scholarly journals Detection of Breast Cancer on Magnetic Resonance Imaging Using Hybrid Feature Extraction and Deep Neural Network Techniques

2020 ◽  
Vol 13 (6) ◽  
pp. 229-240
Author(s):  
Nagaraja Pullaiah ◽  
◽  
Dorai Venkatasekhar ◽  
Padarthi Venkatramana ◽  
Balaraj Sudhakar ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Feature Extraction ◽  
Magnetic Resonance ◽  
Breast Tissue ◽  
Early Stage ◽  
Extraction Technique ◽  
Resonance Imaging ◽  
Calcium Salts ◽  
Feature Extraction Technique

Breast cancer is one of the most occurring cancers in women due to the uncontrolled growth of abnormal cells in the lobules or milk ducts. The treatment for the breast cancer at an early stage is important using Magnetic Resonance Imaging (MRI) which effectively measures the size of the cancer and also checks tumors in the opposite breast. The deposition of calcium components on the breast tissue is known as micro-calcifications. The calcium salts deposited in the breast are involved with the cancer and were not diagnosed accurately due to the low effectiveness of existing imaging technique namely Haralick feature extraction technique. The MRI breast cancer diagnosis creates problems during classification of breast image and leads to misclassifications, such as unidentified calcium deposits in the existing K-Nearest Neighbour (KNN) classifier. The misclassification issues are overcome by an accurate classification and identification of calcium salts and checks whether deposited salt on breast tissue is involved with cancer or not. Initially, Contrast-Limited Adaptive Histogram Equalization (CLAHE) is used to remove the unwanted noise in the MRI and Morphological, Multilevel Otsu’s Thresholding and region growing techniques perform segmentation to mask unwanted breast tissues. The proposed Hybrid LOOP Haralick feature extraction technique is developed by combining the both Local Optimal Oriented Pattern (LOOP) and Haralick texture feature and the hybrid parameters are applied to the Stacked Auto Encoder based (SAE) to classify the breast MRI image as a Malignant or Benign. The performance of the proposed hybrid LOOP Haralick feature extraction shows significant accuracy improvement of 3.83% when compared to the Haralick feature extraction technique.

scholarly journals Magnetic Resonance Imaging after Breast Oncoplastic Surgery: An Update

Breast Care ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. 260-265 ◽  
Author(s):  
Silvia Gigli ◽  
Maria I. Amabile ◽  
Francesca Di Pastena ◽  
Lucia Manganaro ◽  
Emanuele David ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Local Recurrence ◽  
Early Stage ◽  
Image Interpretation ◽  
Oncoplastic Surgery ◽  
Tumor Control ◽  
Resonance Imaging

Breast-oncoplastic surgery, allowing local tumor control and a better cosmetic outcome, is oncologically safe when applied to early-stage breast cancer. Breast cancer recurrence following conservative therapy may occur during the first 5 years after treatment, with a peak incidence after 2 years. Therefore, during the follow-up period, patients undergo a series of ultrasound (US) and mammographic examinations. However, after surgery and radiation therapy, several modifications occur in the treated breast, causing difficulties in image interpretation, especially when local recurrence is suspected. Although not included in routine follow-up, magnetic resonance imaging (MRI) is often used in clinical practice, being considered more sensitive than the conventional imaging examinations in discriminating between postsurgical tissue modifications and tumor recurrence. In this review article, we analyze expected and pathologic breast MRI findings after conservative oncoplastic surgery compared to US and mammographic findings in order to distinguish local recurrence and avoid potential pitfalls in image interpretation.

scholarly journals Preoperative Breast Magnetic Resonance Imaging and Contralateral Breast Cancer Occurrence Among Older Women With Breast Cancer

2016 ◽  
Vol 34 (4) ◽  
pp. 321-328 ◽  
Author(s):  
Shi-Yi Wang ◽  
Jessica B. Long ◽  
Brigid K. Killelea ◽  
Suzanne B. Evans ◽  
Kenneth B. Roberts ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Older Women ◽  
Detection Rate ◽  
Early Stage ◽  
Hazard Ratio ◽  
Contralateral Breast ◽  
Resonance Imaging ◽  
The Impact

Purpose Preoperative magnetic resonance imaging (MRI) detects occult contralateral breast cancers (CBCs) in women with breast cancer, but the impact of detection on long-term CBC events is unclear. We examined whether MRI use decreases the occurrence of CBCs and the detection of stages II to IV disease among women who develop a CBC. Patients and Methods Analyzing the SEER-Medicare database, we assessed overall, synchronous (< 6 months after primary cancer diagnosis), and subsequent (ie, metachronous) stage-specific CBC occurrences in women who were diagnosed with stages I and II breast cancer during 2004-2009 and who were observed through 2011. Results Among 38,971 women with breast cancer, 6,377 (16.4%) received preoperative MRI. After propensity score matching, and compared with women who did not undergo MRI, preoperative MRI use was significantly associated with a higher synchronous CBC detection rate (126.4 v 42.9 per 1,000 person-years, respectively; hazard ratio, 2.85; P < .001) but a lower subsequent CBC detection rate (3.3 v 4.5 per 1,000 person-years, respectively; hazard ratio, 0.68; P = .002). However, the 5-year cumulative incidence of CBC remained significantly higher among women undergoing MRI compared with those not undergoing MRI (7.2% v 4.0%, respectively; P < .001). The analyses of projected CBC events for 10,000 patients who receive MRI indicated that, after a 5-year follow-up, MRI use would detect an additional 192 in situ CBCs (95% CI, 125 to 279) and 120 stage I CBCs (95% CI, 62 to 193) but would not have a significant impact on stages II to IV CBC occurrences (∼ 6; 95% CI, −21 to 47). Conclusion An increased synchronous CBC detection rate, attributable to MRI, was not offset by a decrease of subsequent CBC occurrence among older women with early-stage breast cancer, suggesting that preoperative MRI in women with breast cancer may lead to overdiagnosis.

scholarly journals Role of Preoperative Magnetic Resonance Imaging in the Surgical Management of Early-Stage Breast Cancer

2014 ◽  
Vol 21 (11) ◽  
pp. 3473-3480 ◽  
Author(s):  
Sheenu Chandwani ◽  
Prethibha A. George ◽  
Michelle Azu ◽  
Elisa V. Bandera ◽  
Christine B. Ambrosone ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Surgical Management ◽  
Early Stage ◽  
Early Stage Breast Cancer ◽  
Preoperative Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Preoperative Magnetic Resonance

Preoperative Breast Magnetic Resonance Imaging: Applications in Clinical Practice

2012 ◽  
Vol 63 (3) ◽  
pp. 207-214 ◽  
Author(s):  
Supriya Kulkarni ◽  
Nitin Singh ◽  
Pavel Crystal
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Breast Magnetic Resonance Imaging ◽  
Early Stage ◽  
Survival Rates ◽  
Radical Mastectomy ◽  
Breast Conserving Surgery ◽  
Resonance Imaging ◽  
Breast Magnetic Resonance

Results of large randomized trials have shown that survival rates after breast conserving surgery are equivalent to those obtained by radical mastectomy. Breast conserving surgery with wide local excision in women with early stage breast cancer who are thought to have a single and resectable tumour as determined by clinical examination and conventional imaging followed by postoperative irradiation is the standard of care in early breast cancer. Mapping of local disease is the key element to guide optimal surgery to obtain tumour-free margins, thereby decreasing risk of local recurrence. The usual preoperative workup of breast malignancy consists of clinical breast examination and mammography with or without ultrasound. However, mammography and ultrasound fail to accurately assess tumour extent in as many as a third of patients eligible for breast conserving therapy. It is well established that magnetic resonance imaging is far superior to mammography (with and without ultrasound) for mapping the local extent of breast cancer. Experts advocate its use despite its high costs, high number of false positive findings, and lack of evidence from randomized prospective trials and, notably, fear of “overtreatment.” This article discusses the current role of breast magnetic resonance imaging with its clinical advantages and applications.

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