Medical image processing apparatus
View Patent ↗Provided is a medical image processing apparatus allowing the generation of image data by changing the reconstruction conditions in correspondence with the positional relation of an observation target based on the projected data chronologically acquired by an X-ray CT scanner. The medical image processing apparatus includes a photographing unit, a reconfiguration processing unit, an extracting unit, and an analyzing unit. The photographing unit scans the flexible site of the living body configured from multiple parts in order to acquire projected data. The reconfiguration processing unit carries out reconfiguration processing on the projected data and generates image data of the flexible site regarding the plurality of timing points. The extracting unit extracts the plurality of components configuring the flexible site from the respective image data. The analyzing unit obtains the positional relation of the plurality of components.
1. A medical image processing apparatus, comprising:
a photographing unit configured to scan a flexible site of the living body having a plurality of components in order to obtain projected data,
a reconfiguration processing unit configured to carry out reconfiguration processing on the projected data to generate image data of the flexible site at a plurality of timing points,
an extracting unit configured to extract the plurality of components configuring the flexible site from the respective image data, and
an analyzing unit configured to determine a positional relation of the plurality of extracted components configuring the flexible site at the plurality of timing points and to specify image data of a specific timing point through conditional determination of the obtained positional relation, the specific timing point corresponding to the determination result.
2. The medical image processing apparatus according to claim 1 , wherein
the reconfiguration processing unit is configured to carry out reconstructing processing on the projected data at a first frame rate to generate first image data of the flexible site,
the extracting unit is configured to extract the plurality of components from the first image data, and
the reconfiguration processing unit is further configured to carry out reconfiguration processing at a second frame rate, which is different from the first frame rate, on the projected data within the specific timing from among the projected data regarding the specific timing point specified by the analyzing unit, to generate second image data.
3. The medical image processing apparatus according to claim 2 , wherein
the sites are bones,
the extracting unit is configured to respectively extract the bones, and
the analyzing unit is configured to carry out the conditional determination of the positional relation of the bones configuring the extracted flexible site.
4. The medical image processing apparatus according to claim 2 , wherein
the analyzing unit is configured to form planes from three or more points of shape characteristics regarding the respective extracted components and to determine the positional relation of two of the formed planes, to realize the positional relation of the components.
5. The medical image processing apparatus according to claim 4 , wherein
the analyzing unit is configured to carry out the conditional determination of the positional relation of the planes based on the angle configured from the two formed planes.
6. The medical image processing apparatus according to claim 4 , wherein
the analyzing unit is configured to carry out the conditional determination of the positional relation of the planes based on a distance between the two formed planes.
7. The medical image processing apparatus according to claim 2 , wherein
the analyzing unit is configured to connect two points of shape characteristics regarding the respective extracted components in order to shape lines, and to determine the positional relation of the two shaped lines, to realize the positional relation of the components.
8. The medical image processing apparatus according to claim 2 , wherein
the analyzing unit is configured to specify the positional relation of the components based on outlines of the extracted components.
9. The medical image processing apparatus according to claim 2 , wherein
the analyzing unit is configured to specify the positional relation of the components based on information showing shades of the extracted components.
10. The medical image processing apparatus according to claim 2 , wherein
the extracting unit is configured to extract the plurality of components based on surface layers of the plurality of components.
11. The medical image processing apparatus according to claim 2 , wherein
the extracting unit extracts a region containing the respective sites configuring the flexible site based on the respective surface layers of a tissue, and
the analyzing unit conditionally determines the amount of change between the shape of the region and a shape determined in advance.
12. The medical image processing apparatus according to claim 2 , wherein
the analyzing unit calculates the amount of change in the position of the plurality of components between the pluralities of timing points, and conditionally makes a determination based on the calculated amount of change.
13. The medical image processing apparatus according to claim 2 , comprising one timing point specifying unit that specifies one timing point in the projected data in advance, wherein,
with the positional relation of the plurality of components corresponding to the specific timing point as the standard, the analyzing unit conditionally makes a determination based on the amount of change from the standard.
14. The medical image processing apparatus according to claim 1 , further comprising
a controlling means for stopping the acquisition of the projected data or changing the imaging conditions by means of the photographing unit when the specific timing point is specified according to the conditional determination by the analyzing unit.
15. The medical image processing apparatus according to claim 14 , wherein
the sites are bones,
the extracting unit respectively extracts the bones, and
the analyzing unit conditionally determines the positional relation of the bones configuring the extracted flexible site.
16. The medical image processing apparatus according to claim 14 , wherein
the analyzing unit shapes surfaces shaped from three or more points of shape characteristics regarding the respective plurality of extracted components and conditionally determines the positional relation of the surface corresponding with the components, thereby specifying the specific timing point.
17. The medical image processing apparatus according to claim 16 , wherein
the analyzing unit calculates the angle configured from the surfaces corresponding with the plurality of shaped components, specifies the image data wherein the calculated angle is the predetermined angle, and realizes the timing point corresponding to the image data as the specific timing point.
18. The medical image processing apparatus according to claim 16 , wherein
the analyzing unit calculates the distance between the surfaces corresponding with the plurality of shaped components, specifies the image data in which the calculated distance is the predetermined distance, and realizes the timing corresponding to the image data as the specific timing point.
19. The medical image processing apparatus according to claim 14 , wherein
the analyzing unit shapes the lines shaped by two points of shape characteristics regarding the respective plurality of extracted components, and conditionally determines the positional relation of the line corresponding to the components.
20. The medical image processing apparatus according to claim 14 , wherein
the analyzing unit specifies the positional relation of the components based on the external form of the respective plurality of extracted components.
21. The medical image processing apparatus according to claim 14 , wherein
the analyzing unit specifies the positional relation of the components based on information showing the shades of the respective plurality of extracted components.
22. The medical image processing apparatus according to claim 14 , wherein
the extracting unit extracts the plurality of components based on the respective surface layers of the flexible site.
23. The medical image processing apparatus according to claim 14 , wherein
the extracting unit extracts the plurality of components as the region comprising a plurality of components based on the surface layers of the flexible site, and
the analyzing unit specifies the timing point in which the shape of the region between the pluralities of timing points corresponds with the shape determined in advance, and realizes the timing point corresponding to the image data as the specific timing point.
24. The medical image processing apparatus according to claim 1 , wherein
the analyzing unit successively analyzes the positional relation of the plurality of components extracted from the image data for each of the timing points between adjacent timing points and conditionally determines the amount of change of the positional relation between the timing points, thereby specifying the specific timing point corresponding with the determination result.
25. The medical image processing apparatus according to claim 1 , wherein
the analyzing unit successively analyzes the positional relation of the plurality of components extracted from the image data for each of the timing points, specifies the specific timing point in which the plurality of components achieves the predetermined positional relation, and supplements information to distinguish from other image data with respect to the image data corresponding to the specific timing point.