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Virtual pyeloscopy using volurnetric depth peeling
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DOI：10.1016/j.acra.2006.02.042.png)
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Rationale and Objectives. The aim of the study is to test a new volume-rendering method, volumetric depth peeling (VDP), for use in virtual pyeloscopy. Materials and Methods. VDP was applied to axial contrast-enhanced source computed tomographic (CT) images and coronal reformatted maximum intensity projections of three contrast-filled gloves containing objects of varying density. Similar renderings were performed on CT urograms performed to evaluate hematuria (n = 20). Renderings were assessed for anatomic appearance of ureters and specific calyces in comparison with source images. Results. Objects of soft-tissue and calcific density ranging in size from 4 to 20 nun were identified by using VDP within the glove phantoms. Normal and deformed renal calyces were well visualized by using VDP; however, two stones were not identified. The minimal ureteral width that could be visualized was 3 rum. Conclusion. VDP may be a useful technique for virtual pyeloscopy providing that a robust and user-friendly computer interface can be developed.
Keyword:
volume rendering
kidneys
期刊
IF:
3.9
论文数:
8.8K
被引数:
1.0W
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