This document summarizes a study on the radiation dose assessment of a security screening device called the Soter RS. It finds that the effective radiation dose per scan is approximately 3 microsieverts, which is much lower than other medical imaging techniques like chest x-rays. While the risk to any individual is low, frequent or indiscriminate use could result in unnecessary radiation exposure. Proper training and regulatory controls are needed to ensure safe operation and optimize the security benefits versus radiation risks.