阅读说明：本技术 一种基于超声的ct扫描方法、装置和系统 (CT scanning method, device and system based on ultrasound ) 是由 林阳阳 于 2019-11-05 设计创作，主要内容包括：本发明实施例公开了一种基于超声的CT扫描方法、装置和系统,该方法包括：通过超声设备获取被测对象的血流信息；根据所述血流信息,确定扫描目标部位的扫描计划；基于所述扫描计划,对所述被测对象的目标部位进行CT扫描。本发明实施例通过超声设备测得的血流信息,为CT扫描计划提供了数据基础,解决了现有CT扫描过程中的辐射剂量和造影剂剂量较高的问题,在使用标准水平的辐射剂量和造影剂剂量的情况下,实现对被测对象目标部位的精确CT扫描。(The embodiment of the invention discloses a CT scanning method, a device and a system based on ultrasound, wherein the method comprises the following steps: acquiring blood flow information of a measured object through ultrasonic equipment; determining a scanning plan for scanning the target part according to the blood flow information; and performing CT scanning on the target part of the measured object based on the scanning plan. The embodiment of the invention provides a data base for the CT scanning plan through the blood flow information measured by the ultrasonic equipment, solves the problem of higher radiation dose and contrast agent dose in the existing CT scanning process, and realizes the accurate CT scanning of the target part of the measured object under the condition of using the radiation dose and contrast agent dose of a standard level.)

1. An ultrasound-based CT scanning method, comprising:

acquiring blood flow information of a measured object through ultrasonic equipment;

determining a scanning plan for scanning the target part according to the blood flow information;

and performing CT scanning on the target part of the measured object based on the scanning plan.

2. The method according to claim 1, before acquiring blood flow information of the measured object by the ultrasonic device, further comprising:

an ultrasonic contrast agent or a bubble-containing CT contrast agent is injected into the measured object.

3. The method of claim 1 or 2, wherein the scan plan comprises at least one of a delay time, a monitored site, a contrast dose of CT contrast agent, and an injection rate of CT contrast agent.

4. The method of claim 3, wherein determining a scan plan for scanning the target site based on the blood flow information comprises:

the length of a blood vessel from an injection site to a target site is determined, and a delay time for scanning the target site is determined based on the length of the blood vessel and a blood flow rate.

5. The method of claim 3, wherein determining a scan plan for CT scanning the target site based on the blood flow information comprises:

and determining the delay time for scanning the target part according to the blood flow echo signal of the target part.

6. The method according to claim 4 or 5, wherein the determining a scan plan for CT scanning the target site according to the blood flow information comprises:

and determining the monitoring part of the CT scanning target part according to the delay time, the preparation time of the CT scanning and the blood flow rate.

7. The method of claim 3, wherein determining a scan plan for CT scanning the target site based on the blood flow information comprises:

determining a blood vessel phase of the target part according to the blood flow information;

and determining the contrast agent amount and the injection speed of the CT scanning target part according to the vascular phase.

8. An ultrasound-based CT scanning apparatus, comprising:

the blood flow information acquisition module is used for acquiring blood flow information of the measured object through the ultrasonic equipment;

the scanning plan determining module is used for determining a scanning plan of a CT scanning target part according to the blood flow information;

and the CT scanning module is used for carrying out CT scanning on the target part of the measured object based on the scanning plan.

9. An ultrasound-based CT scanning system, comprising:

the ultrasonic equipment is used for acquiring blood flow information of a measured object;

the CT scanning device is used for acquiring a CT scanning image;

CT contrast agent for improving display degree of CT scanning image of target part;

a processor for performing the ultrasound based CT scanning method of any of claims 1-7.

10. The system of claim 9, further comprising:

an ultrasound contrast agent for enhancing blood flow echo signals.

Technical Field

The embodiment of the invention relates to the technical field of medical imaging, in particular to a CT scanning method, a device and a system based on ultrasound.

Background

The CT scanning mode is a mode of carrying out CT scanning after a certain dose of iodine-containing water-soluble contrast medium is injected intravenously, and the density difference between normal tissues and focal tissues of an observation part can be effectively increased by injecting the CT contrast medium intravenously, so that the display degree of the focal tissues is improved. The CT scanning method is widely applied in the field of medical imaging, and it is important to accurately obtain the time when the CT contrast medium reaches the target region after being injected.

Due to individual differences of different tested objects, the time for the contrast agent to reach the target observation part is not fixed, and in order to accurately acquire the time for the contrast agent to reach the target part, the bolus tracking technology and the CT scanning technology are combined in the prior art to acquire the action time of the contrast agent of different individuals, so that the time for CT scanning the target part is acquired. Wherein the bolus tracking technology comprises a bolus contrast agent tracking technology and a small-dose bolus tracking technology.

Bolus contrast tracking techniques image tissue by CT scans that are performed when the contrast content of the target site reaches a threshold, but this approach increases the radiation dose of the CT scan. The small-dose bolus tracking technique also requires imaging of tissue by CT scanning, and obtains the time for the contrast agent to reach the target site by injecting a small dose of CT contrast agent in advance, thereby obtaining the time for CT scanning. In the above prior art, in order to accurately obtain the time for CT scanning the target region, both the radiation dose and the contrast agent dose of the CT scan are higher than the standard level.

Disclosure of Invention

The embodiment of the invention provides an ultrasound-based CT scanning method, device and system, which are used for realizing accurate CT scanning of a target part under the condition of using lower radiation dose and contrast agent dose.

In a first aspect, an embodiment of the present invention provides an ultrasound-based CT scanning method, where the method includes:

acquiring blood flow information of a measured object through ultrasonic equipment;

determining a scanning plan for scanning the target part according to the blood flow information;

and performing CT scanning on the target part of the measured object based on the scanning plan.

In a second aspect, an embodiment of the present invention further provides an ultrasound-based CT scanning apparatus, where the apparatus includes:

the blood flow information acquisition module is used for acquiring blood flow information of the measured object through the ultrasonic equipment;

the scanning plan determining module is used for determining a scanning plan of a CT scanning target part according to the blood flow information;

and the CT scanning module is used for carrying out CT scanning on the target part of the measured object based on the scanning plan.

In a third aspect, an embodiment of the present invention further provides an ultrasound-based CT scanning system, where the system includes:

the ultrasonic equipment is used for acquiring blood flow information of a measured object;

the CT scanning device is used for acquiring a CT scanning image;

CT contrast agent for improving display degree of CT scanning image of target part;

a processor for performing the ultrasound-based CT scanning method as claimed in any one of the preceding claims.

In a fourth aspect, embodiments of the present invention also provide a storage medium containing computer-executable instructions which, when executed by a computer processor, are configured to perform any of the ultrasound-based CT scanning methods referred to above.

The embodiment of the invention provides a data base for the CT scanning plan through the blood flow information measured by the ultrasonic equipment, solves the problem of higher radiation dose and contrast agent dose in the existing CT scanning process, and realizes the accurate CT scanning of the target part of the measured object under the condition of using the radiation dose and contrast agent dose of a standard level.

Drawings

Fig. 1 is a flowchart of an ultrasound-based CT scanning method according to an embodiment of the present invention.

Fig. 2 is a flowchart of an ultrasound-based CT scanning method according to a second embodiment of the present invention.

Fig. 3 is a schematic diagram of an ultrasound-based CT scanning apparatus according to a third embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an ultrasound-based CT scanning system according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.