Volume rendering of abdominal aortic aneurysms
Roger C. Tam, Christopher G. Healey, Borys Flak, Peter Cahoon · 1997
Volume rendering is a valuable and important technique for scientific visualization. One well known application area is the reconstruction and visualization of output from medical scanners like computed tomography (CT). 2D greyscale slices produced by these scanners can be reconstructed and displayed onscreen as a 3D model. Volume visualization of medical images must address two important issues. First, it is difficult to segment medical scans into individual materials based only on intensity values. This can result in volumes that contain large amounts of unimportant or unnecessary material. Second, although greyscale images are the normal method for displaying medical volumes, these types of images are not necessarily appropriate for highlighting regions of interest within the volume. Studies of the human visual systemhaveshown that individual intensity values are difficult to detect in a greyscale image. In these situations colour is a more effective visual feature, since the lowlev...