I. Introduction
The use of machine learning (ML) [1 –3] has a hugely positive effect on all parts of medical imaging. For example, medical image analysis, CAD [4–7], and radiomics all benefit greatly from the application of ML [1–3]. This is because even fundamental elements of medical imaging, such as tumours and organs, may be too complex to be depicted by a straightforward equation or model. This explains why everything is the way it is. While polyps in the colon seem like little balls, lesions in the colorectal region might look like flat areas [8, 9]. For an adequate description of the situation, a model with several parameters is required. There are too many variables for the calculation to be done manually. Due to the high degree of complexity in medical imaging model parameters, "learning from data" is a crucial technique. Therefore, it is not surprising that ML plays a significant role in diagnostic imaging for the medical field.