The embodiments of the present disclosure relates to the field of telecommunication technology, and discloses a method, a device and a readable storage medium for acquiring an image. The method comprises: acquiring a first ultrasonic image of a first position of a detected object； and saving the first ultrasonic image at a second position in a three-dimensional model for the detected object that corresponds to the first position, wherein the three-dimensional model saves therein a historical ultrasonic image of the detected object acquired during one ultrasonic detection process. the method for acquiring an image according to the present embodiment expands the area of the ultrasonic image for a detected object acquired during one ultrasonic detection, by saving a ultrasonic image for a determined position of the detected object at a position in a three-dimensional model for the detected object corresponding to the determined position.
