Quantitative spectral reflectance imaging device for intraoperative breast tumor margin assessment.

Published

Journal Article

Diffuse reflectance spectroscopy of tissue allows quantification of underlying physiological and morphological changes associated with cancer, provided that the absorption and scattering properties of the tissue can be effectively decoupled. A particular application of interest for tissue reflectance spectroscopy in the UV-VIS is intraoperative detection of residual cancer at the margins of excised breast tumors, which could prevent costly and unnecessary repeat surgeries. Our multi-disciplinary group has developed an optical imaging device, which employs a model-based algorithm for quantification of tissue optical properties, and is capable of surveying the entire specimen surface down to a depth of 1-2 mm, all within a short time as required for intraoperative use. In an ongoing IRB-approved study, reflectance spectral images were acquired from 55 margins in 48 patients. Conversion of the spectral images to quantitative tissue parameter maps was facilitated by a fast scalable inverse Monte-Carlo model. Data from margin parameter images were reduced to image-descriptive scalar values and compared to gold-standard margin pathology. Use of a decision-tree based classification algorithm on the two most significant optical parameters resulted in a sensitivity of 79% and specificity of 67% for detection of residual tumor of all pathologic variants, with an 89% sensitivity for ductal carcinoma in situ alone. Preliminary data from this ongoing clinical study suggest that this technology could significantly reduce the number of unnecessary repeat breast conserving surgeries annually.

Full Text

Duke Authors

Cited Authors

  • Ramanujam, N; Brown, J; Bydlon, TM; Kennedy, SA; Richards, LM; Junker, MK; Gallagher, J; Barry, WT; Wilke, LG; Geradts, J

Published Date

  • 2009

Published In

  • Annu Int Conf Ieee Eng Med Biol Soc

Volume / Issue

  • 2009 /

Start / End Page

  • 6554 - 6556

PubMed ID

  • 19964903

Pubmed Central ID

  • 19964903

International Standard Serial Number (ISSN)

  • 2375-7477

Digital Object Identifier (DOI)

  • 10.1109/IEMBS.2009.5334501

Language

  • eng

Conference Location

  • United States