Background: A new stereotactic frame was created in 2015, based on a linear algorithm. It is called Albert Wong (AW) frame. A simple AW stereo-calculator was also designed based on Excel (Microscoft Corporation, Redmond, WA) programme for the frame.
Objective: The aim of this study is to test the accuracy of the AW frame by a direct head to head comparison with CRW frame (Integra Life Sciences, Plainsboro, NJ) on a phantom.
Methods: This is a prospective pilot cross-sectional phantom study with a total of 42 (21 for AW and 21 for CRW) laboratory testings performed in 2017 at our institute to compare the accuracies of both frames in a consecutive manner. A phantom (BL phantom) was newly created, where targets can be placed at different heights and positions on a platform attached under the frame for accuracy testing comparing between the AW and CRW frames.
Results: A comparable accuracy testing results were observed between the AW and CRW frames of 0.64 mm versus 1.07 mm respectively. Approval from the local ethics committee for a clinical trial was obtained. We report on three case illustrations who had the AW frame-based biopsies with definitive diagnoses and without any post-biopsy related complication.
Conclusion: AW frame successfully demonstrated a good accuracy of 0.64 mm in phantom testing using the BL phantom by a linear algorithmic calculation. The clinical trial with three patients demonstrated definitive diagnoses and safety with its use.
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