Medical image processing apparatus, medical image processing method, and program

Abstract

To reduce the effort required for measurement. [Solution] The medical image processing apparatus according to the embodiment comprises an acquisition unit, a first determination unit, a second determination unit, and a measurement unit. The acquisition unit acquires a medical image. The first determination unit determines at least two or more reference positions of the medical image. The second determination unit determines a measurement position relative to the reference positions determined by the first determination unit. The measurement unit measures the distance from the measurement position to a reference line determined by the reference positions.

Claims

1. The acquisition unit acquires medical images, A first determination unit that determines at least two or more reference positions of the medical image, A second determination unit determines the measurement position relative to the reference position determined by the first determination unit, The system includes a measuring unit that measures the distance from the measurement position to a reference line determined by the reference position. Medical image processing equipment.

2. The medical image processing apparatus according to claim 1, wherein the measuring unit measures the distance in the anterior-posterior direction of the lower jaw of a fetus in the mother's womb as the distance.

3. The acquisition unit acquires an image of the fetus inside the mother's womb as the medical image. The first determination unit determines a first reference position on the base of one of the lower jaws of the fetus and a second reference position on the base of the other lower jaw as the reference positions. The second determination unit determines the first measurement position on the anterior end of the mandible as the measurement position, The medical image processing apparatus according to claim 2, wherein the measuring unit measures the distance of the mandible in the anterior-posterior direction by measuring the distance from the first measuring position to the reference line connecting the first reference position and the second reference position.

4. A second measuring unit for measuring the transverse diameter of the fetus, A calculation unit that calculates the ratio of the distance of the mandible in the anterior-posterior direction to the large transverse diameter measured by the second measurement unit, The medical image processing apparatus according to claim 3, further comprising the above.

5. The first determination unit determines the positions of two of the three points as the first reference position and the second reference position in response to an input operation that sequentially specifies the positions of three points on the fetal image. The medical image processing apparatus according to claim 3, wherein the second determination unit determines the position of the three points other than the first reference position and the second reference position as the first measurement position.

6. The medical image processing apparatus according to claim 5, wherein the second determination unit obtains the difference between the distance between the first designated position and the second designated position among the three points, and the distance between the second designated position and the third designated position among the three points, and if the obtained difference exceeds a threshold, the first designated position is determined to be the first measurement position.

7. The medical image processing apparatus according to claim 6, wherein the second determination unit determines the second designated position as the first measurement position if the acquired difference is less than or equal to the threshold.

8. The system further comprises an image recognition unit that performs image recognition on the image of the fetus, The first determination unit determines the first reference position and the second reference position based on the results of the image recognition performed by the image recognition unit. The medical image processing apparatus according to claim 3, wherein the second determination unit determines the first measurement position based on the result of the image recognition.

9. The image recognition unit, as part of the image recognition, detects three feature points: one base of the mandible, the other base of the mandible, and the anterior end of the mandible. The first determination unit determines the positions of one base of the mandible and the other base of the mandible, respectively, as detected by the image recognition unit, as the first reference position and the second reference position, The medical image processing apparatus according to claim 8, wherein the second determination unit determines the position of the anterior end of the mandible detected by the image recognition unit to be the first measurement position.

10. The image recognition unit performs image recognition, specifically by recognizing the area of ​​the lower jaw on the image of the fetus. The first determination unit determines the positions of the vertices of the two acute-angled portions of the mandibular region recognized by the image recognition unit as the first reference position and the second reference position, The second determination unit determines the first measurement position to be the position in the recognized mandibular region where the distance from the reference line connecting the first reference position and the second reference position is maximized. The medical image processing apparatus according to claim 8, wherein the measurement unit obtains the maximum distance as the measurement result of the distance in the anterior-posterior direction of the mandible.

11. The first determination unit determines the positions of the two points as the first reference position and the second reference position in response to an input operation specifying the positions of two points on the image of the fetus. The second determination unit searches for a plurality of luminance change points corresponding to each of the plurality of positions on the reference line connecting the first reference position and the second reference position, in a direction perpendicular to the reference line, and determines the position of the change point among the searched plurality of luminance change points that is the largest from the reference line as the first measurement position. The medical image processing apparatus according to claim 3, wherein the measurement unit obtains the maximum distance as the measurement result of the distance in the anterior-posterior direction of the mandible.

12. The medical image processing apparatus according to claim 1, wherein the measuring unit measures the distance from a line passing through the lower jaw and upper jaw of the fetus in the mother's womb to the forehead of the fetus.

13. The acquisition unit acquires an image of the fetus inside the mother's womb as the medical image. The first determination unit determines a third reference position on the anterior end of the fetus's lower jaw and a fourth reference position on the anterior end of the fetus's upper jaw as the reference positions. The second determination unit determines a second measurement position on the forehead of the fetus as the measurement position, The medical image processing apparatus according to claim 12, wherein the measuring unit measures the distance from the line passing through the lower jaw and the upper jaw to the forehead of the fetus by measuring the distance from the second measuring position to the reference line obtained by extending the line connecting the third reference position and the fourth reference position.

14. The first determination unit, in response to an input operation that sequentially specifies the positions of three points on the fetal image, determines the positions of two of the three points as the third reference position and the fourth reference position. The medical image processing apparatus according to claim 13, wherein the second determination unit determines a position other than the third reference position and the fourth reference position among the three points as the second measurement position.

15. The medical image processing apparatus according to claim 1, wherein the measuring unit measures the distance from the contour line of the fetus's face in the mother's womb to the forehead of the fetus as the distance.

16. The acquisition unit acquires an image of the fetus inside the mother's womb as the medical image. The first determination unit determines, as the reference positions, a fifth reference position on the mandible of the fetus and a sixth reference position on the midpoint of the anterior edge of the nasal bone of the fetus. The second determination unit determines a third measurement position on the forehead of the fetus as the measurement position, The medical image processing apparatus according to claim 15, wherein the measuring unit measures the distance from the contour line to the forehead of the fetus by measuring the distance from the third measuring position to the reference line obtained by extending the line connecting the fifth reference position and the sixth reference position.

17. The first determination unit, in response to an input operation that sequentially specifies the positions of three points on the fetal image, determines the positions of two of the three points as the fifth reference position and the sixth reference position. The medical image processing apparatus according to claim 16, wherein the second determination unit determines the position of the three points other than the fifth reference position and the sixth reference position as the third measurement position.

18. The system further includes a second image recognition unit that detects three feature points from the image of the fetus: the mandible, the midpoint of the anterior edge of the nasal bone, and the forehead. The first determination unit determines the detected position of the mandible as the fifth reference position, and determines the position of the midpoint of the anterior edge of the detected nasal bone as the sixth reference position. The medical image processing apparatus according to claim 16, wherein the second determination unit determines the detected forehead position to the third measurement position.

19. Acquire medical images, Determine at least two reference points in the aforementioned medical image, Determine the measurement position relative to the aforementioned determined reference position, The system includes measuring the distance from the measurement position to the reference line determined by the reference position. Medical image processing methods.

20. On the computer, Acquire medical images, Determine at least two reference points in the aforementioned medical image, Determine the measurement position relative to the aforementioned determined reference position, The distance from the measurement position to the reference line determined by the reference position is measured. A program that executes a procedure.

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