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. 2014 Sep 4;5(10):3417-26.
doi: 10.1364/BOE.5.003417. eCollection 2014 Oct 1.

Differentiation of ex vivo human breast tissue using polarization-sensitive optical coherence tomography

Affiliations

Differentiation of ex vivo human breast tissue using polarization-sensitive optical coherence tomography

Fredrick A South et al. Biomed Opt Express. .

Abstract

Successful treatment of breast cancer typically requires surgical removal of the tumor. Optical coherence tomography (OCT) has been previously developed for real-time imaging of the surgical margin. However, it can be difficult to distinguish between normal stromal tissue and cancer tissue based on scattering intensity and structure alone. Polarization-sensitive optical coherence tomography (PS-OCT) is sensitive to form birefringence of biological tissue. We report on the development of a high-speed PS-OCT system and imaging of ex vivo human breast tissue, showing enhanced contrast between healthy and cancerous tissues based upon collagen content confirmed with corresponding histology. These results demonstrate the feasibility of using PS-OCT to supplement structural OCT as a possible method for intraoperative tumor margin evaluation.

Keywords: (110.4500) Optical coherence tomography; (110.5405) Polarimetric imaging; (170.3880) Medical and biological imaging; (170.4500) Optical coherence tomography; (170.6935) Tissue characterization; (260.1440) Birefringence.

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Figures

Fig. 1
Fig. 1
(a) Swept-source PS-OCT system design. FDML: Fourier domain mode-locked laser; LP: Linear polarizer; PBS: Polarizing beam splitter; QWP: Quarter-wave plate. (b) PS-OCT image of molded plastic. (c) PS-OCT image of chicken breast muscle. Scale bar represents 500 µm.
Fig. 2
Fig. 2
Fibro-adipose human breast tissue. (a) Structural OCT image. (b) H&E-stained histology. (c) PS-OCT image (Media 1). (d) Picrosirius red stained histology. (e) En face PS-OCT projection. Scale bars represent 500 µm.
Fig. 3
Fig. 3
Fibrous human breast tissue. (a) Structural OCT image. (b) H&E-stained histology. (c) PS-OCT image (Media 2). (d) Picrosirius red stained histology. (e) En face PS-OCT projection. Scale bars represent 500 µm.
Fig. 4
Fig. 4
Invasive ductal carcinoma replacing the surrounding fibrous environment. (a) Structural OCT image. (b) H&E-stained histology. (c) PS-OCT image (Media 3). Red arrow indicates tumor, green arrow indicates fibrous stroma. (d) Picrosirius red stained histology. (e) En face PS-OCT projection. Scale bars represent 500 µm.
Fig. 5
Fig. 5
Extensive invasive ductal carcinoma that has fully replaced normal breast tissue. (a) Structural OCT image. (b) H&E-stained histology. (c) PS-OCT image (Media 4). (d) Picrosirius red stained histology. (e) En face PS-OCT projection. Scale bars represent 500 µm.
Fig. 6
Fig. 6
Cribriform type ductal carcinoma in situ. (a) Structural OCT image. (b) H&E-stained histology. (c) PS-OCT image (Media 5). (d) Picrosirius red stained histology. (e) En face PS-OCT projection. Scale bars represent 500 µm.

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