Abstract

With the continual use of CT imagers in medical imaging, there's an imperative need to ensure that the image quality remains consistent and optimal for accurate diagnosis. This study evaluates the performance of a CT imager over a span of 5 years using an image quality phantom. Objective: To analyze the degradation, if any, in the performance of a CT imager over 5 years and to understand the effectiveness of image quality phantoms in assessing machine performance. Methods: The image quality phantom was scanned using the CT imager under study at regular intervals over 5 years. Parameters such as spatial resolution, contrast, noise, and uniformity were evaluated. Data from initial scans served as the baseline against which subsequent data was compared. Results: Over the 5-year period, there was a slight decrease in spatial resolution and contrast, but the changes were within acceptable clinical thresholds. Uniformity remained consistent, while noise showed a marginal increase. Conclusion: The CT imager demonstrated reliable performance over a span of 5 years. The image quality phantom proved to be an effective tool for periodic assessments of CT imager performance, ensuring that any deviations from optimal functioning are promptly detected and addressed.

Description