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Articles 31 - 35 of 35
Full-Text Articles in Radiology
Application Of X-Ray Diffraction To Material Analysis And Medical Imaging, Wei Zhou
Application Of X-Ray Diffraction To Material Analysis And Medical Imaging, Wei Zhou
Legacy Theses & Dissertations (2009 - 2024)
Powder diffraction is commonly used to determine the structures of both inorganic and organic materials. The angle and intensity of the diffraction (also called coherent scatter) peak depends on the nanostructure of the material. When no x-ray optic is used, the peak width broadens, and hence the resolution worsens, as the sample area is increased. However, a small sample area gives low diffracted signal intensity, particularly for thin films and for organic materials, which have low diffraction cross sections. X-ray optics can be used in x-ray powder diffraction to increase the diffraction intensity, thus decreasing exposure times. For a small …
Knowledge, Attitude And Preventive Practices For Breast Cancer Among Health Care Professionals At Aga Khan Hospital Karachi, Shiyam Kumar, Ayesha Mallick Imam, Nauman Fazal Manzoor, Nehal Masood
Knowledge, Attitude And Preventive Practices For Breast Cancer Among Health Care Professionals At Aga Khan Hospital Karachi, Shiyam Kumar, Ayesha Mallick Imam, Nauman Fazal Manzoor, Nehal Masood
Department of Radiation Oncology
OBJECTIVE: To assess the knowledge and practice of risk factors, symptoms and screening for breast cancer among health care professionals.
METHODS: A cross sectional study was carried out at The Aga Khan University Hospital from January 2008 to March 2008. A total of 336 health care workers including consultants (48), fellows (17), residents (76), medical officers (14), interns (37), nurses (94) and fourth and final year medical students (50) were requested to fill a questionnaire designed to assess the knowledge about the risk factors, signs and symptoms, screening tools, breast self examination (BSE) and treatment.
RESULTS: More than two third …
Factors Influencing Early Detection Of Breast Cancer In African American Women, Tamrah Joy Parker
Factors Influencing Early Detection Of Breast Cancer In African American Women, Tamrah Joy Parker
Nursing Theses and Capstone Projects
Background. African American women are more likely to have breast cancer diagnosed at a later stage than Caucasian women and with a five year death rate 1.5 times greater than Caucasian women. Mammography screening detects breast cancer in its early stages and can reduce mortality.
Objective. To examine factors influencing early detection of breast cancer for African American women.
Methods. A convenience sample of 39 African American women 50 years of age and older was selected from two local Baptist churches in eastern North Carolina. Eligibility criteria included ability to read and write in English with no prior or present …
Breast Cancer In Pakistan - Awareness And Early Detection, Saba Sohail, Shams Nadeem Alam
Breast Cancer In Pakistan - Awareness And Early Detection, Saba Sohail, Shams Nadeem Alam
Department of Radiology
No abstract provided.
Modular Machine Learning Methods For Computer-Aided Diagnosis Of Breast Cancer, Mia Kathleen Markey '94
Modular Machine Learning Methods For Computer-Aided Diagnosis Of Breast Cancer, Mia Kathleen Markey '94
Doctoral Dissertations
The purpose of this study was to improve breast cancer diagnosis by reducing the number of benign biopsies performed. To this end, we investigated modular and ensemble systems of machine learning methods for computer-aided diagnosis (CAD) of breast cancer. A modular system partitions the input space into smaller domains, each of which is handled by a local model. An ensemble system uses multiple models for the same cases and combines the models' predictions.
Five supervised machine learning techniques (LDA, SVM, BP-ANN, CBR, CART) were trained to predict the biopsy outcome from mammographic findings (BIRADS™) and patient age based on a …