Samuel A. Einstein
YOU?
Author Swipe
View article: Addressing the Knowledge Gap in Magnetic Resonance Imaging Physics in Türkiye: A Transcontinental Continuing Educational Initiative by the Turkish Medical Physics Association
Addressing the Knowledge Gap in Magnetic Resonance Imaging Physics in Türkiye: A Transcontinental Continuing Educational Initiative by the Turkish Medical Physics Association Open
Aim: This study aimed to address critical gaps in magnetic resonance imaging (MRI) training among medical physicists in Türkiye by developing and evaluating a structured virtual course focused on foundational and clinically relevant MRI ph…
View article: Towards mitigating radiological health disparities using virtual strategies in global medical physics education: A RAD-AID International example
Towards mitigating radiological health disparities using virtual strategies in global medical physics education: A RAD-AID International example Open
The global distribution of radiological health services is extremely heterogeneous. In the past few years, it has been shown that approximately 90% of the population in the low-income world lacks access to radiotherapy and between one-half…
View article: Hypoxia within subcutaneously implanted macroencapsulation devices limits the viability and functionality of densely loaded islets
Hypoxia within subcutaneously implanted macroencapsulation devices limits the viability and functionality of densely loaded islets Open
Introduction Subcutaneous macroencapsulation devices circumvent disadvantages of intraportal islet therapy. However, a curative dose of islets within reasonably sized devices requires dense cell packing. We measured internal PO2 of implant…
View article: Quantification and homogenization of image noise between two CT scanner models
Quantification and homogenization of image noise between two CT scanner models Open
Feedback from radiologists indicated that differences in image appearance and noise impeded reading of post‐contrast computed tomography (CT) scans from an updated CT scanner that was recently added to a fleet of existing scanners from the…
View article: Noninvasive Fluorine-19 Magnetic Resonance Relaxometry Measurement of the Partial Pressure of Oxygen in Acellular Perfluorochemical-loaded Alginate Microcapsules Implanted in the Peritoneal Cavity of Nonhuman Primates
Noninvasive Fluorine-19 Magnetic Resonance Relaxometry Measurement of the Partial Pressure of Oxygen in Acellular Perfluorochemical-loaded Alginate Microcapsules Implanted in the Peritoneal Cavity of Nonhuman Primates Open
Background. We have utilized a noninvasive technique for measuring the partial pressure of oxygen (pO 2 ) in alginate microcapsules implanted intraperitoneally in healthy nonhuman primates (NHPs). Average pO 2 is important for determining …
View article: Performance evaluation of the 5‐Ring GE Discovery MI PET/CT system using the national electrical manufacturers association NU 2‐2012 Standard
Performance evaluation of the 5‐Ring GE Discovery MI PET/CT system using the national electrical manufacturers association NU 2‐2012 Standard Open
The GE Discovery MI PET/CT system has a modular digital detector design allowing three, four, or five detector block rings that extend the axial field‐of‐view (FOV) from 15 to 25 cm in 5 cm increments. This study investigated the performan…
View article: Oxygen Sensing with Perfluorocarbon-Loaded Ultraporous Mesostructured Silica Nanoparticles
Oxygen Sensing with Perfluorocarbon-Loaded Ultraporous Mesostructured Silica Nanoparticles Open
Oxygen homeostasis is important in the regulation of biological function. Disease progression can be monitored by measuring oxygen levels, thus producing information for the design of therapeutic treatments. Noninvasive measurements of tis…
View article: Synthesis of Intrinsically Disordered Fluorinated Peptides for Modular Design of High‐Signal <sup>19</sup>F MRI Agents
Synthesis of Intrinsically Disordered Fluorinated Peptides for Modular Design of High‐Signal <sup>19</sup>F MRI Agents Open
19 F MRI is valuable for in vivo imaging due to the only trace amounts of fluorine in biological systems. Because of the low sensitivity of MRI however, designing new fluorochemicals remains a significant challenge for achieving sufficient…
View article: Noninvasive assessment of tissue‐engineered graft viability by oxygen‐17 magnetic resonance spectroscopy
Noninvasive assessment of tissue‐engineered graft viability by oxygen‐17 magnetic resonance spectroscopy Open
Transplantation of macroencapsulated tissue‐engineered grafts (TEGs) is being investigated as a treatment for type 1 diabetes, but there is a critical need to measure TEG viability both in vitro and in vivo. Oxygen deficiency is the most c…
View article: Development and Validation of Noninvasive Magnetic Resonance Relaxometry for the <i>In Vivo</i> Assessment of Tissue-Engineered Graft Oxygenation
Development and Validation of Noninvasive Magnetic Resonance Relaxometry for the <i>In Vivo</i> Assessment of Tissue-Engineered Graft Oxygenation Open
Techniques to monitor the oxygen partial pressure (pO2) within implanted tissue-engineered grafts (TEGs) are critically necessary for TEG development, but current methods are invasive and inaccurate. In this study, we developed an accurate…
View article: Development and Validation of a Multinuclear Magnetic Resonance Spectroscopy Toolkit for Bioartificial Pancreas Assessment
Development and Validation of a Multinuclear Magnetic Resonance Spectroscopy Toolkit for Bioartificial Pancreas Assessment Open
University of Minnesota Ph.D. dissertation. June 2016. Major: Biophysical Sciences and Medical Physics. Advisors: Michael Garwood, Klearchos Papas. 1 computer file (PDF); xiv, 196 pages.