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Updated: Apr 27, 2026
Capture and Release of Viable Circulating Tumor Cells from Blood
Published on: October 28, 2016
Fourier ptychographic microscopy for filtration-based circulating tumor cell enumeration and analysis
Anthony Williams1, Jaebum Chung2, Xiaoze Ou2
1University of Miami, Miller School of Medicine, Department of Pathology, 1501 NW 10th Avenue BRB 742, Miami, Florida 33136bUniversity of Miami, Dr. John T. Macdonald Foundation Biomedical Nanotechnology Institute (BioNIUM), 1501 NW 10th Avenue BRB 714, Mi.
Fourier ptychographic microscopy (FPM) enhances the analysis of circulating tumor cells (CTCs) captured on uneven microfilter surfaces. This advanced imaging technique improves accuracy and efficiency for high-throughput CTC detection in metastatic disease research.
Area of Science:
- Biomedical imaging
- Cancer diagnostics
- Microfluidics
Background:
- Circulating tumor cells (CTCs) are crucial biomarkers for metastatic disease prognosis and treatment.
- Filtration-based methods are used for CTC enrichment, but uneven surfaces hinder standard imaging.
- Previous microfilter devices show efficacy but face limitations with current imaging technologies.
Purpose of the Study:
- To apply Fourier ptychographic microscopy (FPM) for high-resolution imaging of CTCs on uneven microfilter surfaces.
- To overcome limitations of standard microscopy in analyzing filtration-based CTC enrichment.
- To evaluate FPM's performance in terms of image quality, efficiency, and detection consistency.
Main Methods:
- Utilized Fourier ptychographic microscopy (FPM) to image microfilter samples containing CTCs.
- Acquired high-resolution color images with amplitude and phase information over large areas.
- Leveraged FPM's digital refocusing capability to manage uneven sample surfaces.
- Compared FPM imaging with standard microscopy in model systems.
Main Results:
- FPM produced high-resolution images, including amplitude and phase, across large, uneven microfilter areas.
- Digital refocusing enabled clear imaging at multiple focal planes, overcoming surface topography challenges.
- FPM demonstrated high image quality, efficiency, and consistency in detecting tumor cells.
- FPM results showed a high correlation (R² = 0.99932) with standard microscopy in model systems.
Conclusions:
- FPM is a powerful tool for analyzing CTCs on uneven surfaces, addressing a key limitation in filtration-based enrichment.
- The technique offers improved image quality and analysis efficiency for high-throughput CTC detection.
- FPM has significant implications for advancing CTC analysis and imaging of complex, uneven surfaces in general.
