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CC BY-NC-ND 4.0 · Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery 2023; 42(04): e269-e276
DOI: 10.1055/s-0042-1756209
Original Article

Intraoperative Ultrasonography in Neurosurgery: Experience of an Institution

Ultrassonografia intraoperatória em neurocirurgia: Experiência de uma instituição
Robinson Antonio Menegotto Marques 
1   Department of Neurosurgery, Cajuru University Hospital, Curitiba, PR, Brazil
,
Adriana Hernandez Marques 
2   Medical Student, School of Medicine, Federal University of Paraná (UFPR), Curitiba, Brazil
,
Amanda Hernandez Marques 
3   Medical Student, School of Medicine, Pontifical Catholic University of Paraná (PUCPR), Curitiba, Brazil
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Abstract

Objective Intraoperative ultrasound (IOUS) is an imaging method that can be used in various neurosurgical procedures. It assists in the removal of brain tumors, hematomas, in the insertion of ventricular catheters, and in spinal and peripheral nerve surgeries. The original studies using IOUS were performed with devices that produced lower-quality images, generating little interest in their use. The introduction of ultrasound devices that yielded higher-quality images associated with a relative low cost and ease of use rendered IOUS attractive. Thus, we started using it in multiple neurosurgical procedures, studying its practicality, efficacy and limitations.

Materials and methods A retrospective case study on the use of IOUS in neurosurgery from August 2014 to December 2020 at a single institution, evaluating its practicality, efficacy and limitations.

Results A total of 127 IOUS scans were performed in 112 patients aged 19 to 83 (mean: 53.8) years: 106 scans of the brain, 4 of the spinal cord, and 2 of the peripheral nerves. Brain tumors were the majority, with 86 cases (67.8%). The IOUS was unsatisfactory in 9 cases (7.1%), and there were no cases of infection related to the IOUS.

Conclusion The IOUS is a dynamic, safe, and practical exam. It can be performed in a few minutes and repeated several times during the surgical procedure. It enables surgeons to observe the pulsation of tissues and vessels, the displacement of lumps in liquid collections, and to monitor the drainage of cysts and collections, in vivid, interactive and real-time images.

Resumo

Objetivo A ultrassonografia intraoperatória (USIO) é um método de imagem que pode ser utilizado em vários procedimentos neurocirúrgicos. Auxilia na remoção de tumores cerebrais, hematomas, no implante de cateteres ventriculares, e em cirurgias espinhais e de nervos periféricos. Os estudos iniciais com a USIO eram realizados com aparelhos que disponibilizavam imagens de baixa qualidade, o que gerava pouco interesse no seu uso. Com o desenvolvimento de aparelhos de ultrassom que produziam imagens de melhor qualidade, eram de fácil manuseio e tinham relativo baixo custo, reacendeu-se o interesse na USIO. Por este motivo, iniciamos a utilização da USIO em múltiplos procedimentos neurocirúrgicos, e estudamos sua praticidade, eficácia e limitações.

Materiais e métodos Estudo retrospectivo dos casos em que a USIO foi utilizada em neurocirurgia de agosto de 2014 a dezembro de 2020 em uma só instituição, com a avaliação de sua praticidade, eficácia e limitações.

Resultados Foram realizadas 127 USIOs em 112 pacientes com idades entre 19 e 83 (média: 53,8) anos, 106 no encéfalo, 4 em medula espinhal, e 2 em nervo periférico. Os tumores cerebrais foram a maioria, com 86 casos (67,8%). A USIO foi insatisfatória em 9 casos (7,1%), e não houve casos de infecção relacionada à USIO.

Conclusões A USIO é um exame dinâmico, seguro e prático. Pode ser feito em poucos minutos e repetido várias vezes durante o procedimento cirúrgico. É possível observar a pulsação dos tecidos e vasos, o deslocamento de grumos em coleções líquidas, e acompanhar a drenagem de cistos e coleções, em imagens vivas, interativas e em tempo real.

Keywords

intraoperative ultrasound - image-guided surgery - brain tumor - intramedullary tumor - peripheral nerve tumor

Palavras-chave

ultrassom intraoperatório - cirurgia guiada por imagem - tumor cerebral - tumor intramedular - tumor de nervo periférico


Publication History

Received: 19 January 2021

Accepted: 16 June 2021

Article published online:
20 October 2023

© 2023. Sociedade Brasileira de Neurocirurgia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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