Image Archive

A computer modeling tool for comparing novel ICD electrode orientations in children and adults. Top Row: Examples of nonstandard subcutaneous, epicardial, and transvenous electrode orientations. Left: Infraclavicular can with single subcutaneous electrode. Middle: Abdominal can with epicardial lead. Right: Infraclavicular can with superior vena cava and right ventricular transvenous electrode as well as left subcutaneous electrode.
Bottom Row: User interface for electrode placement. A subcutaneous electrode (red) extending left posterior with right abdominal can (green) is shown in a 2-year-old torso shown in 2 views used while placing electrodes in a finite element model. Moveable cutting planes allow the user to examine anatomical detail during electrode placement. The blue spheres on the red electrode and bounding cage on the can indicate handles for user interaction. Electrodes can be placed with similar precision in epicardial and transvenous orientations.
3D Segmentation were done with the EM-Segmenter in Slicer3 and bioelectric field simulation and visualization is done with SCIRun/BioPSE.
This image is featured on the cover of the April 2008 issue of the Heart Rhythm Journal. Read more here

Diffusion tensor imaging tractography.: Upper left panel: Fiber tractography combined with sagittal and axial slices from a fractional anisotropy map computed with 3DSlicer. Upper right panel: Fiber tracts generated from regions of interest in the posterotemporal lobe (yellow), splenium of the corpus callosum (pink), and temporal stem (green). Lower right panel: Three- dimensional visualization of the computed trajectory of the inferior occipitofrontal fasciculus bundle (red). Read more here

Atlas guided identification of brain structures by combining 3D segmentation and SVM classification: The upper row presents classification results projected on a 2D T1 slice. The lower row demonstrates a 3D view of the results. Read more here

Screen shots of the segmentation software, the 3D Slicer: Sagittal slice of the knee with segmented femur and tibial cartilage (a). 3D models of the femur and tibial cartilage (b). Zoom view of the segmented region, (femur cartilage is pink, the tibia cartilage is orange). The zoom view offers the possibility of precise, pixel by pixel segmentation. Read more here

Patient with Mixed Oligoastrocytoma: The fMRI activation (blue) displayed from the active left-hand motor task. Because the local maximum was several millimeters below the cortical surface, the model of the cortical surface was rendered to be transparent, revealing the lesion (pink mass). The positive ECS sites are depicted in red, negative ECS sites in green and electrodes in yellow. Read more here

Patient with Ganglioglioma: Three-dimensional visualization is helpful for navigation during neurosurgical procedures. This image was generated in Slicer3 by postprocessing and combining information from several MR acquisitions. The brain tumor is colored green, the vessels are red, the ventricles are blue. White matter tracts are colored in yellow. A 3D model of the brain provides anatomical context. Read more here