Scan planes in acquisition of ultrasound images and dimensional measurements of objects represented in the images are determined by: defining a body to be examined and a predetermined orientation of the scan plane which intersects said body along which plane at least one ultrasound image is acquired; providing machine learning algorithm for verifying orientation and position of the scan plane, said algorithm trained with database of known cases which correlate image data of an image of a body previously examined and similar to said body with the position and orientation of the scan plane; reporting the scan plane does not correspond to the position and/or orientation of said predetermined scan plane; repeating the scan by changing the position and/or the orientation of the scan plane and repeating the steps as long as the position and orientation of the scan plane do not correspond to those of the predetermined scan plane.