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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
K. Wong, B. Erdelyi
Nuclear Technology | Volume 175 | Number 1 | July 2011 | Pages 40-47
Technical Paper | Special Issue on the 16th Biennial Topical Meeting of the Radiation Protection and Shielding Division / Radiation Transport and Protection | doi.org/10.13182/NT11-A12267
Articles are hosted by Taylor and Francis Online.
Proton computed tomography (pCT) has become a lively research field in medical imaging. Its importance lies in its ability to accurately locate the Bragg peak where the tumor is positioned for proton therapy treatment planning. The quality of the pCT image is primarily affected by the spatial resolution and relative electron density resolution. A measure of the spatial resolution is the amount of expected deviation of the actual proton paths from the theoretically derived paths based on the experimentally available data, the so-called most likely paths (MLPs). The MLPs are derived using the assumption that the object to be imaged is homogeneous water. Geant4 Monte Carlo simulations were used to simulate the actual proton paths through some inhomogeneous phantoms and were compared with MLP calculations. Statistical analyses were conducted to determine the spatial resolution of the protons in different phantoms as a function of inhomogeneity location, amount, and density.