阅读说明：本技术 解析装置及解析方法 (Analysis device and analysis method ) 是由 本庄泰德 渡边正毅 五十岚悠 川岸哲也 于 2019-06-06 设计创作，主要内容包括：实施方式涉及解析装置及解析方法。本发明解决的课题在于,提供能够生成能够使用户容易地判断被检体的各种状态的信息的解析装置及解析方法。实施方式的解析装置具备取得部及解析部。取得部取得时序的多普勒图像数据,该时序的多普勒图像数据描绘在血管中所形成的解析对象内的血流。解析部解析上述时序的多普勒图像数据,计算指标值,该指标值基于将上述解析对象内的上述血流包含在内的第1关注区域内的第1血流信号强度的时间变化。(Embodiments relate to an analysis device and an analysis method. An object of the present invention is to provide an analysis device and an analysis method capable of generating information that enables a user to easily determine various states of a subject. The analysis device of the embodiment includes an acquisition unit and an analysis unit. The acquisition unit acquires time-series Doppler image data that depicts a blood flow in an analysis target formed in a blood vessel. The analysis unit analyzes the time-series Doppler image data and calculates an index value based on a temporal change in the 1 st blood flow signal intensity in a 1 st region of interest including the blood flow in the analysis target.)

1. An analysis device is provided with:

An acquisition unit that acquires time-series Doppler image data that depicts a blood flow in an analysis target formed in a blood vessel; and

an analysis unit analyzes the time-series Doppler image data and calculates an index value based on a temporal change in the 1 st blood flow signal intensity in a 1 st region of interest including the blood flow in the analysis target.

2. The parsing apparatus of claim 1, wherein,

The analysis unit calculates the index value indicating the activity of the blood vessel.

3. The parsing apparatus of claim 1, wherein,

The above-mentioned analysis object is a plaque,

The analysis unit calculates the index value relating to the possibility of the plaque peeling off from the blood vessel wall.

4. the parsing apparatus of claim 1, wherein,

The analyte is a nutritive blood vessel connected to a tumor,

The analysis unit calculates the index value related to the activity of the tumor.

5. The parsing apparatus of claim 1, wherein,

The analysis object is a peripheral blood vessel,

The analysis unit calculates the index value relating to the activity of the peripheral blood vessel.

6. The parsing apparatus of claim 1, wherein,

The analysis unit calculates the index value for each 1 heartbeat.

7. The parsing apparatus of claim 1, wherein,

The analysis unit generates 1 st distribution information indicating a temporal change in the 1 st blood flow signal intensity.

8. The parsing apparatus of claim 7, wherein,

The analysis unit generates a 1 st curve indicating a temporal change in the 1 st blood flow signal intensity based on the 1 st distribution information.

9. the parsing apparatus of claim 8,

The analysis unit calculates the index value indicating the slope of the 1 st curve per unit time.

10. The parsing apparatus of claim 7, wherein,

The analysis unit calculates the index value based on the 1 st distribution information.

11. The parsing apparatus of claim 1, wherein,

The analysis unit generates an image to which a color corresponding to the index value is assigned, based on the index value calculated at each of the plurality of positions.

12. The parsing apparatus of claim 7, wherein,

The acquisition unit acquires the Doppler image data for a plurality of cardiac volumes,

The analysis unit analyzes the doppler image data of a plurality of heart beats, and generates 3 rd distribution information by synthesizing a plurality of 2 nd distribution information obtained by dividing the 1 st distribution information.

13. the parsing apparatus of claim 12, wherein,

The analysis unit calculates a maximum value or a minimum value of the 1 st blood flow signal intensity in the 3 rd distribution information as the index value.

14. The parsing apparatus of claim 12, wherein,

The analysis unit calculates a ratio or a difference between a maximum value and a minimum value of the 1 st blood flow signal intensity in the 3 rd distribution information as the index value.

15. The parsing apparatus of claim 12, wherein,

the analysis unit calculates, as the index value, a value obtained by dividing a difference between the 1 st blood flow signal intensity and the maximum value at a time preceding a time corresponding to the maximum value of the 1 st blood flow signal intensity by a predetermined time in the 3 rd distribution information.

16. The parsing apparatus of claim 8,

the analysis unit generates the 1 st curve having a horizontal axis as time and a vertical axis as the 1 st blood flow signal intensity, and calculates a value of an area surrounded by the 1 st curve and the horizontal axis in a predetermined time range as the index value.

17. The parsing apparatus of claim 3, wherein,

The analysis unit calculates, as the index value, a ratio between a size of the region of the plaque and a size of a blood flow region in the plaque, with respect to the time-series doppler image data.

18. the parsing apparatus of claim 12, wherein,

The analysis unit specifies a 1 st heartbeat cycle based on the 1 st distribution information, and generates the 3 rd distribution information indicating a temporal change in the 1 st blood flow signal intensity for the 1 st heartbeat cycle.

19. The parsing apparatus of claim 18,

The analysis unit generates the 3 rd distribution information by synthesizing a plurality of 2 nd distribution information pieces obtained by dividing the 1 st distribution information piece based on the cycle of the 1 st heartbeat.

20. The parsing apparatus of claim 12, wherein,

The analysis unit generates a statistical value of the plurality of 2 nd distribution information as the 3 rd distribution information.

21. The parsing apparatus of claim 19, wherein,

The analysis unit generates the 3 rd distribution information based on the 2 nd distribution information satisfying a predetermined condition among the plurality of 2 nd distribution information.

22. The parsing apparatus of claim 1, wherein,

the blood vessel is also depicted in the time-series doppler image data,

The analysis unit analyzes the time-series Doppler image data and generates 4 th distribution information indicating a temporal change in the 2 nd blood flow signal intensity in a 2 nd region of interest including the blood flow in the blood vessel.

23. The parsing apparatus of claim 22, wherein,

The analysis unit generates a 2 nd curve indicating a temporal change in the 2 nd blood flow signal intensity based on the 4 th distribution information.

24. The parsing apparatus of claim 22, wherein,

The acquisition unit acquires the Doppler image data for a plurality of cardiac volumes,

The analysis unit analyzes the doppler image data of a plurality of heart rates, and synthesizes a plurality of 5 th distribution information obtained by dividing the 4 th distribution information to generate 6 th distribution information.

25. The parsing apparatus of claim 24,

The analysis unit identifies a time phase in which the 2 nd blood flow signal intensity in the 6 th distribution information is the maximum or minimum, and calculates a value of the 1 st blood flow signal intensity in the time phase as the index value.

26. The parsing apparatus of claim 1, wherein,

the display control unit causes the display unit to display the index value.

27. The parsing apparatus of claim 8,

The apparatus further comprises a display control unit for causing the display unit to display the 1 st curve.

28. The parsing apparatus of claim 1, wherein,

The acquisition unit acquires the Doppler image data for a plurality of cardiac volumes,

The analysis unit analyzes the doppler image data of the plurality of cardiac beats, generates 4 th distribution information indicating a temporal change in the 2 nd blood flow signal intensity in a 2 nd region of interest including the blood flow in the blood vessel, specifies a 1 st cardiac beat cycle based on the 4 th distribution information, and generates 3 rd distribution information indicating a temporal change in the 1 st blood flow signal intensity for the 1 st cardiac beat cycle.

29. The parsing apparatus of claim 1, wherein,

The acquisition unit acquires the time-series doppler image data obtained by inputting, to an adaptive MTI filter, an adaptive moving target indicator filter generated based on the reception data sequence, a reception data sequence including a plurality of pieces of reception data at the same position in a region including the analysis target, the plurality of pieces of reception data being collected by performing, in a frame direction, a plurality of times of ultrasonic scanning in which transmission and reception of ultrasonic waves are set to 1 time for each scanning line in the region.

30. The parsing apparatus of claim 1, wherein,

The acquisition unit acquires the time-series doppler image data that depicts a blood flow in the analysis target formed in the blood vessel of the subject to which the contrast agent is administered.

31. An analytic method, comprising the steps of:

Acquiring time-series Doppler image data which depicts a blood flow in an analysis object formed in a blood vessel; and

analyzing the time-series Doppler image data, and calculating an index value based on a temporal change in the 1 st blood flow signal intensity in a 1 st region of interest including the blood flow in the analysis target.

Technical Field

Background

Carotid plaque forms on the inner wall of the carotid artery and when ruptured forms a thrombus at the site of rupture. This thrombus can cause occlusion of the carotid artery. In addition, thrombus is released and clogs peripheral cerebral arteries, which may cause cerebral infarction. Carotid plaque sometimes peels off during surgery.

Therefore, users such as physicians desire to easily grasp the state of carotid plaque. In addition, the user may want to easily grasp the state of a tumor in a subject in which a tumor is found, the state of a peripheral blood vessel in a subject suffering from diabetes, and the like, in addition to the state of a carotid plaque.

Disclosure of Invention

An object of the present invention is to provide an analysis device and an analysis method capable of generating information that enables a user to easily determine various states of a subject.

drawings

Fig. 1 is a block diagram showing an example of the configuration of an ultrasonic diagnostic apparatus according to embodiment 1.

Fig. 2 is a diagram for explaining an example of the 1 st ultrasonic scan and the 2 nd ultrasonic scan in embodiment 1.

Fig. 3 is a diagram for explaining an example of the 1 st ultrasonic scan and the 2 nd ultrasonic scan in embodiment 1.

Fig. 4 is a diagram for explaining an example of processing executed by the analysis function in embodiment 1.

fig. 5 is a diagram for explaining an example of processing executed by the analysis function according to embodiment 1.

Fig. 6 is a diagram for explaining an example of processing executed by the analysis function according to embodiment 1.

fig. 7 is a diagram for explaining an example of processing executed by the analysis function according to embodiment 1.

Fig. 8 is a diagram for explaining an example of processing executed by the analysis function according to embodiment 1.

Fig. 9 is a flowchart for explaining an example of the flow of analysis processing executed by the control circuit and the analysis circuit in embodiment 1.

Fig. 10 is a diagram showing an example of a region of interest in modification 3 of embodiment 1.

Fig. 11 is a diagram showing an example of the configuration of the medical image processing apparatus according to embodiment 2.

Embodiments relate to an analysis device and an analysis method.