*The New Landscape of Diagnostic Imaging with the Incorporation of Computer Vision DOI: http://dx.doi.org/10.5772/intechopen.110133*

different sample preparation techniques that different laboratories may have. This variability is manifested in its maximum expression in computational pathology. Moreover, the most current works usually include studies with different scanners and from different hospitals to analyze the robustness of the model [124]. Another challenge that specifically affects computational pathology is the weight of each sample. As we mentioned before, the WSI of the pathology samples contains a considerable amount of pixels, especially at their highest magnification level. This makes it challenging to be able to share the images and store complete datasets. It is worth mentioning that also operating digitally with these images raises the hardware requirements to high levels. For this reason, parallelization tasks or image batch processing can become complex, which also increases processing times [130]. Finally, a crucial aspect must be addressed. Operating with medical images requires a high degree of data protection and the use of anonymization techniques. In order to use hospital data, an ethics committee must first review the scope of the project. The ethics committee will determine the degree of consent that patients must provide in order to use their data. In many retrospective studies, depending on the amount of private data being used, committees may approve the waiving of informed consent (IC). For example, if patients have already consented to the original study and no further identifying data will be added to the project, this may be a favorable setting for not requiring additional IC. However, that decision rests solely with the committee and this entity will decide the constraints of the project. Ethics committees may be slow to grant project approval, especially if the scope of the project is extensive. Also, should new ICs be required, this can also add cost and time to the project [131].
