Medical image processing apparatus and medical image processing method
A medical image processing apparatus is configured as follows. Namely the apparatus is provided with a first image generation unit which executes reconfiguration processing based on X-ray transmission data to generate a contrast blood vessel figure three-dimensional image data including a figure of a blood vessel in a subject having a contrast media injected thereto, a second image generation unit which executes reconfiguration processing based on the X-ray transmission data to generate a human anatomy figure three-dimensional image data including a figure of a human anatomy in the subject having no contrast media injected thereto, a black-and-white reverse processing unit which executes black-and-white reverse processing with respect to the contrast blood vessel figure three-dimensional image data to generate black-and-white reversed three-dimensional image data, and a combination processing unit which combines the human anatomy figure three-dimensional image data with the black-and-white reversed three-dimensional image data to generate combined image data.
1. A medical image processing apparatus which processes X-ray transmission data collected by an X-ray rotational photographing mechanism, comprising:
a memory which stores a plurality of pieces of human anatomy figure image data collected by photographing a subject before the injection of a contrast media at a plurality of projection angles and a plurality of pieces of contrast image data collected by photographing the subject after the injection of the contrast media at the plurality of projection angles;
a subtraction unit which subtracts the contrast image data from the human anatomy figure image data, which are pieces of image data having the same projection angle concerning the photography, to generate contrast blood vessel figure data;
a first reconfiguration unit implemented by circuitry which executes reconfiguration processing based on the plurality of pieces of contrast blood vessel figure data generated by the subtraction unit to create contrast blood vessel figure three-dimensional image data;
a second reconfiguration unit implemented by circuitry which executes reconfiguration processing based on the plurality of pieces of human anatomy figure data to generate human anatomy figure three-dimensional image data;
a black-and-white reverse processing unit implemented by circuitry which executes black-and-white reverse processing with respect to the contrast blood vessel figure three-dimensional image data to generate capillary blood flow vessel figure three-dimensional image data for enhancing a display of blood flow in capillary blood vessels over arteries and veins; and
a combination processing unit implemented by circuitry which combines the human anatomy figure three-dimensional image data with the capillary blood flow vessel figure three-dimensional image data to generate combined image data.
2. The apparatus according to claim 1 , including a non-region-of-interest deletion unit implemented by circuitry which identifies an observation target region in the human anatomy figure three-dimensional image data and deletes regions other than a region corresponding to the observation target region in the capillary blood flow vessel figure three-dimensional image data.
3. The apparatus according to claim 2 , wherein the non-region-of-interest deletion unit implemented by circuitry identifies the observation target region based on pixel values in the human anatomy figure three-dimensional image data and attenuates pixel values of regions other than a region corresponding to the observation target region in the capillary blood flow vessel figure three-dimensional image data.
4. The apparatus according to claim 3 , wherein a pixel value of the observation target region is a pixel value indicative of a soft tissue level.
5. The apparatus according to claim 2 , wherein the non-region-of-interest deletion unit includes a non-region-of-interest deletion unit which identifies an observation target region based on a CT value in a CT image and deletes regions other than a region corresponding to the observation target region in the capillary blood flow vessel figure three-dimensional image data.
6. A medical image processing method for processing X-ray transmission data collected by an X-ray rotational photographing mechanism, comprising:
storing a plurality of pieces of human anatomy figure image data collected by photographing a subject before the injection of a contrast media at a plurality of projection angles and a plurality of pieces of contrast image data collected by photographing the subject after the injection of the contrast media at the plurality of projection angles;
subtracting the contrast image data from the human anatomy figure image data, which are pieces of image data having the same projection angle concerning the photography, to generate contrast blood vessel figure data;
executing reconfiguration processing based on the plurality of pieces of contrast blood vessel figure data generated at the subtraction step to generate contrast blood vessel figure three-dimensional image data;
executing reconfiguration processing based on the plurality of pieces of human anatomy figure data to generate human anatomy figure three-dimensional image data;
executing black-and-white reverse processing with respect to the contrast blood vessel figure three-dimensional image data to generate capillary blood flow vessel figure three-dimensional image data for enhancing a display of blood flow in capillary blood vessels over arteries and veins; and
combining the human anatomy figure three-dimensional image data with the capillary blood flow vessel figure three-dimensional image data to generate combined image data.