Rapid low-dose oral cavity CBCT (cone beam computed tomography) imaging method and system

Abstract

The invention provides a rapid low-dose oral cavity CBCT (cone beam computed tomography) imaging method and system, and the method comprises the following steps: collecting a normal position projection image and a lateral position projection image of a head; determining an imaging target area according to the orthotopic projection image and the lateral projection image; determining a scanning track and a scanning frequency according to an imaging requirement of the imaging target area; acquiring image data of the imaging target area according to the scanning track and the scanning frequency; and obtaining a three-dimensional image of the imaging target area according to the image data. According to the invention, the scanning movement distance can be shortened and the scanning frequency can be reduced while the image resolution is ensured, so that the scanning time and the radiation dose can be reduced, and the probability of motion artifacts can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of CBCT imaging, in particular to a fast low-dose oral CBCT imaging method and a fast low-dose oral CBCT imaging system. Background technique [0002] At present, in oral CBCT scanning, in order to obtain images that meet the diagnostic requirements of dentists, the X-ray light source will move along a circular orbit for one week, even if the image required by the doctor is only a local interval in the patient's oral cavity, that is to say, an oral CBCT scan Hundreds to thousands of images need to be collected, and due to the physical limitations of the current dynamic flat panel detectors, the acquisition time of one oral CBCT will also reach tens of seconds. During this period, it will not only cause a large amount of radiation to the patient, but also Increases the chance of motion artifacts due to patient breathing or head bobbing. Contents of the invention [0003] The present invention aims to solve...

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Problems solved by technology

[0002] At present, in oral CBCT scanning, in order to obtain images that meet the diagnostic requirements of dentists, the X-ray light source will move along a circular orbit for one week, even if the image required by the doctor is only a local interval in the patient's oral cavity, that is to say, an oral CBCT scan Hundreds to thousands of images need to be collected, and due to the physical limitations of the current dynamic flat panel detectors, the acquisition time of one oral CBCT will also reach tens of seconds. During this period, it will not only cause a large amount of radiation to the patient, but also Increased chance of motion artifacts due to patient breathing or head bobbing

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