An ultrasound probe acquires a 3D image dataset of a volumetric region of the body. The 3D image data is reformatted into a sequence of successive parallel image planes extending in one of three orthogonal directions through the volume. The sequence of images (74 84 94) is preferably formatted in accordance with the DICOM standard so that a clinician can review the 3D image data as a sequence of DICOM images on an image workstation. Fig.4