Widmann, Gerlig; Wallach, Daphné; Toporek, Grzegorz; Schullian, Peter; Weber, Stefan; Bale, Reto (2013). Angiographic C-arm CT- versus MDCT-guided stereotactic punctures of liver lesions: nonrigid phantom study. American Journal of Roentgenology, 201(5), pp. 1136-1140. American Roentgen Ray Society 10.2214/AJR.12.10405
Full text not available from this repository. (Request a copy)OBJECTIVE
Angiographic C-arm CT may allow performing percutaneous stereotactic tumor ablations in the interventional radiology suite. Our purpose was to evaluate the accuracy of using C-arm CT for single and multimodality image fusions and to compare the targeting accuracy of liver lesions with the reference standard of MDCT.
MATERIALS AND METHODS
C-arm CT and MDCT scans were obtained of a nonrigid rapid prototyping liver phantom containing five 1-mm targets that were placed under skin-simulating deformable plastic foam. Target registration errors of image fusion were evaluated for single-modality and multimodality image fusions. A navigation system and stereotactic aiming device were used to evaluate target positioning errors on postinterventional scans with the needles in place fused with the C-arm CT or MDCT planning images.
RESULTS
Target registration error of the image fusion showed no significant difference (p > 0.05) between both modalities. In five series with a total of 25 punctures for each modality, the lateral target positioning error (i.e., the lateral distance between the needle tip and the planned trajectory) was similar for C-arm CT (mean [± SD], 1.6 ± 0.6 mm) and MDCT (1.82 ± .97 mm) (p = 0.33).
CONCLUSION
In a nonrigid liver phantom, angiographic C-arm CT may provide similar image fusion accuracy for comparison of intra- and postprocedure control images with the planning images and enables stereotactic targeting accuracy similar to that of MDCT.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy |
UniBE Contributor: |
Wallach, Daphné Alice, Toporek, Grzegorz Andrzej, Weber, Stefan (B) |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1546-3141 |
Publisher: |
American Roentgen Ray Society |
Language: |
English |
Submitter: |
Kate Gerber |
Date Deposited: |
15 Apr 2014 11:53 |
Last Modified: |
29 Mar 2023 23:33 |
Publisher DOI: |
10.2214/AJR.12.10405 |
PubMed ID: |
24147488 |
Uncontrolled Keywords: |
ablation, accuracy, C-arm CT, image fusion, stereotaxy |
URI: |
https://boris.unibe.ch/id/eprint/46401 |
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