Intraoperative imaging multi-tissue alignment system based on 3D c-arm machine

Abstract

The invention discloses an intraoperative imaging multi-organization alignment method and system based on a three-dimensional C-shaped arm machine. The method comprises a preoperative examination step and an intraoperative alignment step. The intraoperative alignment step comprises the following sub-steps that S21, a patient lies on an operating table; S22, by adopting the three-dimensional C-shaped arm machine, scanning is conducted on a to-be-treated part which is a femur at the fracture side of the patient; S23, multidimensional imaging is conducted on the scanned femur thin layer; S24, the length alpha-2 of an A line and the angle of an included angle beta-2 are obtained; S25, the preoperative alpha value alpha-1 and beta value beta-1 are respectively compared with the intraoperativealpha value alpha-2 and beta value beta-2 to determine whether or not the patient position and / or displacement causes the change of the position of the femur; S26, according to the change of the position of the femur, the actual value of the orthotopic position which needs to be adjusted on the fracture side is adjusted. The method can adjust a surgical plan before the start of a surgery, and canalso reduce the time for the patient and medical workers to be exposed to the radiation.

Description

Technical field[0001]The invention is based on the intraoperative imaging multi-tissue alignment method and system of a three-dimensional C-arm machine.Background technique[0002]Femoral neck fracture refers to the fracture of the femoral neck caused by osteoporosis, degeneration of hip muscles, unresponsiveness, or severe trauma. The blood supply in this part is poor. If the fracture is not handled in time or properly, it will cause non-union of the fracture or concurrent avascular necrosis of the femoral head and traumatic arthritis, which will seriously affect life.[0003]The shape of femoral neck fracture is divided into embedded type and dislocation type fracture. The fracture lines of these two types of femoral neck fractures may appear as dense lines and / or translucent lines. The dense fracture line means that the trabeculae at the two fracture ends have overlapping insertions, while the translucent fracture line means that the two fracture ends are separated. (1) Embedded femo...

AI Technical Summary

Problems solved by technology

Although the ordinary C-arm machine can obtain the patient's anatomical images at any time during the operation, it cannot perform preoperative and intraoperative registration, nor can it provide cross-sectional images with important reference value

Preoperative CT can provide a wealth of anatomical information, but the registration accuracy between the preoperative CT 3D reconstruction model and the intraoperative bone anatomy needs to be improved, the real-time registration is poor, and the patient's anatomical images cannot be obtained during the operation. A series of issues such as the financial burden of patients

At the same time, the current technology of percutaneous nail implantation guided by C-arm machine fluoroscopy has obvious shortcomings. Since the C-arm machine fluoroscopy can only obtain a single plane image at a time, in order to ensure the correctness of reduction, the operator inevitably needs more Adjust the position of the internal fixation once, change the position and angle of the fluoroscopy many times, and continuously perform X-ray irradiation, so that patients and medical staff are exposed to the radiation for a long time, which will cause great damage to the human body.

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