Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study
In this study, a microwave-induced ablation zone (thermal lesion) monitoring method based on ultrasound echo decorrelation imaging was proposed. A total of 15 cases of ex vivo porcine liver microwave ablation (MWA) experiments were carried out. Ultrasound radiofrequency (RF) signals at different tim...
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| Format: | Article |
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MDPI AG
2019-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/4/977 |
| _version_ | 1811301813234696192 |
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| author | Zhuhuang Zhou Yue Wang Shuang Song Weiwei Wu Shuicai Wu Po-Hsiang Tsui |
| author_facet | Zhuhuang Zhou Yue Wang Shuang Song Weiwei Wu Shuicai Wu Po-Hsiang Tsui |
| author_sort | Zhuhuang Zhou |
| collection | DOAJ |
| description | In this study, a microwave-induced ablation zone (thermal lesion) monitoring method based on ultrasound echo decorrelation imaging was proposed. A total of 15 cases of ex vivo porcine liver microwave ablation (MWA) experiments were carried out. Ultrasound radiofrequency (RF) signals at different times during MWA were acquired using a commercial clinical ultrasound scanner with a 7.5-MHz linear-array transducer. Instantaneous and cumulative echo decorrelation images of two adjacent frames of RF data were calculated. Polynomial approximation images were obtained on the basis of the thresholded cumulative echo decorrelation images. Experimental results showed that the instantaneous echo decorrelation images outperformed conventional B-mode images in monitoring microwave-induced thermal lesions. Using gross pathology measurements as the reference standard, the estimation of thermal lesions using the polynomial approximation images yielded an average accuracy of 88.60%. We concluded that instantaneous ultrasound echo decorrelation imaging is capable of monitoring the change of thermal lesions during MWA, and cumulative ultrasound echo decorrelation imaging and polynomial approximation imaging are feasible for quantitatively depicting thermal lesions. |
| first_indexed | 2024-04-13T07:16:37Z |
| format | Article |
| id | doaj.art-538c07e2cb954380889279f82ac05941 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T07:16:37Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-538c07e2cb954380889279f82ac059412022-12-22T02:56:44ZengMDPI AGSensors1424-82202019-02-0119497710.3390/s19040977s19040977Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo StudyZhuhuang Zhou0Yue Wang1Shuang Song2Weiwei Wu3Shuicai Wu4Po-Hsiang Tsui5College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, ChinaCollege of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, ChinaCollege of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, ChinaCollege of Biomedical Engineering, Capital Medical University, Beijing 100054, ChinaCollege of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, ChinaDepartment of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, TaiwanIn this study, a microwave-induced ablation zone (thermal lesion) monitoring method based on ultrasound echo decorrelation imaging was proposed. A total of 15 cases of ex vivo porcine liver microwave ablation (MWA) experiments were carried out. Ultrasound radiofrequency (RF) signals at different times during MWA were acquired using a commercial clinical ultrasound scanner with a 7.5-MHz linear-array transducer. Instantaneous and cumulative echo decorrelation images of two adjacent frames of RF data were calculated. Polynomial approximation images were obtained on the basis of the thresholded cumulative echo decorrelation images. Experimental results showed that the instantaneous echo decorrelation images outperformed conventional B-mode images in monitoring microwave-induced thermal lesions. Using gross pathology measurements as the reference standard, the estimation of thermal lesions using the polynomial approximation images yielded an average accuracy of 88.60%. We concluded that instantaneous ultrasound echo decorrelation imaging is capable of monitoring the change of thermal lesions during MWA, and cumulative ultrasound echo decorrelation imaging and polynomial approximation imaging are feasible for quantitatively depicting thermal lesions.https://www.mdpi.com/1424-8220/19/4/977microwave ablationablation zoneinstantaneous echo decorrelation imagingcumulative echo decorrelation imagingthermal lesionultrasound radiofrequency signalmonitoring |
| spellingShingle | Zhuhuang Zhou Yue Wang Shuang Song Weiwei Wu Shuicai Wu Po-Hsiang Tsui Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study Sensors microwave ablation ablation zone instantaneous echo decorrelation imaging cumulative echo decorrelation imaging thermal lesion ultrasound radiofrequency signal monitoring |
| title | Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study |
| title_full | Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study |
| title_fullStr | Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study |
| title_full_unstemmed | Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study |
| title_short | Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An <i>ex</i> vivo Study |
| title_sort | monitoring microwave ablation using ultrasound echo decorrelation imaging an i ex i vivo study |
| topic | microwave ablation ablation zone instantaneous echo decorrelation imaging cumulative echo decorrelation imaging thermal lesion ultrasound radiofrequency signal monitoring |
| url | https://www.mdpi.com/1424-8220/19/4/977 |
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