{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T20:22:10Z","timestamp":1786998130986,"version":"build-2736575974"},"reference-count":26,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-017"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-012"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-004"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["World Neurosurgery"],"published-print":{"date-parts":[[2022,3]]},"DOI":"10.1016\/j.wneu.2021.12.036","type":"journal-article","created":{"date-parts":[[2021,12,23]],"date-time":"2021-12-23T11:02:08Z","timestamp":1640257328000},"page":"e221-e231","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":4,"special_numbering":"C","title":["Angulation Toward Coronal Convexity Measure and Catheter Length Indication Improves the Quality of Ventricular Catheter Placement\u2014A Smartphone-Assisted Guidance Technique"],"prefix":"10.1016","volume":"159","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4024-5665","authenticated-orcid":false,"given":"Philipp","family":"Spindler","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingo","family":"Fiss","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9277-5406","authenticated-orcid":false,"given":"Henrik","family":"Giese","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elvis","family":"Hermann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8073-1625","authenticated-orcid":false,"given":"Johannes","family":"Lemcke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin U.","family":"Schuhmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulrich-Wilhelm","family":"Thomale","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5656-2588","authenticated-orcid":false,"given":"Andreas","family":"Schaumann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.wneu.2021.12.036_bib1","doi-asserted-by":"crossref","first-page":"248","DOI":"10.1007\/s12028-008-9154-z","article-title":"Malplacement of ventricular catheters by neurosurgeons: a single institution experience","volume":"10","author":"Saladino","year":"2009","journal-title":"Neurocrit Care"},{"key":"10.1016\/j.wneu.2021.12.036_bib2","first-page":"930","article-title":"Ventricular catheter trajectories from traditional shunt approaches: a morphometric study in adults with hydrocephalus","volume":"108","author":"Lind","year":"2008","journal-title":"J\u00a0Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3171\/foc.2007.22.4.8","article-title":"Observations regarding failure of cerebrospinal fluid shunts early after implantation","volume":"22","author":"Ferguson","year":"2007","journal-title":"Neurosurg Focus"},{"key":"10.1016\/j.wneu.2021.12.036_bib4","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1007\/s12028-011-9571-2","article-title":"Strategic placement of bedside ventriculostomies using ultrasound image guidance: report of three cases","volume":"17","author":"Phillips","year":"2012","journal-title":"Neurocrit Care"},{"key":"10.1016\/j.wneu.2021.12.036_bib5","doi-asserted-by":"crossref","first-page":"65","DOI":"10.1007\/s00381-007-0410-x","article-title":"Accuracy of ultrasound-guided puncture of the ventricular system","volume":"24","author":"Strowitzki","year":"2008","journal-title":"Childs Nerv Syst"},{"issue":"suppl","key":"10.1016\/j.wneu.2021.12.036_bib6","doi-asserted-by":"crossref","first-page":"406","DOI":"10.3171\/PED-07\/11\/406","article-title":"Accurate placement of cerebrospinal fluid shunt ventricular catheters with real-time ultrasound guidance in older children without patent fontanelles: technical note","volume":"107","author":"Whitehead","year":"2007","journal-title":"J\u00a0Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib7","first-page":"66","article-title":"Comparison of the accuracy of ventricular catheter placement using freehand placement, ultrasonic guidance, and stereotactic neuronavigation","volume":"119","author":"Wilson","year":"2013","journal-title":"J\u00a0Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib8","doi-asserted-by":"crossref","first-page":"290","DOI":"10.1097\/00008506-200307000-00023","article-title":"Lack of benefit of endoscopic ventriculoperitoneal shunt insertion: a multicenter randomized trial","volume":"15","author":"Kestle","year":"2003","journal-title":"J\u00a0Neurosurg Anesthesiol"},{"key":"10.1016\/j.wneu.2021.12.036_bib9","doi-asserted-by":"crossref","first-page":"1163","DOI":"10.1007\/s00381-012-1838-1","article-title":"Selective use of intra-catheter endoscopic-assisted ventricular catheter placement: indications and outcome","volume":"28","author":"Roth","year":"2012","journal-title":"Childs Nerv Syst"},{"issue":"suppl 2","key":"10.1016\/j.wneu.2021.12.036_bib10","first-page":"243","article-title":"Ventricular catheter placement with a frameless neuronavigational system: a 1-year experience","volume":"60","author":"Azeem","year":"2007","journal-title":"Neurosurgery"},{"key":"10.1016\/j.wneu.2021.12.036_bib11","doi-asserted-by":"crossref","first-page":"327","DOI":"10.3171\/2012.7.PEDS11369","article-title":"Electromagnetic-guided neuronavigation for safe placement of intraventricular catheters in pediatric neurosurgery","volume":"10","author":"Hermann","year":"2012","journal-title":"J\u00a0Neurosurg Pediatr"},{"key":"10.1016\/j.wneu.2021.12.036_bib12","first-page":"1273","article-title":"Effect of electromagnetic-navigated shunt placement on failure rates: a prospective multicenter study","volume":"113","author":"Hayhurst","year":"2010","journal-title":"J\u00a0Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib13","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1159\/000271822","article-title":"CT-based, fiducial-free frameless stereotaxy for difficult ventriculoperitoneal shunt insertion: experience in 26 consecutive patients","volume":"88","author":"Reig","year":"2010","journal-title":"Stereotact Funct Neurosurg"},{"issue":"suppl 1","key":"10.1016\/j.wneu.2021.12.036_bib14","first-page":"131","article-title":"A\u00a0new tool for frameless stereotactic placement of ventricular catheters","volume":"67","author":"Stieglitz","year":"2010","journal-title":"Neurosurgery"},{"key":"10.1016\/j.wneu.2021.12.036_bib15","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1007\/s00381-001-0550-3","article-title":"Ventricular catheter placement in children with hydrocephalus and small ventricles: the use of a frameless neuronavigation system","volume":"18","author":"Gil","year":"2002","journal-title":"Childs Nerv Syst"},{"key":"10.1016\/j.wneu.2021.12.036_bib16","doi-asserted-by":"crossref","first-page":"777","DOI":"10.1007\/s00701-014-2026-8","article-title":"Non-assisted versus neuro-navigated and XperCT-guided external ventricular catheter placement: a comparative cadaver study","volume":"156","author":"Gautschi","year":"2014","journal-title":"Acta Neurochir (Wien)"},{"key":"10.1016\/j.wneu.2021.12.036_bib17","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1159\/000333831","article-title":"Stereotactic placement of ventricular catheters: does it affect proximal malfunction rates?","volume":"90","author":"Sampath","year":"2012","journal-title":"Stereotact Funct Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib18","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1007\/s00381-012-1943-1","article-title":"Smartphone-assisted guide for the placement of ventricular catheters","volume":"29","author":"Thomale","year":"2013","journal-title":"Childs Nerv Syst"},{"key":"10.1016\/j.wneu.2021.12.036_bib19","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1093\/neuros\/nyx420","article-title":"GAVCA study: randomized, multicenter trial to evaluate the quality of ventricular catheter placement with a mobile health assisted guidance technique","volume":"83","author":"Thomale","year":"2018","journal-title":"Clin Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib20","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1186\/1745-6215-14-428","article-title":"Guided application of ventricular catheters (GAVCA)\u2014multicentre study to compare the ventricular catheter position after use of a catheter guide versus freehand application: study protocol for a randomised trial","volume":"14","author":"Schaumann","year":"2013","journal-title":"Trials"},{"key":"10.1016\/j.wneu.2021.12.036_bib21","first-page":"88","article-title":"Accuracy of the freehand pass technique for ventriculostomy catheter placement: retrospective assessment using computed tomography scans","volume":"108","author":"Huyette","year":"2008","journal-title":"J\u00a0Neurosurg"},{"key":"10.1016\/j.wneu.2021.12.036_bib22","first-page":"31","article-title":"Risk factors for repeated cerebrospinal shunt failures in pediatric patients with hydrocephalus","volume":"92","author":"Tuli","year":"2000","journal-title":"J\u00a0Neurosurg"},{"issue":"suppl","key":"10.1016\/j.wneu.2021.12.036_bib23","first-page":"162","article-title":"Safety and accuracy of bedside external ventricular drain placement","volume":"63","author":"Kakarla","year":"2008","journal-title":"Neurosurgery"},{"key":"10.1016\/j.wneu.2021.12.036_bib24","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1016\/j.jocn.2010.06.018","article-title":"Factors affecting the accuracy of ventricular catheter placement","volume":"18","author":"Wan","year":"2011","journal-title":"J\u00a0Clin Neurosci"},{"key":"10.1016\/j.wneu.2021.12.036_bib25","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/1745-6215-15-478","article-title":"Guided (VENTRI-GUIDE) versus freehand ventriculostomy: study protocol for a randomized controlled trial","volume":"15","author":"Sarrafzadeh","year":"2014","journal-title":"Trials"},{"key":"10.1016\/j.wneu.2021.12.036_bib26","doi-asserted-by":"crossref","first-page":"1421","DOI":"10.1007\/s00701-017-3237-6","article-title":"Shunt-age related complications in adult patients with suspected shunt dysfunction: a recommended diagnostic workup","volume":"159","author":"Spirig","year":"2017","journal-title":"Acta Neurochir (Wien)"}],"container-title":["World Neurosurgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1878875021018805?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1878875021018805?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T09:09:10Z","timestamp":1761815350000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1878875021018805"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,3]]},"references-count":26,"alternative-id":["S1878875021018805"],"URL":"https:\/\/doi.org\/10.1016\/j.wneu.2021.12.036","relation":{},"ISSN":["1878-8750"],"issn-type":[{"value":"1878-8750","type":"print"}],"subject":[],"published":{"date-parts":[[2022,3]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Angulation Toward Coronal Convexity Measure and Catheter Length Indication Improves the Quality of Ventricular Catheter Placement\u2014A Smartphone-Assisted Guidance Technique","name":"articletitle","label":"Article Title"},{"value":"World Neurosurgery","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.wneu.2021.12.036","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2021 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}