Multi-freedom-degree cone-beam CT imaging system

Abstract

The invention discloses a multi-degree-of-freedom cone-beam CT imaging system in the field of CT imaging technology, which includes: a six-axis mechanical arm, a C-shaped bracket with a translation device, a flat panel detector bracket with a double translation device and a rotation device, and The X-ray light source, wherein: the end of the six-axis mechanical arm is connected to the C-shaped support, and the two ends of the C-shaped support are respectively connected to the flat panel detector support and the X-ray light source. The device involved in the present invention has high flexibility, and can realize multiple scanning modes of cone beam CT axial scanning, helical scanning and non-coplanar scanning, as well as functions such as online real-time adjustment of imaging geometric parameters, and has flexible scanning methods, wide scanning range, With outstanding advantages such as adjustable imaging parameters, it is suitable for applications such as precise intraoperative navigation, adaptive radiation therapy, and early tumor screening and diagnosis.

Description

technical field [0001] The invention relates to a device in the technical field of medical devices, in particular to a multi-degree-of-freedom cone-beam CT imaging system. Background technique [0002] X-ray cone-beam CT installed beside the treatment bed is an important means of realizing image guidance today. At present, the scanning trajectory of the cone beam CT system is limited, and generally only a single scan of a circular trajectory is performed, so the longitudinal space coverage is low, generally about 15 cm, and the non-coplanar scanning strategy cannot be realized. The low longitudinal coverage leads to the use of "step-exposure" mode in the treatment of head and neck tumors, that is, after completing a circular trajectory scan, the bed is translated to the next body position, and another scan is performed to cover the entire head and neck. This will double the radiation dose, and the subsequent image stitching and fusion is also very cumbersome. However, the ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a multi-degree-of-freedom cone-beam CT imaging system, which solves the problem of limited scanning trajectory of the cone-beam CT imaging system, and has the advantages of flexible scanning mode, wide scanning range, and adjustable imaging parameters, etc. It has important application value for high-end medical image guidance, such as intraoperative precise navigation and adaptive radiation therapy, as well as early tumor screening and diagnosis.

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