Print Email Facebook Twitter Needle placement errors: do we need steerable needles in interventional radiology? Title Needle placement errors: do we need steerable needles in interventional radiology? Author de Jong, T.L. (TU Delft Medical Instruments & Bio-Inspired Technology) van de Berg, N.J. (TU Delft Medical Instruments & Bio-Inspired Technology) Tas, L. (TU Delft Medical Instruments & Bio-Inspired Technology) Moelker, Adriaan (Erasmus MC) Dankelman, J. (TU Delft Medical Instruments & Bio-Inspired Technology) van den Dobbelsteen, J.J. (TU Delft Medical Instruments & Bio-Inspired Technology) Date 2018 Abstract Purpose: Accurate and precise needle placement is of utmost importance in interventional radiology. However, targeting can be challenging due to, eg, tissue motion and deformation. Steerable needles are a possible solution to overcome these challenges. The present work studied the clinical need for steerable needles. We aimed to answer three subquestions: 1) What are the current challenges in needle placement? 2) What are allowable needle placement errors? and 3) Do current needles need improvement and would steerable needles add clinical value?Methods: A questionnaire was administered at the Annual Meeting of Cardiovascular and Interventional Radiology Society of Europe in 2016. In total, 153 respondents volunteered to fill out the survey, among them 125 (interventional) radiologists with experience in needle placement.Results: 1) Current challenges in needle placement include patient-specific and technical factors. Movement of the target due to breathing makes it most difficult to place a needle (90%). 2) The mean maximal allowable needle placement error in targeted lesions is 2.7 mm. A majority of the respondents (85%) encounter unwanted needle bending upon insertion. The mean maximal encountered unwanted needle bending is 5.3 mm. 3) Needles in interventional radiology need improvement, eg, improved needle visibility and manipulability, according to 95% of the respondents. Added value for steerable needles in current interventions is seen by 93% of the respondents.Conclusion: Steerable needles have the potential to add clinical value to radiologic interventions. The current data can be used as input for defining clinical design requirements for technical tools, such as steerable needles and navigation models, with the aim to improve needle placement in interventional radiology. Subject clinical useinterventional radiologyneedle bendingneedle deflectionneedle placement errorquestionnairesteerable needle To reference this document use: http://resolver.tudelft.nl/uuid:18842c70-5946-4fc9-9322-198d890b8ca4 DOI https://doi.org/10.2147/MDER.S160444 ISSN 1179-1470 Source Medical Devices: Evidence and Research, 11, 259-265 Part of collection Institutional Repository Document type journal article Rights © 2018 T.L. de Jong, N.J. van de Berg, L. Tas, Adriaan Moelker, J. Dankelman, J.J. van den Dobbelsteen Files PDF mder_160444_needle_placem ... 080218.pdf 1.7 MB Close viewer /islandora/object/uuid:18842c70-5946-4fc9-9322-198d890b8ca4/datastream/OBJ/view