Publications by authors named "D Susan Willis Chan"

Background: Hallux valgus (HV) is the most prevalent foot condition, associated with a decline in quality of life and a high rate of complications. Pedobarography can be a diagnostic tool, although controversies exist due to differences in measurement scales, type of capture, software, and hardware used. Deformity level differences have not been thoroughly explored.

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As expensive therapeutics rise to the fore of heart failure management, out-of-pocket (OOP) medication costs have become increasingly relevant to patient care. Prescription medication costs influence medical decision-making and affect adherence. Yet, individualized cost estimates are seldom available during clinical encounters when prescription decisions are made.

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Article Synopsis
  • Developed a 3-D acoustic radiation force impulse (ARFI) system for prostate imaging to identify cancerous regions and guide biopsies in one visit using a transrectal probe and 3-D visualization software.
  • The system was tested in a clinical trial comparing ARFI-guided targeted transperineal biopsies with other standard biopsy methods.
  • Results showed ARFI was less effective for lower-grade cancers but performed well for higher-grade cancers, suggesting it could enhance biopsy accuracy when combined with 2-D imaging techniques.
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Spatial protein expression technologies can map cellular content and organization by simultaneously quantifying the expression of >40 proteins at subcellular resolution within intact tissue sections and cell lines. However, necessary image segmentation to single cells is challenging and error prone, easily confounding the interpretation of cellular phenotypes and cell clusters. To address these limitations, we present STARLING, a probabilistic machine learning model designed to quantify cell populations from spatial protein expression data while accounting for segmentation errors.

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The choice of organism to host a genetic circuit, the chassis, is often defaulted to model organisms due to their amenability. The chassis-design space has therefore remained underexplored as an engineering variable. In this work, we explored the design space of a genetic toggle switch through variations in nine ribosome binding site compositions and three host contexts, creating 27 circuit variants.

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