[Image fusion: use in the control of the distribution of prostatic biopsies]

Prog Urol. 2008 Feb;18(1 Suppl FMC):F15-8.
[Article in French]

Abstract

Prostate biopsies are performed under 2D TransRectal UltraSound (US) guidance by sampling the prostate according to a predefined pattern. Modern image processing tools allow better control of biopsy distribution. We evaluated the accuracy of a single operator performing a pattern of 12 ultrasound-guided biopsies by registering 3D ultrasound control images acquired after each biopsy. For each patient, prostate image alignment was performed automatically with a voxel-based registration algorithm allowing visualization of each biopsy trajectory in a single ultrasound reference volume. On average, the operator reached the target in 60% of all cases. This study shows that it is difficult to accurately reach targets in the prostate using 2D ultrasound. In the near future, real-time fusion of MRI and US images will allow selection of a target in previously acquired MR images and biopsy of this target by US guidance.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Aged
  • Algorithms
  • Biopsy / methods*
  • Biopsy / standards
  • Humans
  • Imaging, Three-Dimensional
  • Magnetic Resonance Imaging, Interventional
  • Male
  • Prostate / diagnostic imaging*
  • Prostate / pathology*
  • Prostate-Specific Antigen / blood
  • Quality Control
  • Ultrasonography, Interventional / methods

Substances

  • Prostate-Specific Antigen