Contrast agent tracking and scanning method and device

A scanning method and contrast agent technology, applied in computerized tomography scanners, health index calculations, medical informatics, etc., can solve problems such as increased patient radiation, waste of scanning doses, and inability to effectively guarantee the timeliness of scanning, so as to save scanning Dosage, effect of ensuring timeliness

Active Publication Date: 2014-02-12
NEUSOFT MEDICAL SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the process of realizing the present invention, the inventors of the present invention have found that there are at least the following problems in the prior art: although the time interval of the tracking scan has been reduced, there is still such a situation that the contrast agent The concentration value of is very likely to reach the target concentration value in advance before the next tracking scan time interval arrives (that is, before the next tracking scan is performed). Obviously, it will not be detected until the next tracking scan is performed. The concentration of contrast agent reaches the target value, and the timeliness of routine inspection and scanning cannot be effectively guaranteed
[0006] In addition, reducing the time interval of follow-up scans will inevitably increase the number of follow-up scans. The increase in the number of follow-up scans will not only lead to a waste of scan dose, but also increase the radiation to patients

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  • Contrast agent tracking and scanning method and device
  • Contrast agent tracking and scanning method and device
  • Contrast agent tracking and scanning method and device

Examples

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Embodiment 1

[0060] see figure 1 , which is a flowchart of an embodiment of a contrast agent tracking scanning method of the present invention, the method includes the following steps:

[0061] Step 101: Predict the concentration value of the contrast agent over time according to the contrast agent concentration value of the existing tracking scan;

[0062] An implementation method of predicting the concentration value of the contrast agent over time based on the contrast agent concentration value of the currently existing tracking scan is: obtaining the contrast agent concentration value of the currently existing tracking scan; The contrast agent concentration value is fitted to generate a fitting function about the contrast agent concentration, wherein the independent variable of the fitting function is time, and the dependent variable is the contrast agent concentration.

[0063] Assume, starting from the contrast agent tracking scan, when the current tracking scan is performed, the numb...

Embodiment 2

[0073] In the technical solution of the first embodiment above, the more the number of tracking scans, the greater the amount of raw data (that is, the contrast agent concentration value of the existing tracking scans), and the predicted results (that is, the concentration of contrast medium over time value), the more accurate and therefore more timely the routine inspection scan will be. However, the more the number of follow-up scans, the greater the scan dose, and at the same time, the more serious the radiation to the patient. The difference between the second embodiment and the first embodiment is that by effectively controlling the number of tracking scans, the accuracy of the prediction results, the size of the used scanning dose and the radiation level to the patient can meet the user's requirements at the same time.

[0074] see figure 2 As shown, it is a flow chart of another embodiment of a contrast agent tracking scanning method of the present invention, the meth...

Embodiment 3

[0088] In the first and second embodiments above, at each tracking scan, the concentration value of the contrast agent over time can be predicted according to the contrast agent value of the existing tracking scan. However, usually for the contrast agent, its concentration value increases slowly in the initial stage, basically maintains a low value range, and it is impossible to reach the target concentration value, but it will increase rapidly and reach the target in the later stage concentration value. Such as image 3 shown. Therefore, in order to save the system overhead caused by the prediction, it is more preferable not to predict the concentration value of the contrast agent changing with time in each tracking scan, but to implement the prediction in the stage of rapid increase of the concentration value.

[0089] The difference between the third embodiment and the first embodiment is that before predicting the concentration value of the contrast agent over time, it i...

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Abstract

The embodiment of the invention discloses a contrast agent tracking and scanning method and a contrast agent tracking and scanning device. The method comprises the steps of predicting concentration value change with time of contrast agent according to the concentration value of the current contrast agent for tracking and scanning; determining the duration of change from the current concentration value of the contrast agent to the target concentration value according to the concentration value change with the time of the contrast agent; starting routine examination scanning after the duration. According to the contrast agent tracking and scanning method and the contrast agent tracking and scanning device disclosed by the embodiment of the invention, the timeliness of routine examination scanning can be guaranteed.

Description

technical field [0001] The invention relates to the field of medical diagnostic equipment, in particular to a contrast agent tracking scanning method and device. Background technique [0002] In the current CT system, if a contrast agent is used for image acquisition, multiple contrast agent tracking scans are generally performed periodically before image acquisition to detect whether the concentration of the contrast agent reaches the target concentration value required for routine inspection scans , if the contrast agent concentration value reaches the target value during the routine inspection scan, end the tracking scan, and start the routine inspection scan immediately. [0003] For example, a contrast agent tracking scan is performed within a tracking scan time interval. The specific process is: scan and obtain a positioning image, select the ROI area in the positioning image, measure the CT value of the contrast agent in the ROI area, and judge whether the CT value is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/481A61B6/5217A61B6/54A61B6/541A61B6/542A61M5/007G16H50/30
Inventor 楼珊珊逄岭
Owner NEUSOFT MEDICAL SYST CO LTD
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