Search

Your search keyword '"Prewett E."' showing total 3 results
Start Over Author "Prewett E." Database Academic Search Index
3 results on '"Prewett E."'

1. ULTRASONIC IMAGING TECHNIQUES FOR BREAST CANCER DETECTION.

Author

Goulding, N. R., Marquez, J. D., Prewett, E. M., Claytor, T. N., and Nadler, B. R.

Subjects
*ULTRASONIC imaging, *ACOUSTIC imaging, *BREAST cancer diagnosis, *DIAGNOSTIC ultrasonic imaging, *DIAGNOSTIC imaging, *MEDICAL imaging systems, *IMAGE reconstruction, *IMAGE processing
Abstract

Improving the resolution and specificity of current ultrasonic imaging technology is needed to enhance its relevance to breast cancer detection. A novel ultrasonic imaging reconstruction method is described that exploits classical straight-ray migration. This novel method improves signal processing for better image resolution and uses novel staging hardware options using a pulse-echo approach. A breast phantom with various inclusions is imaged using the classical migration method and is compared to standard computed tomography (CT) scans. These innovative ultrasonic methods incorporate ultrasound data acquisition, beam profile characterization, and image reconstruction. For an ultrasonic frequency of 2.25 MHz, imaged inclusions of approximately 1 cm are resolved and identified. Better resolution is expected with minor modifications. Improved image quality and resolution enables earlier detection and more accurate diagnoses of tumors thus reducing the number of biopsies performed, increasing treatment options, and lowering remission percentages. Using these new techniques the inclusions in the phantom are resolved and compared to the results of standard methods. Refinement of this application using other imaging techniques such as time-reversal mirrors (TRM), synthetic aperture focusing technique (SAFT), decomposition of the time reversal operator (DORT), and factorization methods is also discussed. [ABSTRACT FROM AUTHOR]

Published
2008
Full Text
View/download PDF

2. Constrictive pericarditis and primary effusion lymphoma following allogeneic BMT for CML.

Author

Rose, H, Kulik, M, Standish, R, Prewett, E, McLennan, R, Szer, J, and Campbell, P

Subjects
*LETTERS to the editor, *HOMOGRAFTS, *PERICARDITIS
Abstract

A letter to the editor is presented which discusses the medical case of a 42-year-old Italian man who underwent a sibling allograft for chronic myelogenous leukemia (CML) and develops primary effusion lymphoma and constrictive pericarditis (CP).

Published
2012
Full Text
View/download PDF

3. Influence of food and lifestyle on the risk of developing inflammatory bowel disease.

Author

Niewiadomski, O., Studd, C., Wilson, J., Williams, J., Hair, C., Knight, R., Prewett, E., Dabkowski, P., Alexander, S., Allen, B., Dowling, D., Connell, W., Desmond, P., and Bell, S.

Subjects
*BREAKFASTS, *COFFEE, *CONFIDENCE intervals, *CROHN'S disease, *INFLAMMATORY bowel diseases, *LONGITUDINAL method, *CASE studies, *SMOKING, *SURVEYS, *ULCERATIVE colitis, *LOGISTIC regression analysis, *ENVIRONMENTAL exposure, *ODDS ratio, *POPULATION-based case control
Abstract

Background The Barwon area in Australia has one of the highest incidence rates of inflammatory bowel disease ( IBD) and therefore is an ideal location to study the impact of environmental exposures on the disease's development. Aim To study these exposures prior to the development of IBD in a population-based cohort. Method One hundred and thirty-two incident cases (81 Crohn disease ( CD) and 51 ulcerative colitis ( UC)) from an IBD registry and 104 controls replied to the International Organization of Inflammatory Bowel Diseases environmental questionnaire. This included 87 questions about pre-illness exposures that included childhood illnesses, vaccinations, breastfeeding, house amenities, pets and swimming, diet and smoking. Results The factors associated with CD included smoking (odds ratio ( OR): 1.42, confidence interval ( CI): 1-2.02, P = 0.029); childhood events, including tonsillectomy ( OR: 1.74, CI: 1.15-2.6, P = 0.003) and chicken pox infection ( OR: 3.89, CI: 1.61-9.4, P = 0.005) and pre-diagnosis intake of frequent fast food ( OR: 2.26, CI: 1.76-4.33, P = 0.003). In UC, the risk factors included smoking ( OR: 1.39, CI: 1.1-1.92, P = 0.026) and pre-diagnosis intake of frequent fast food ( OR: 2.91, CI: 1.54-5.58, P < 0.001), and high caffeine intake was protective ( OR: 0.51, 95% CI: 0.3-0.87, P = 0.002). Other protective exposures for UC included high fruit intake ( OR: 0.59, CI: 0.4-0.88, P = 0.003) and having pets as a child ( OR: 0.36, CI: 0.2-0.79, P = 0.001). Conclusion This first Australian population-based study of environmental risk factors confirms that smoking, childhood immunological events and dietary factors play a role in IBD development; while high caffeine intake and pet ownership offer a protective effect. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results