Bruenn, K. and Beyer, L. and Haimerl, M. and Pregler, B. and Stroszczynski, C. and Jung, E. M. and Wiggermann, P. (2017) Comparison of computed tomography (CT) and contrast-enhanced ultrasound (CEUS) for the quantitative evaluation of an ablation defect following radiofrequency ablation of malignant liver lesions. CLINICAL HEMORHEOLOGY AND MICROCIRCULATION, 67 (3-4). pp. 445-451. ISSN 1386-0291, 1875-8622
Full text not available from this repository. (Request a copy)Abstract
OBJECTIVE: To compare contrast-enhanced computed tomography (CT) and contrast-enhanced ultrasound (CEUS) for the quantitative evaluation of an ablation defect following radiofrequency ablation of malignant liver lesions in a prospective study. MATERIALS AND METHODS: 22 radiofrequency ablations of malignant liver tumors were performed. The ablation defects were then measured and evaluated by two independent examiners via contrast-enhanced computed tomography (CT) and contrast-enhanced ultrasound (CEUS) using a 1-5MHz multifrequency convex ultrasound transducer (LOGIQ E9, GE) with respect to the short-axis diameter, the long-axis diameter, and the area. RESULTS: Quantitative evaluation of ablation defects is possible with both contrast-enhanced CT and CEUS. The average long-axis diameter was 47.1mm (+/- 11.08; +/- 23,5%) on CEUS and 56.48mm (+/- 14.14; +/- 25,0%) on CT; the short-axis diameterwas 39.72mm(+/- 11.14; +/- 28,05%) on CEUS and 40.27mm(+/- 10.50; +/- 26,07%) on CT; the areawas 1439.82 mm(2) (+/- 678.57; +/- 47,13%) on CEUS and 2392.68 mm(2) (1147.67; +/- 48,0%) on CT. On average, ablation defects are assessed to be larger on CT than on CEUS. A significant correlation between the modalities could not be achieved for all measurement axes. CONCLUSION: CEUS can be used for the postinterventional detection and evaluation of ablation defects. However, these are always assessed to be larger on contrast-enhanced CT than CEUS.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HEPATOCELLULAR-CARCINOMA; MICROWAVE ABLATION; THERMAL ABLATION; PORCINE MODEL; METASTASES; DIAGNOSIS; SONOGRAPHY; CANCER; PROBES; TUMORS; CEUS; CT; ablation; RFA; HCC |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:01 |
| Last Modified: | 26 Apr 2019 12:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/604 |
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