Volumetric modeling in laser BPH therapy simulation

Nan Zhang, Xiangmin Zhou, Yunhe Shen, Rob Sweet

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


In this paper, we introduce a novel application of volume modeling techniques on laser Benign Prostatic Hyperplasia (BPH) therapy simulation. The core technique in our system is an algorithm for simulating the tissue vaporization process by laser heating. Different from classical volume CSG operations, our technique takes experimental data as the guidance to determine the vaporization amount so that only a specified amount of tissue is vaporized in each time. Our algorithm uses a predictor-corrector strategy. First, we apply the classical CSG algorithm on a tetrahedral grid based distance field to estimate the vaporized tissue amount. Then, a volume-correction phase is applied on the distance field. To improve the performance, we further propose optimization approaches for efficient implementation.

Original languageEnglish (US)
Article number5613481
Pages (from-to)1405-1412
Number of pages8
JournalIEEE Transactions on Visualization and Computer Graphics
Issue number6
StatePublished - 2010

Bibliographical note

Funding Information:
The authors wish to thank the anonymous reviewers for their invaluable help in improving this paper, and Daniel Burke for his artistic work in modeling the virtual objects. This project is partially supported by American Medical Systems Inc.


  • Volume modeling
  • controlled-volume vaporization
  • laser BPH simulator
  • medical simulation
  • volume CSG


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