BACKGROUND: Accurate needle placement is crucial for the success of percutaneous radiological needle interventions. We compared three guiding methods using an optical-based navigation system: freehand, using a stereotactic aiming device and active depth control, and using a stereotactic aiming device and passive depth control. METHODS: For each method, 25 punctures were performed on a non-rigid phantom. Five 1 mm metal screws were used as targets. Time requirements were recorded, and target positioning errors (TPE) were measured on control scans as the distance between needle tip and target. RESULTS: Time requirements were reduced using the aiming device and passive depth control. The Euclidian TPE was similar for each method (4.6 ± 1.2-4.9 ± 1.7 mm). However, the lateral component was significantly lower when an aiming device was used (2.3 ± 1.3-2.8 ± 1.6 mm with an aiming device vs 4.2 ± 2.0 mm without). DISCUSSION: Using an aiming device may increase the lateral accuracy of navigated needle insertion.
BACKGROUND: Accurate needle placement is crucial for the success of percutaneous radiological needle interventions. We compared three guiding methods using an optical-based navigation system: freehand, using a stereotactic aiming device and active depth control, and using a stereotactic aiming device and passive depth control. METHODS: For each method, 25 punctures were performed on a non-rigid phantom. Five 1 mm metal screws were used as targets. Time requirements were recorded, and target positioning errors (TPE) were measured on control scans as the distance between needle tip and target. RESULTS: Time requirements were reduced using the aiming device and passive depth control. The Euclidian TPE was similar for each method (4.6 ± 1.2-4.9 ± 1.7 mm). However, the lateral component was significantly lower when an aiming device was used (2.3 ± 1.3-2.8 ± 1.6 mm with an aiming device vs 4.2 ± 2.0 mm without). DISCUSSION: Using an aiming device may increase the lateral accuracy of navigated needle insertion.
Authors: Martin G Wagner; J Louis Hinshaw; Yinsheng Li; Timothy P Szczykutowicz; Paul Laeseke; Charles A Mistretta; Fred T Lee Journal: Radiology Date: 2019-01-15 Impact factor: 11.105
Authors: Marius Schwalbe; Axel Haine; Marc Schindewolf; Hendrik von Tengg-Kobligk; Tom Williamson; Stefan Weber; Iris Baumgartner; Torsten Fuss Journal: Int J Comput Assist Radiol Surg Date: 2016-05-27 Impact factor: 2.924
Authors: L P Beyer; L Lürken; N Verloh; M Haimerl; K Michalik; J Schaible; C Stroszczynski; P Wiggermann Journal: Int J Comput Assist Radiol Surg Date: 2018-05-04 Impact factor: 2.924
Authors: E Herrmann; D Terribilini; P Manser; M K Fix; G Toporek; D Candinas; S Weber; D M Aebersold; K Loessl Journal: Strahlenther Onkol Date: 2018-07-18 Impact factor: 3.621