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ECR 2018 / C-0454
Spine Facet Joint Injections (FJI) and RadioFrequency Ablation (RFA) under Ultrasound -CT and Ultrasound-MRI fusion guidance : feasibility study using a multipurpose magnetic tracking system
Congress: ECR 2018
Poster No.: C-0454
Type: Scientific Exhibit
Keywords: Cost-effectiveness, Computer Applications-Virtual imaging, Ablation procedures, Ultrasound, MR, CT, Musculoskeletal spine, Musculoskeletal joint, Interventional non-vascular, Image registration, Image verification
Authors: G. Bizzarri1, L. Velari1, L. Di Vito2, A. Bianchini3, D. Valle4, M. stefani3, A. Dell'Era5; 1Albano Laziale/IT, 2Roma/IT, 3Rome/IT, 4Roma (RM)/IT, 5Gravedona/IT


The use of OmniTRAX allowed very fast co-registration (1 sec), and the initial error never exceeded 8 mm. Manual fine-tuning was mandatory in combination with one-point shift mode registration which reduced the final mismatch to 1-2 mm. The total co-registration including manual fine tuning and one-point shift mode took about 3 minutes on average. The use of the magnetic tracking system did not require any change to the standard technique. Ultrasound-CT and ultrasound MRI fusion guidance was rapid (mean time 4 minutes) and accurate. Before performing the check with digital fluoroscopy, it was important to remove the EM transmitter in order not to have any interference during fluoroscopy acquisition. The learning curve required between two and three procedures.

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