CT scanner quality control using a quality assurance phantom and a PMMA phantom

Background: The American Association of Physics in Medicine recommends using a specific phantom for quality control and to evaluate the operation of the CT scanner. The current studies' objectives were to determine the multi- slice Philips CT scanner's performance through rigorous quality control testing. Image quality was estimated using a quality assurance CT phantom and radiation dose was assessed using a PMMA head and a PMMA body phantom with a 100mm pencil chamber. The image quality performance parameters that were tested were CT image noise, uniformity, CT number accuracy, and resolution. The radiation dose performance parameters that were evaluated were volume computed tomography dose index (CTDIvol), and dose length product (DLP). Result: The results of the present study were all image quality and CT dose index parameters tested within the acceptable standard limits. The CT radiation dose parameter and image quality test were accepted because they were within the tolerance values. Conclusion: All CT scanners must pass the CT quality control test in order for their performance to be improved.