Int J Med Robot - A miniature patient-mount navigation system for assisting needle placement in CT-guided intervention.

Tópicos

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Resumo

CKGROUND: CT-guided intervention is routinely performed in an iterative fashion that often leads to lengthy operation and high X-ray exposure to patients. To streamline the workflow, we develop a patient-mount navigation system for assisting needle placement in CT-guided interventions.METHODS: The system comprises three components, a miniature patient-mount tracking unit, an auto-registered reference-frame unit and an intuitive image-processing unit. The system is operated like a virtual biplane fluoroscopy with augmented CT reconstructed images to streamline the conventional CT-guided intervention workflow. Surgery efficiency and safety can be increased, while radiation for patients and surgeons can be reduced. Two preclinical validations were conducted to evaluate the technical applicability and accuracy of the system.RESULTS: The results of the rigid physical phantom test showed a machine position error of 1.6 mm and a tilting error of 1.5?. The results of the deformable porcine phantom test showed the operation position error to be 3.6 mm and tilting error to be 2.9?.CONCLUSIONS: We concluded that the accuracy of our system is within the comparable range of the existing navigation systems.

Resumo Limpo

ckground ctguid intervent routin perform iter fashion often lead lengthi oper high xray exposur patient streamlin workflow develop patientmount navig system assist needl placement ctguid interventionsmethod system compris three compon miniatur patientmount track unit autoregist referencefram unit intuit imageprocess unit system oper like virtual biplan fluoroscopi augment ct reconstruct imag streamlin convent ctguid intervent workflow surgeri effici safeti can increas radiat patient surgeon can reduc two preclin valid conduct evalu technic applic accuraci systemresult result rigid physic phantom test show machin posit error mm tilt error result deform porcin phantom test show oper posit error mm tilt error conclus conclud accuraci system within compar rang exist navig system

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