Device for determining the control protocol for the C-arm system
By defining a control protocol within the C-arm system and employing a sequence of roll angles and propeller angles to move the radiation source along an inclined plane trajectory, the problems of image artifacts and high radiation caused by high-attenuation objects were solved, achieving high-quality image acquisition and radiation reduction.
CN113543715BActive Publication Date: 2026-06-30KONINKLIJKE PHILIPS NV
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Patent Information
- Application Number
- CN202080019253.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-03-07
- Filing Date
- 2020-03-05
- Publication Date
- 2026-06-30
- Estimated Expiration
- 2040-03-05
AI Technical Summary
Technical Problem
When using a C-arm system to acquire computed tomography images, high-attenuation objects such as a patient's teeth can cause image artifacts, and the region of interest is exposed to high-intensity radiation. Existing technologies are unable to effectively avoid these problems.
Method used
By defining a control protocol, including a sequence of roll angles and propeller angles, the radiation source follows a circular component trajectory in an inclined plane, and projection data is acquired for image reconstruction, avoiding high-attenuation objects and sensitive areas.
Benefits of technology
It improves image quality, reduces radiation exposure to radiation-sensitive areas, reduces image artifacts, and enhances the safety and stability of the acquisition process.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention relates to an apparatus for determining a control protocol for controlling a C-arm system including a radiation source. The control protocol includes a sequence of roll angles and a sequence of propeller angles. The apparatus includes: a tilt plane providing unit for providing a tilt plane tilted relative to a vertical plane; and a control protocol determining unit for determining the control protocol by determining the sequence of roll angles and the sequence of propeller angles, such that the radiation source follows a trajectory including a circular component in the tilt plane and allowing the C-arm system to acquire projection data for image reconstruction. The apparatus allows for the acquisition of computational images, such as tomographic images, with improved quality and reduces radiation in radiation-sensitive areas.
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