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We have optimized our prior phantom-based test method for cerebral oximetry performance using a new 3D-printed cerebrovascular module (CVM). In addition, we have and added a surrogate for a thin perfused scalp layer to evaluate perfusion- related confounding factors. The new CVM’s optical properties better represented biological tissue and also incorporated a water-mimicking dye. The modular phantom also included biologically relevant scalp/skull and cerebrospinal fluid (CSF) layers. Performance testing of two commercially available clinical oximeters with the modified CVM over a range of oxygen saturation levels illustrates the utility of our solid phantom-based approach for standardized cerebral oximeter performance assessment.
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Ali Afshari, Rolf B. Saager, Xuewen Zhou, Pejman Ghassemi, Sandy Weininger, Jianting Wang, Anthony J. Durkin, Joshua Pfefer, "Comparison of 3D-printed phantoms for testing cerebral oximeter performance (Conference Presentation)," Proc. SPIE 11231, Design and Quality for Biomedical Technologies XIII, 112310R (9 March 2020); https://doi.org/10.1117/12.2547515