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J Comput Assist Tomogr 1998 May-Jun; 22(3): 459-70 Accuracy of object depiction and opacity transfer function optimization in CT volume-rendered images. Jani AB, Pelizzari CA, Chen GT, Grzeszczuk RP Volume rendering is a visualization technique that has important applications in diagnostic radiology and radiotherapy. A methodology is presented for (a) evaluation of the quantitative accuracy of representation of known objects in volume-rendered scenes and for (b) optimization of the opacity transfer function to achieve the most accurate representation of a particular structure. Results using this methodology are shown for structures representing each of the major tissue interfaces and are discussed. |