MEDICAL INFORMATION PROCESSING DEVICE, MEDICAL INFORMATION PROCESSING METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM

1 . A medical information processing device comprising:

a memory; and

a processor configured to:

generate a volume rendering (VR) image from a medical image of a subject;

acquire a color image acquired by one or a plurality of optical imaging units, the color image sharing at least a part of an imaging region with the medical image; and

superimpose at least a part of the color image on the VR image.

2 . The medical information processing device according to claim 1 , wherein

the processor is configured to extract a common feature from each of the VR image and the color image, and to align the VR image and the color image based on the feature.

3 . The medical information processing device according to claim 2 , wherein

the medical image is a computed tomography (CT) image in an oral cavity, and

the processor is configured to align the VR image and the color image based on a line segment connecting end points of teeth and a surface area of the teeth.

4 . The medical information processing device according to claim 2 , wherein

the medical image is a CT image in an oral cavity, and

the processor is configured to perform alignment in consideration of a height component of the CT image and an image on which three-dimensional mapping has been executed.

5 . The medical information processing device according to claim 2 , wherein

the medical image is a CT image in an oral cavity, and

the processor is configured to reconstruct, in three dimensions, an image obtained by performing alignment using an image obtained by converting the CT image into two dimensions.

6 . The medical information processing device according to claim 2 , wherein

the processor is configured to estimate shapes of teeth exposed from gums and to perform alignment.

7 . The medical information processing device according to claim 2 , wherein

the processor is configured to perform alignment by using shapes of treated teeth or features in the treated teeth.

8 . The medical information processing device according to claim 2 , wherein

the processor is configured to perform alignment without using a feature of a change in shapes of teeth, the shapes of the teeth having been changed by treatment.

9 . The medical information processing device according to claim 1 , wherein

the processor is configured to set transparency of the color image to be superimposed on the VR image.

10 . The medical information processing device according to claim 1 , wherein

the processor is configured to set a hue of the color image to be superimposed on the VR image.

11 . The medical information processing device according to claim 1 , wherein

the processor is configured to interpolate, when color information in at least a partial region of the color image to be overlaid on the VR image is not acquirable, the color information on the region from surrounding color information.

12 . The medical information processing device according to claim 1 , wherein

the color image is an image in an oral cavity, the image being acquired by a five-image method.

13 . A medical information processing method comprising:

generating, by a processor, a VR image from a medical image of a subject;

acquiring, by the processor, a color image acquired by one or a plurality of optical imaging units, the color image sharing at least a part of an imaging region with the medical image; and

superimposing, by the processor, at least a part of the color image on the VR image.

14 . A non-transitory computer readable medium having a program stored therein and configured to cause a processor to execute:

generating a VR image from a medical image of a subject;

acquiring a color image acquired by one or a plurality of optical imaging units, the color image sharing at least a part of an imaging region with the medical image; and

superimposing at least a part of the color image on the VR image.