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CT ANGIOGRAPHY WITH 3D RECONSTRUCTION AND VIRTUAL ANGIOSCOPY NEW POSSIBILITIES OF ESTIMATION OF RENAL TUMOURS VASCULARIZATION
Article published in Urologia Polska 2000/53/1.

authors

Andrzej Urbanik, Zygmunt Dobrowolski 1, Tadeusz Popiel±, Wadim Wojciechowski, Tomasz Drewniak 1
Katedra i Zakład Radiologii Collegium Medicum UJ
p.o. Kierownik Katedry: dr med. A. Urbanik
1 Katedra i Klinika Urologii Collegium Medicum UJ
Kierownik Kliniki: doc. dr hab. Z. Dobrowolski

keywords

kidney RCC CT angiography

summary

Introduction.. Thanks to the development of CT angiography, completed with
3D reconstruction and virtual angioscopy (YA), the importance of the Computer
tomography has been constantly growing. So, indications for the classical,
invasive angiography are more and more limited. The authors analyse clinical
usability of the complex angio-CT examination with the 3D reconstruction and
VA in diagnostics of renal yessels.
Material and method. 26 patients have been subjected to a CT examination of
kidneys completed with CT angiography with 3D reconstruction and VA. The
presence of a tumour was stated in all the cases. Images of classical transversal
cross-sections completed with two dimensional reconstructions in selected
planes have been examined. Afterwards 3D reconstructions with and an image
of the tumour as well as of its vascularization was made. So, the lesion and its
vascularization could be represented in a spacial way, in a form similar to
natural conditions which an operating surgeon may face.
Results. Thanks to this method the operation can be planned well and its time
may be much shorter. In selected cases, by using the option VA, an angioscopic
image of aorta was obtained and the origines of renal arteries were found,
their state was assessed and the pathological vessel was found. The CT-angio
method completed with the 3D and VA reconstruction options allows to
represent the renal yessels in a form similar to the natural one and to assess
exactly the lumen without endoscopy. With an aid of a special software you
may also dynamically move in the lumen of the yessels.
Conclusions. The described techni±ue allows to eliminate a part of classical
indications for angiography of renal tumours, following the tendency of
replacing the invasive diagnostical methods by less invasive ones.

references

  1. [1] Bartolozzi, C, Neri, E., Caramella, D.: CT in vascular pathologies. Eur.
  2. Radiol. 1998, 8, 679-684.
  3. [2] Halpern, E. J., Wechsler, R. }., DiCampli, D.: Threshold selection of CT
  4. angiography shaded surface display of the renal arteries. J. Digit. Imaging, 1995,
  5. 8, 142-147.
  6. [3] Prokop, M., Shin, H. O., Schanz, A., Schaefer-Prokop, C. M.: Use of
  7. maximum intensity projections in CT angiography: a basic review. Radiogra-
  8. phics, 1997, 17, 433-451.
  9. [4] Rubin, G. D., Beaulieu, C. F., Argiro, V. et al.: Perspective volume render-
  10. ing of CT and MR images: applications for endoscopic imaging. Radiology, 1996,
  11. 199, 321-330.
  12. [5] Rubin, G. D., Dake, M. D., Napel, S. A., McDonnell, C. H., Jeffrey,
  13. R. B. Jr.: Three-dimensional spiral CT angiography of the abdomen: initial clini-
  14. cal experience. Radiology 1993, 186, 147-152.