Abstract: A method is disclosed for computer-based evaluation of a basic image dataset including a number of image slices on an evaluation device. In at least one embodiment, at least one three-dimensional reconstruction dataset is determined from the basic image dataset by way of the evaluation device, wherein within the framework of an evaluation application of multiplanar reconstruction for a requested presentation of the reconstruction dataset in an original image layer plane, the corresponding unprocessed slice image of the basic image dataset is displayed and at least one image processing tool applied within the framework of the multiplanar reconstruction is applied to the three-dimensional reconstruction dataset.