Improving image quality, one step at a time
O-MAR is an iterative process that improves the image step by step. First, O-MAR identifies which pixels in the image belong to the orthopedic implant. If no sufficiently large clusters of metal pixels are present in the image, no further processing is performed – O-MAR has no effect on non-metal images and is not applied to stents or similar small metal objects.
Second, the algorithm enters its iterative loop. Each repetition of the process subtracts a correction image from the input image. The resulting image can then become the new input image, refining the results. Though O-MAR does not totally eliminate metal artifacts, it can reduce their effect on CT images to significantly enhance their diagnostic quality.