A visual probe positioning tool for 4D ultrasound-guided radiotherapy
| Autor: | Ralf Bruder, Svenja Ipsen, Ivo Kuhlemann, Floris Ernst, Achim Schweikard, Laura Motisi, Philipp Jauer, F. Cremers |
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| Rok vydání: | 2018 |
| Předmět: |
Computer science
medicine.medical_treatment Computed tomography 030218 nuclear medicine & medical imaging Motion 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine Calibration medicine Computer vision Ultrasonography Motion compensation medicine.diagnostic_test business.industry Ultrasound Reproducibility of Results Window (computing) Visualization Visual probe Radiation therapy 030220 oncology & carcinogenesis Artificial intelligence business 4d ultrasound Radiotherapy Image-Guided |
| Zdroj: | EMBC |
| DOI: | 10.1109/embc.2018.8512390 |
| Popis: | Ultrasound (US) guidance is a rapidly growing area in image-guided radiotherapy. For motion compensation, the therapy target needs to be visualized with the US probe to continuously determine its position and adapt for shifts. While US has obvious benefits such as real-time capability and proven safety, one of the main drawbacks to date is its user dependency - high quality results require long years of clinical experience. To provide positioning assistance for the setup of US equipment by non-experts, we developed a visual guidance tool combining real-time US volume and CT visualization in a geometrically calibrated setup. By using a 4D US station with real-time data access and an optical tracking system, we achieved a calibration accuracy of 1.2 mm and a mean 2D contour distance of 1.7 mm between organ boundaries identified in US and CT. With this low calibration error as well as the good visual alignment of the structures, the developed probe positioning tool could be a valuable aid for ultrasound-guided radiotherapy and other interventions by guiding the user to a suitable acoustic window while potentially improving setup reproducibility. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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