Cone-beam computed tomography-guided stereotactic liver punctures: a phantom study

Toporek, Grzegorz; Wallach, Daphné; Weber, Stefan; Bale, Reto; Widmann, Gerlig (2013). Cone-beam computed tomography-guided stereotactic liver punctures: a phantom study. Cardiovascular and interventional radiology, 36(6), pp. 1629-1637. Springer US; http://www.springer-ny.com 10.1007/s00270-013-0635-x

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PURPOSE Images from computed tomography (CT), combined with navigation systems, improve the outcomes of local thermal therapies that are dependent on accurate probe placement. Although the usage of CT is desired, its availability for time-consuming radiological interventions is limited. Alternatively, three-dimensional images from C-arm cone-beam CT (CBCT) can be used. The goal of this study was to evaluate the accuracy of navigated CBCT-guided needle punctures, controlled with CT scans. METHODS Five series of five navigated punctures were performed on a nonrigid phantom using a liver specific navigation system and CBCT volumetric dataset for planning and navigation. To mimic targets, five titanium screws were fixed to the phantom. Target positioning accuracy (TPECBCT) was computed from control CT scans and divided into lateral and longitudinal components. Additionally, CBCT-CT guidance accuracy was deducted by performing CBCT-to-CT image coregistration and measuring TPECBCT-CT from fused datasets. Image coregistration was evaluated using fiducial registration error (FRECBCT-CT) and target registration error (TRECBCT-CT). RESULTS Positioning accuracies in lateral directions pertaining to CBCT (TPECBCT = 2.1 ± 1.0 mm) were found to be better to those achieved from previous study using CT (TPECT = 2.3 ± 1.3 mm). Image coregistration error was 0.3 ± 0.1 mm, resulting in an average TRE of 2.1 ± 0.7 mm (N = 5 targets) and average Euclidean TPECBCT-CT of 3.1 ± 1.3 mm. CONCLUSIONS Stereotactic needle punctures might be planned and performed on volumetric CBCT images and controlled with multidetector CT with positioning accuracy higher or similar to those performed using CT scanners.

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:

Toporek, Grzegorz Andrzej; Wallach, Daphné Alice and Weber, Stefan

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0174-1551

Publisher:

Springer US; http://www.springer-ny.com

Language:

English

Submitter:

Kate Gerber

Date Deposited:

15 Apr 2014 11:50

Last Modified:

01 Dec 2018 02:31

Publisher DOI:

10.1007/s00270-013-0635-x

PubMed ID:

23670569

BORIS DOI:

10.7892/boris.46399

URI:

https://boris.unibe.ch/id/eprint/46399

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