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Percutaneous abdominal and pelvic interventional procedures using CT fluoroscopy guidance.
B Daly1, T L Krebs, J J Wong-You-Cheong
1Department of Diagnostic Radiology, University of Maryland School of Medicine, University of Maryland Hospital, Baltimore 21201, USA.
AJR. American Journal of Roentgenology
|September 2, 1999
Summary
Low-milliamperage CT fluoroscopy effectively guides percutaneous abdominopelvic procedures like biopsies and drainage. This imaging technique ensures accurate needle and catheter placement, proving practical for interventional radiology.
Area of Science:
- Radiology
- Interventional Radiology
- Medical Imaging
Background:
- Percutaneous abdominopelvic procedures require precise guidance for safety and efficacy.
- Traditional imaging guidance methods may have limitations in real-time visualization.
Purpose of the Study:
- To evaluate the utility of low-milliamperage computed tomography (CT) fluoroscopy for guiding percutaneous abdominopelvic interventions.
- To assess the feasibility and effectiveness of this technique in various procedures.
Main Methods:
- Retrospective review of 97 patients undergoing 119 procedures guided by low-milliamperage CT fluoroscopy.
- Procedures included fluid aspiration/drainage, biopsy, ablation, chemoneurolysis, and brachytherapy catheter insertion.
- Real-time fluoroscopy reconstruction at six frames per second enabled direct operator control.
Main Results:
- 94.1% of procedures were successfully completed with adequate image quality for device placement.
- CT fluoroscopy facilitated rapid assessment of instrument positioning, especially in nonaxial planes.
- Average CT fluoroscopy times were 133 seconds for biopsies and 186 seconds for therapeutic procedures.
Conclusions:
- Low-milliamperage CT fluoroscopy is a practical and effective tool for percutaneous abdominal and pelvic interventional procedures.
- The technique supports accurate guidance for biopsies, drainage, and therapeutic interventions.