the image processing device determining a threshold for distinguishing ventricles and sulci in the nuclear medicine image based on counts in the nuclear medicine image's background which is the brain-region ROI except the striatum ROI;
- and
- the image processing device distinguishing in the nuclear medicine image a region whose number of counts is smaller than or equal to the threshold and a region whose number of counts is larger than the threshold.
A program for image processing of nuclear medicine image data of a brain, the program causing a computer to execute the steps of:
- acquiring nuclear medicine image data of a brain;
- defining a brain-region ROI in the nuclear medicine image;
- defining a striatum ROI containing the striatum in the nuclear medicine image;
- determining a threshold for distinguishing ventricles and sulci in the nuclear medicine image based on counts in the nuclear medicine image's background which is the brain-region ROI except the striatum ROI;
- and
- distinguishing in the nuclear medicine image a region whose number of counts is smaller than or equal to the threshold and a region whose number of counts is larger than the threshold.
Dependencies are inferred from the claim text.