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Published on: September 5, 2011
Localization of needle tip with color doppler during pericardiocentesis: In vitro validation and initial clinical
G Armstrong1, L Cardon, D Vilkomerson
1Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
Summary
A new ColorMark device uses color Doppler ultrasonography to guide needles in real-time during pericardiocentesis. This novel technique accurately localizes needle tips, proving feasible for guiding the procedure.
Area of Science:
- Medical Devices
- Diagnostic Imaging
- Ultrasound Technology
Background:
- Real-time image guidance for aspirating needles has been a significant challenge in medical procedures.
- Color Doppler ultrasonography offers potential for enhanced visualization during interventions.
Purpose of the Study:
- To evaluate a novel device (ColorMark) for real-time needle tip localization using color Doppler ultrasonography.
- To assess the accuracy and feasibility of this technique for guiding pericardiocentesis.
Main Methods:
- The ColorMark device induces needle vibrations for color Doppler localization.
- In vitro testing in a urethane phantom compared color Doppler accuracy with direct measurement.
- Clinical evaluation involved 25 patients undergoing pericardiocentesis.
Main Results:
- In vitro tip localization demonstrated excellent accuracy, with minimal axial and lateral errors.
- The ColorMark technique successfully identified and guided the needle in 18 of 25 patients.
- Successful, uncomplicated fluid drainage was achieved in most cases where the technique was applied.
Conclusions:
- The novel color Doppler technique provides highly accurate needle tip localization.
- The ColorMark device is feasible for guiding pericardiocentesis procedures.
- Further clinical validation is necessary to confirm the technique's broader applicability.
