The invention relates to a method for the quantification of the image quality of at least one tomographic picture of an object, wherein at least one tomographic cross-sectional image is produced using a cross-sectional imaging method, in particular a magnetic resonance tomography method. As a measure of the image quality in a cross-sectional image, an image detail is measured, in particular the width of a boundary between two adjacent areas is determined, in particular with the signal intensity remaining constant in each such area, in particular said signal intensity remaining constant at least within predetermined/predeterminable boundaries. The invention further relates to a method for the motion-synchronized capture of at least one tomographic picture of an object, wherein at least one tomographic cross-sectional image is produced using a cross-sectional imaging method, in particular a magnetic resonance tomography method, wherein for a plurality of cross-sectional images of the same layer that are produced in a time-dependent manner, a measure of a detail, in particular the width of the boundary between two areas in at least one viewed direction is determined in a time-dependent manner. From the determined time-dependent measure, at least one time is determined for synchronizing and/or triggering a cross-sectional image capture device on a living organ, in particular the heart. The invention further relates to a cross-sectional image capture device designed to execute such a method.
