Microwave Catheter Navigation System for the Radiofrequency Liver Ablation
Thermal ablation is a well-known method used in interventional radiology to treat cancer. The treatment success is closely related to the exact catheter location in the treated area. Current navigation methods are based mostly on ultrasound or computed tomography. This work explores the possibility...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Cancers |
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| Online Access: | https://www.mdpi.com/2072-6694/14/21/5296 |
| _version_ | 1797468870857981952 |
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| author | Jakub Kollar Tomas Drizdal Jan Vrba David Vrba Tomas Pokorny Marek Novak Ondrej Fiser |
| author_facet | Jakub Kollar Tomas Drizdal Jan Vrba David Vrba Tomas Pokorny Marek Novak Ondrej Fiser |
| author_sort | Jakub Kollar |
| collection | DOAJ |
| description | Thermal ablation is a well-known method used in interventional radiology to treat cancer. The treatment success is closely related to the exact catheter location in the treated area. Current navigation methods are based mostly on ultrasound or computed tomography. This work explores the possibility of tracking the catheter position during ablation treatment of hepatocellular carcinomas (HCC) using an ultra-wideband (UWB) antenna array and microwave radar imaging based on the “Delay and Sum” (DAS) algorithm. The feasibility was first numerically studied on a simple homogeneous liver model. A heterogeneous anthropomorphic 3D model of the treated region consisting of the main organs within the treated area was then used. Various standard radiofrequency ablation (RFA) catheters were placed virtually in the heterogeneous model. The location and orientation of the antenna elements of the developed imaging system and the applied frequency band were studied. Subsequently, an experimental setup consisting of a 3D printed homogeneous anthropomorphic model, eight UWB dipole antennas, and catheters was created and used in a series of measurements. The average accuracy determining the catheter position from simulated and experimental data was 3.88 ± 0.19 and 6.13 ± 0.66 mm, which are close to the accuracy of clinical navigation systems. |
| first_indexed | 2024-03-09T19:12:26Z |
| format | Article |
| id | doaj.art-a2e6684f220748e9a30bda28dec10990 |
| institution | Directory Open Access Journal |
| issn | 2072-6694 |
| language | English |
| last_indexed | 2024-03-09T19:12:26Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Cancers |
| spelling | doaj.art-a2e6684f220748e9a30bda28dec109902023-11-24T04:02:10ZengMDPI AGCancers2072-66942022-10-011421529610.3390/cancers14215296Microwave Catheter Navigation System for the Radiofrequency Liver AblationJakub Kollar0Tomas Drizdal1Jan Vrba2David Vrba3Tomas Pokorny4Marek Novak5Ondrej Fiser6Faculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech RepublicThermal ablation is a well-known method used in interventional radiology to treat cancer. The treatment success is closely related to the exact catheter location in the treated area. Current navigation methods are based mostly on ultrasound or computed tomography. This work explores the possibility of tracking the catheter position during ablation treatment of hepatocellular carcinomas (HCC) using an ultra-wideband (UWB) antenna array and microwave radar imaging based on the “Delay and Sum” (DAS) algorithm. The feasibility was first numerically studied on a simple homogeneous liver model. A heterogeneous anthropomorphic 3D model of the treated region consisting of the main organs within the treated area was then used. Various standard radiofrequency ablation (RFA) catheters were placed virtually in the heterogeneous model. The location and orientation of the antenna elements of the developed imaging system and the applied frequency band were studied. Subsequently, an experimental setup consisting of a 3D printed homogeneous anthropomorphic model, eight UWB dipole antennas, and catheters was created and used in a series of measurements. The average accuracy determining the catheter position from simulated and experimental data was 3.88 ± 0.19 and 6.13 ± 0.66 mm, which are close to the accuracy of clinical navigation systems.https://www.mdpi.com/2072-6694/14/21/5296UWB radarmicrowave imagingmedical imagingcatheter position determinationradiofrequency ablationhepatocellular carcinoma |
| spellingShingle | Jakub Kollar Tomas Drizdal Jan Vrba David Vrba Tomas Pokorny Marek Novak Ondrej Fiser Microwave Catheter Navigation System for the Radiofrequency Liver Ablation Cancers UWB radar microwave imaging medical imaging catheter position determination radiofrequency ablation hepatocellular carcinoma |
| title | Microwave Catheter Navigation System for the Radiofrequency Liver Ablation |
| title_full | Microwave Catheter Navigation System for the Radiofrequency Liver Ablation |
| title_fullStr | Microwave Catheter Navigation System for the Radiofrequency Liver Ablation |
| title_full_unstemmed | Microwave Catheter Navigation System for the Radiofrequency Liver Ablation |
| title_short | Microwave Catheter Navigation System for the Radiofrequency Liver Ablation |
| title_sort | microwave catheter navigation system for the radiofrequency liver ablation |
| topic | UWB radar microwave imaging medical imaging catheter position determination radiofrequency ablation hepatocellular carcinoma |
| url | https://www.mdpi.com/2072-6694/14/21/5296 |
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