C.T. has made a great contribution to detecting and diagnosing patients' diseases. C.T., before being applied to patients, must pass quality assurance and control with phantom. However, the availability of phantoms is still minimal because of their high price. His study aims to create and evaluate cylindrical phantoms for quality assurance and control procedures based on image quality and dose parameters. The research method involves creating an image-quality phantom design that references the CatPhan phantom using Sketchup. The results show that the phantom image provides results from the standard phantom; the SNR, CNR, MTF, noise, and MTF values of the ImDose phantom are still within the standard phantom criteria. Based on statistical tests, the image quality of SNR, CNR, MTF, NPS, and noise is not statistically significantly different from the standard phantom (p > 0.05). The uniformity value still needs to be improved because it has a significant difference from the standard phantom with an ap value <0.05. Increasing the voltage and current gave results proportional to improving image quality and dose. ImDose phantoms for quality assurance and C.T. control have been successfully developed.