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Full-Text Articles in Medicine and Health Sciences
Grid-Based Fourier Transform Phase Contrast Imaging, Sajjad Tahir
Grid-Based Fourier Transform Phase Contrast Imaging, Sajjad Tahir
Legacy Theses & Dissertations (2009 - 2024)
Low contrast in x-ray attenuation imaging between different materials of low electron density is a limitation of traditional x-ray radiography. Phase contrast imaging offers the potential to improve the contrast between such materials, but due to the requirements on the spatial coherence of the x-ray beam, practical implementation of such systems with tabletop (i.e. non-synchrotron) sources has been limited. One recently developed phase imaging technique employs multiple fine-pitched gratings. However, the strict manufacturing tolerances and precise alignment requirements have limited the widespread adoption of grating-based techniques. In this work, we have investigated a technique recently demonstrated by Bennett et al.1 …
Plasmablastic Lymphoma Of The Oral Cavity With Breast Recurrence: A Case Report, Zarka Samoon, Romana Idrees, Nehal Masood, Tayyaba Zehra Ansari
Plasmablastic Lymphoma Of The Oral Cavity With Breast Recurrence: A Case Report, Zarka Samoon, Romana Idrees, Nehal Masood, Tayyaba Zehra Ansari
Department of Radiation Oncology
Background: Plasmablastic lymphoma is an aggressive variant of diffuse large B cell lymphoma, mostly found in the oral cavity and associated with human immunodeficiency virus. There are no clear guidelines for its treatment. Therapies more intensive than cyclophosphamide, doxorubicin, vincristine, and prednisone are not associated with a prolonged survival. Lymphomas of the breast are rare, in one series representing 0.14% of all female breast malignancies, with diffuse large B cell lymphoma comprising up to 55% of all cases. Only one case of plasmablastic lymphoma involving the breast has been reported in the literature.CASE PRESENTATION: A 30 year old Pakistani woman, …