Siva Teja Kakileti

Extraction of medically interpretable features for classification of malignancy in breast thermography

Thermography, with high-resolution cameras, is being re-investigated as a possible breast cancer screening imaging modality, as it does not have the harmful radiation effects of mammography. This paper focuses on automatic extraction of medically interpretable non-vascular thermal features. We design these features to differentiate malignancy from different non-malignancy conditions, including hormone sensitive tissues and certain benign conditions, which have an increased thermal response. These features increase the specificity for breast cancer screening, which had been a long known problem in thermographic screening, while retaining high sensitivity. These features are also agnostic to different cameras and resolutions (up to an extent). On a dataset of around 78 subjects with cancer and 187 subjects without cancer, that have some benign diseases and conditions with thermal responses, we are able to get around 99% specificity while having 100% sensitivity. This indicates a potential break-through in thermographic screening for breast cancer. This shows promise for undertaking a comparison to mammography with larger numbers of subjects with more data variations.Thermography, with high-resolution cameras, is being re-investigated as a possible breast cancer screening imaging modality, as it does not have the harmful radiation effects of mammography. This paper focuses on automatic extraction of medically interpretable non-vascular thermal features. We design these features to differentiate malignancy from different non-malignancy conditions, including hormone sensitive tissues and certain benign conditions, which have an increased thermal response. These features increase the specificity for breast cancer screening, which had been a long known problem in thermographic screening, while retaining high sensitivity. These features are also agnostic to different cameras and resolutions (up to an extent). On a dataset of around 78 subjects with cancer and 187 subjects without cancer, that have some benign diseases and conditions with thermal responses, we are able to get around 99% specificity while having 100% sensitivity. This indicates a potential break-through in thermographic screening for breast cancer. This shows promise for undertaking a comparison to mammography with larger numbers of subjects with more data variations.

Automatic Determination of Hormone Receptor Status in Breast Cancer Using Thermography

Estrogren and progesterone hormone receptor status play a role in the treatment planning and prognosis of breast cancer. These are typically found after Immuno-Histo-Chemistry (IHC) analysis of the tumor tissues after surgery. Since breast cancer and hormone receptor status affect thermographic images, we attempt to estimate the hormone receptor status before surgery through non-invasive thermographic imaging. We automatically extract novel features from the thermographic images that would differentiate hormone receptor positive tumors from hormone receptor negative tumors, and classify them though machine learning. We obtained a good accuracy of 82 % and 79 % in classification of HR\(+\) and HR− tumors, respectively, on a dataset consisting of 56 subjects with breast cancer. This shows a novel application of automatic thermographic classification in breast cancer prognosis.