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• W2123795787 abstract "Purpose To investigate the potential role of optical tomography in the near-infrared (NIR) spectrum with ultrasonographic (US) localization as a means of differentiating early-stage cancers from benign lesions of the breast. Materials and Methods The protocol was approved by the institutional review boards and was HIPAA compliant; all participants signed an informed consent. One hundred seventy-eight consecutive women (mean age, 52 years; range, 21–89 years) who underwent US-guided biopsy were imaged with a hand-held probe consisting of a coregistered US transducer and an NIR imager. The lesion location provided by coregistered US was used to guide optical imaging. Light absorption was measured at two optical wavelengths. From this measurement, tumor angiogenesis was assessed on the basis of calculated total hemoglobin concentration (tHb) and was correlated with core biopsy results. For patients diagnosed with carcinomas and followed up with subsequent excision, the tHb was correlated with pathologic parameters. Results There were two in situ carcinomas (Tis), 35 T1 carcinomas, 24 T2–T4 carcinomas, and 114 benign lesions. The mean maximum and mean average tHb of the Tis–T1 group were 102.0 μmol/L ± 28.5 (standard deviation) and 71.9 μmol/L ± 18.8, and those of the T2–T4 group were 100.3 μmol/L ± 26.4 and 67.0 μmol/L ± 18.3, respectively. The mean maximum and mean average tHb of the benign group were 55.1 μmol/L ± 22.7 and 39.1 μmol/L ± 14.9, respectively. Both mean maximum and mean average tHb levels were significantly higher in the malignant groups than they were in the benign group (P < .001). The sensitivity, specificity, positive predictive value, and negative predictive value for Tis–T1 cancers were 92%, 93%, 81%, and 97%. The corresponding values for T2–T4 tumors were 75%, 93%, 69%, and 95%. Conclusion The angiogenesis (tHb) contrast imaged by using the NIR technique with US holds promise as an adjunct to mammography and US for distinguishing early-stage invasive breast cancers from benign lesions. © RSNA, 2010 Supplemental material: http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.10091237/-/DC1" @default.
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• W2123795787 date "2010-08-01" @default.
• W2123795787 modified "2023-10-17" @default.
• W2123795787 title "Early-Stage Invasive Breast Cancers: Potential Role of Optical Tomography with US Localization in Assisting Diagnosis" @default.
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• W2123795787 doi "https://doi.org/10.1148/radiol.10091237" @default.
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