A display unit for an X-ray system, comprising: - a data communication interface; - a processing unit; and - a display output unit comprising a projection unit; wherein the data communication interface is configured to obtain first X-ray image data of a first portion of a region of interest of an object using an X-ray imager, wherein the first X-ray image data is obtained using an X-ray imager having an adjustable field of view set to an initial field of view state; wherein the processing unit is configured to analyse the first X-ray image data to identify a boundary error in the first X-ray image data, to define a boundary error region contiguous to the first X-ray image data based on the analysis of the first X-ray image data; and to generate a boundary error indication based on the defined boundary error region; characterized in that the display output unit is configured to display the boundary error indication to a user by projecting the boundary error indication onto a second portion of the region of interest of the object using the projection unit; and that the processing unit is further configured to calculate updated field of view state parameters based on coordinates of the boundary error region for the acquisition of second X-ray image data of the object using the X-ray imager. - a data communication interface; - a processing unit; and - a display output unit comprising a projection unit; wherein the data communication interface is configured to obtain first X-ray image data of a first portion of a region of interest of an object using an X-ray imager, wherein the first X-ray image data is obtained using an X-ray imager having an adjustable field of view set to an initial field of view state; wherein the processing unit is configured to analyse the first X-ray image data to identify a boundary error in the first X-ray image data, to define a boundary error region contiguous to the first X-ray image data based on the analysis of the first X-ray image data; and to generate a boundary error indication based on the defined boundary error region; characterized in that the display output unit is configured to display the boundary error indication to a user by projecting the boundary error indication onto a second portion of the region of interest of the object using the projection unit; and that the processing unit is further configured to calculate updated field of view state parameters based on coordinates of the boundary error region for the acquisition of second X-ray image data of the object using the X-ray imager. wherein the data communication interface is configured to obtain first X-ray image data of a first portion of a region of interest of an object using an X-ray imager, wherein the first X-ray image data is obtained using an X-ray imager having an adjustable field of view set to an initial field of view state; wherein the processing unit is configured to analyse the first X-ray image data to identify a boundary error in the first X-ray image data, to define a boundary error region contiguous to the first X-ray image data based on the analysis of the first X-ray image data; and to generate a boundary error indication based on the defined boundary error region; characterized in that the display output unit is configured to display the boundary error indication to a user by projecting the boundary error indication onto a second portion of the region of interest of the object using the projection unit; and that the processing unit is further configured to calculate updated field of view state parameters based on coordinates of the boundary error region for the acquisition of second X-ray image data of the object using the X-ray imager.