Scanning control method of CT machine, scanning control device and CT machine
A technology of scanning control and scanning cycle, applied in computed tomography scanners, echo tomography, etc., can solve the problems of the inability to set too many sensors, limit the quality of reconstructed images, increase the cost of CT machines, etc., to achieve high image quality, Simple structure, easy installation and realization
Active Publication Date: 2016-02-24
SIEMENS SHANGHAI MEDICAL EQUIP LTD
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Problems solved by technology
In this way, since a large number of X-rays need to be collected and received in each scanning cycle, a large number of sensors need to be set, which will increase the cost of the CT machine on the one hand, and on the one hand due to the size limitation of the rotating frame 12, the sensor The number of can not be set too much, thus limiting the quality improvement of the reconstructed image
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[0056] In order to achieve better effects and higher image quality, this application proposes a scanning control scheme based on position control.
[0057] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.
[0058] image 3 It is an exemplary flow chart of a method for controlling scanning of a CT machine based on position triggering in an embodiment of the present invention. Such as image 3 As shown, the method includes the following steps:
[0059] Step 301, measure the angular velocity of the rotating gantry of the CT machine in real time.
[0060] When concretely implemented, it can be as Figure 4a The measurement is shown with an angular velocity measuring unit 17 . In one embodiment of the present invention, the angular velocity measurement unit 17 may be a gyroscope. For example, a micro-electromechanical gyroscope can be used, wh...
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The invention discloses a scan control method and device for a CT machine and a CT machine. The method includes steps as follows: measuring an angular speed of a rotating gantry of the CT machine in real time; integrating the real-timely measured angular speed from an initial zero point in each scanning period, and obtaining a current rotation angle of the rotating gantry; judging whether the current rotation angle is equal to a current projected angle corresponding to a current projection position; and if yes, triggering exposure and / or collection of the current projected angle. According to the technical scheme, the scan control is realized in a position triggering manner, and the quality of a reconstructed image is further improved on the premise of lower cost.
Description
technical field [0001] The invention relates to the field of medical equipment, in particular to a scanning control method of a computerized tomography (CT) machine, a scanning control device and a CT machine. Background technique [0002] As a kind of medical equipment, CT machine is widely used in medical and health fields to assist doctors in imaging patients' bodies. figure 1 A structural schematic diagram of a current CT machine is shown in . Such as figure 1 As shown, the CT machine includes: a bottom support component 11 , a rotating gantry (gantry) 12 , an X-ray tube 13 , an X-ray detector 14 , a control device 15 and an image reconstruction device 16 . [0003] Wherein, the rotating frame (gantry) 12 is generally a ring structure, and is installed on the bottom support member 11, and can rotate around its own axis. Usually, the direction parallel to the axis of the rotating frame 12 is called the Z direction, the horizontal direction perpendicular to the Z direct...
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IPC IPC(8): A61B6/03
Inventor 邬海宏
Owner SIEMENS SHANGHAI MEDICAL EQUIP LTD