Open AccessWide-field quantitative micro-elastography of human breast tissue
Author(s) -
Wes M. Allen,
Kelsey M. Kennedy,
Qi Fang,
Lixin Chin,
Andrea Curatolo,
Lucinda Watts,
Renate Zilkens,
Synn Lynn Chin,
Benjamin F. Dessauvagie,
Bruce Latham,
Christobel Saunders,
Brendan F. Kennedy
Publication year - 2018
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.9.001082
Subject(s) - elastography , optical coherence tomography , biomedical engineering , medicine , radiology , elasticity (physics) , quantitative assessment , imaging phantom , medical physics , materials science , ultrasound , risk analysis (engineering) , composite material
Currently, 20-30% of patients undergoing breast-conserving surgery require a second surgery due to insufficient surgical margins in the initial procedure. We have developed a wide-field quantitative micro-elastography system for the assessment of tumor margins. In this technique, we map tissue elasticity over a field-of-view of ~46 × 46 mm. We performed wide-field quantitative micro-elastography on thirteen specimens of freshly excised tissue acquired from patients undergoing a mastectomy. We present wide-field optical coherence tomography (OCT) images, qualitative (strain) micro-elastograms and quantitative (elasticity) micro-elastograms, acquired in 10 minutes. We demonstrate that wide-field quantitative micro-elastography can extend the range of tumors visible using OCT-based elastography by providing contrast not present in either OCT or qualitative micro-elastography and, in addition, can reduce imaging artifacts caused by a lack of contact between tissue and the imaging window. Also, we describe how the combined evaluation of OCT, qualitative micro-elastograms and quantitative micro-elastograms can improve the visualization of tumor.