Evaluation of the Access Cube Patient-Mounted Navigation System for CT-Guided Percutaneous Needle Placement-A Phantom Study

Lorenz Krammer; Rafael Hostettler; Stephan Wetzel

doi:10.1016/j.jvir.2023.06.036

Evaluation of the Access Cube Patient-Mounted Navigation System for CT-Guided Percutaneous Needle Placement-A Phantom Study

J Vasc Interv Radiol. 2023 Oct;34(10):1809-1814. doi: 10.1016/j.jvir.2023.06.036. Epub 2023 Jul 3.

Authors

Lorenz Krammer¹, Rafael Hostettler², Stephan Wetzel³

Affiliations

¹ University of Basel, Basel, Switzerland. Electronic address: lorenz@krammer.ch.
² Robotics and Embedded Systems, Technical University Munich, Munich, Germany.
³ Medical Templates AG, Egg, Switzerland; Department of Neuroradiology, Hirslanden Clinic Zurich, Zurich, Switzerland.

PMID: 37406773
DOI: 10.1016/j.jvir.2023.06.036

Abstract

Free-hand computed tomography (CT)-guided interventions are common in interventional radiology. Their accuracy and technical success are highly dependent on the skill and experience of the performing interventionalist. This study evaluates a new, patient-mounted navigation device, which aims to facilitate percutaneous interventions-the Access Cube (AC). Sixty punctures were performed on 2 phantoms (rigid vs nonrigid) comparing the Free-Hand Method (FHM) to the AC on measures of accuracy, time, and the need for intraprocedural scans. Using the AC, punctures were significantly more accurate (3.8 mm ± 1.3 mm vs FHM 6.7 mm ± 4.5 mm, P = .004), significantly faster (263.1 s ± 84.4 s vs FHM 411.2 s ± 141.0 s, P < .001) and needed significantly fewer intraprocedural scans (1.4 ± 0.6 vs FHM 2.8 ± 0.4, P < .001). The AC may enable interventionalists to perform faster and more accurate punctures in a clinical setting.