Tissue segmentation in MR images for stereoscopic display

The demand for clinically useful three-dimensional (3D) reconstruction techniques is increasing. Data were obtained from thin-partition 3D acquisitions using the FISP and FLASH gradient echo techniques which allow the user to select the radio frequency flip angle that will optimize contrast between tissues. Our processing algorithm applies a segmentation technique based on tissue region-growing. The user can specify a single point on a single section within the acquired volume to initiate the region-growing process. Features include 3D reconstruction of regions, depth-encoded surface display, arbitrary angle viewing, volume calculations, and stereoscopic display. This technique is useful in assessing the full extent of tissues with a complex 3D geometry and should be of value for surgical planning