Needle Trajectory and Tip Localization in Real-Time 3-D Ultrasound Using a Moving Stylus
| Autor: | Victoria A. Lessoway, Gary C. Ng, Parmida Beigi, Tim Salcudean, Robert Rohling |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_specialty
Materials science Acoustics and Ultrasonics 0206 medical engineering Biophysics Image processing 02 engineering and technology Sensitivity and Specificity 030218 nuclear medicine & medical imaging Injections 03 medical and health sciences 0302 clinical medicine Imaging Three-Dimensional Computer Systems Fiducial Markers medicine Radiology Nuclear Medicine and imaging Endoscopic Ultrasound-Guided Fine Needle Aspiration Ultrasonography Interventional Radiological and Ultrasound Technology business.industry Phantoms Imaging Ultrasound Echogenicity Reproducibility of Results Equipment Design Micro-Electrical-Mechanical Systems 020601 biomedical engineering Cannula Intensity (physics) Surgery Equipment Failure Analysis Needles Trajectory Ultrasonic sensor business Stylus Biomedical engineering |
| Zdroj: | Ultrasound in medicinebiology. 41(7) |
| ISSN: | 1879-291X |
| Popis: | Described here is a novel approach to needle localization in 3-D ultrasound based on automatic detection of small changes in appearance on movement of the needle stylus. By stylus oscillation, including its full insertion into the cannula to the tip, the image processing techniques can localize the needle trajectory and the tip in the 3-D ultrasound volume. The 3-D needle localization task is reduced to two 2-D localizations using orthogonal projections. To evaluate our method, we tested it on three different ex vivo tissue types, and the preliminary results indicated that the method accuracy lies within clinical acceptance, with average error ranges of 0.9°-1.4° in needle trajectory and 0.8-1.1 mm in needle tip. Results also indicate that method performance is independent of the echogenicity of the tissue. This technique is a safe way of producing ultrasonic intensity changes and appears to introduce negligible risk to the patient, as the outer cannula remains fixed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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