Combined multispectral spatial frequency domain imaging and computed tomography system for intraoperative breast tumor margin assessment

2017 ◽  
Author(s):  
D. M. McClatchy ◽  
E. J. Rizzo ◽  
V. Krishnaswamy ◽  
S. C. Kanick ◽  
W. A. Wells ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Spatial Frequency ◽  
Frequency Domain ◽  
Breast Tumor ◽  
Margin Assessment ◽  
Tumor Margin ◽  
Tomography System ◽  
Spatial Frequency Domain Imaging ◽  
Spatial Frequency Domain

scholarly journals Single-Fiber Diffuse Reflectance Spectroscopy and Spatial Frequency Domain Imaging in Surgery Guidance: A Study on Optical Phantoms

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7502
Author(s):  
Polina S. Tseregorodtseva ◽  
Kirill E. Buiankin ◽  
Boris P. Yakimov ◽  
Armais A. Kamalov ◽  
Gleb S. Budylin ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Frequency Domain ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Optical Techniques ◽  
Tumor Margin ◽  
Spatial Frequency Domain Imaging ◽  
Margin Detection ◽  
Spatial Frequency Domain

Diffuse reflectance spectroscopy (DRS) and imaging are increasingly being used in surgical guidance for tumor margin detection during endoscopic operations. However, the accuracy of the boundary detection with optical techniques may depend on the acquisition parameters, and its evaluation is in high demand. In this work, using optical phantoms with homogeneous and heterogeneous distribution of chromophores mimicking normal and pathological bladder tissues, the accuracy of tumor margin detection using single-fiber diffuse reflectance spectroscopy and spatial frequency domain imaging was evaluated. We also showed how the diffuse reflectance response obtained at different spatial frequencies with the spatial frequency domain imaging technique could be used not only to quantitatively map absorption and scattering coefficients of normal tissues and tumor-like heterogeneities but also to estimate the tumor depth localization. The demonstrated results could be helpful for proper analysis of the DRS data measured in vivo and for translation of optical techniques for tumor margin detection to clinics.

Spatial frequency domain imaging with a bucket detector

2021 ◽  
Author(s):  
Armin J. M. Lenz ◽  
Pere Clemente ◽  
Vicent Climent ◽  
Jesús Lancis ◽  
Enrique Tajahuerce
Keyword(s):  
Spatial Frequency ◽  
Frequency Domain ◽  
Spatial Frequency Domain Imaging ◽  
Spatial Frequency Domain

scholarly journals Label-free quantitative optical assessment of human colon tissue using spatial frequency domain imaging

2018 ◽  
Vol 22 (8) ◽  
pp. 617-621 ◽  
Author(s):  
S. Nandy ◽  
W. Chapman ◽  
R. Rais ◽  
I. González ◽  
D. Chatterjee ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Frequency Domain ◽  
Human Colon ◽  
Label Free ◽  
Colon Tissue ◽  
Spatial Frequency Domain Imaging ◽  
Spatial Frequency Domain
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