| Targeting accuracy of CT-guided stereotaxy for radiofrequency ablation of liver tumours. | |
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MedLine Citation:
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PMID: 21469968 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract The targeting accuracy during CT-guided stereotactic radiofrequency ablation (SRFA) of liver tumours was evaluated in a clinical study. Patients under general anaesthesia were immobilized using a vacuum cushion and respiratory motion control was based on temporary disconnections of the endotracheal tube. An optical-based navigation system was used for 3D trajectory planning and needle placement via a stereotactic aiming device. A control CT with the needles in place was fused with the planning CT for accuracy evaluation. Sub-analysis was performed for "location" (liver segments II - VIII), "approach" (intercostal or transabdominal), "properties" (clear parenchymal, subcapsular, subphrenic, fat, and subphrenic plus fat), and "path length". In 20 patients with 35 liver lesions, a total of 145 needles were placed with mean (±SD) lateral errors of 3.6 ± 2.5 mm at the needle tip, angular errors of 1.3° ± 1.2°, and longitudinal errors at the needle tip of -7.4 ± 6.2 mm. No puncture-related complications were noted. No significant differences of angular errors between segments, approach and properties were recorded. Long paths correlated with smaller angular errors. CT-guided stereotaxy can be considered safe and provided precise multiple needle placement for SRFA of liver lesions at arbitrary trajectories in various segments and locations. |
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Authors:
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Gerlig Widmann; Peter Schullian; Marion Haidu; Martin Fasser; Reto Bale |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-6 |
Journal Detail:
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Title: Minimally invasive therapy & allied technologies : MITAT : official journal of the Society for Minimally Invasive Therapy Volume: - ISSN: 1365-2931 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9612996 Medline TA: Minim Invasive Ther Allied Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Microinvasive Therapy, Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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