Cone beam computed tomography for percutaneous nephrolithotomy: initial evaluation of a new technology
Ornob P Roy1, John F Angle, Alan D Jenkins
1Department of Urology, University of Virginia Health System, Charlottesville, Virginia, USA. oroyuro@gmail.com
Journal of Endourology
|February 3, 2012
Summary
Cone beam CT (CBCT) offers improved preoperative imaging for better percutaneous nephrolithotomy (PCNL) access. Postoperative CBCT may reduce the need for further imaging and procedures for residual stones.
Area of Science:
- Medical Imaging
- Urology
- Surgical Technology
Background:
- Cone beam CT (CBCT) is an advanced imaging technique combining C-arm versatility with cross-sectional capabilities.
- Percutaneous nephrolithotomy (PCNL) is a common procedure for kidney stone removal.
Purpose of the Study:
- To evaluate CBCT's effectiveness in guiding percutaneous access for PCNL.
- To assess CBCT's utility in identifying residual stone fragments post-PCNL.
Main Methods:
- Retrospective analysis of 52 PCNL cases using CBCT for preoperative planning and 26 cases for postoperative evaluation.
- Comparison of CBCT with conventional CT for stone fragment detection.
- Evaluation of CBCT's impact on percutaneous access and postoperative management decisions.
Main Results:
- CBCT altered percutaneous access in 8 out of 52 cases.
- Conventional CT identified more small fragments (<2 mm) postoperatively.
- Postoperative management recommendations based on imaging concurred in 22 of 26 cases.
Conclusions:
- CBCT shows potential for enhancing preoperative planning and improving percutaneous access in PCNL.
- Intraoperative CBCT may offer real-time, CT-quality images, potentially reducing the need for separate postoperative imaging and interventions for residual fragments.
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