Application of Ultrasound-CT Fusion Navigation 
Technology in Foreign Body Removal: An Ex Vivo Study

Dong Liu; Tielong Liu*

doi:10.70711/pmr.v2i5.6723

Application of Ultrasound-CT Fusion Navigation Technology in Foreign Body Removal: An Ex Vivo Study

Dong Liu, Tielong Liu*

Abstract

Objective This study compares the efficacy of ultrasound-CT fusion navigation technology with conventional ultrasound guidance for foreign body removal in an ex vivo model. Methods: Twenty porcine elbow specimens were randomly assigned to either the
ultrasound-CT fusion navigation (U-C) group or the conventional ultrasound guidance group (n=10 each). Standardized metal, glass, and
wood fragments (5 mm in length) were embedded in deep soft tissue. The U-C group used the ACUSON Sequoia Ultrasound System with
eTRAX needle guidance, while the control group employed conventional ultrasound guidance. Primary outcome measures included operative time, first-attempt removal success rate, and incision length. Results: The U-C group demonstrated significantly better outcomes
across all parameters compared to the conventional guidance group: mean operative time (1210 vs. 2312 minutes, P<0.05), mean incision length ( 0.50.22 vs. 0.90.6 cm, P<0.05), and first-attempt removal success rate (93% vs 77%, P<0.05). Complete foreign body
removal was achieved in all specimens. Conclusion: Ultrasound-CT fusion navigation technology significantly enhances the precision and
efficiency of foreign body removal compared to conventional ultrasound guidance. These findings support its potential clinical application,
though further validation studies are warranted.

Keywords

CT-Ultrasound Fusion Navigation; Foreign Body Removal; Image-Guided Surgery

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DOI: http://dx.doi.org/10.70711/pmr.v2i5.6723

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