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Introducción: El manejo de los gliomas cerebrales durante las últimas cuatro décadas ha sufrido cambios relevantes en su estudio y tratamiento. Dentro de estos cambios se encuentra el desarrollo de técnicas imagenológicas, neurofisiológicas e histopatológicas. El presente trabajo intenta estimar el impacto que la utilización de dichas tecnologías ha tenido sobre el pronóstico de los pacientes. Material y método: Revisión exhaustiva de la literatura en medios digitales e impresos abarcando mayormente publicaciones y comunicaciones desde la década de 1980 hasta el presente. Se expone 1 caso sometido recientemente a cirugía por los autores en el que se utilizaron varias de estas herramientas, presentando el análisis que se llevó a cabo en la planificación quirúrgica. Resultados: La literatura muestra mejorías consistentes pero discretas en el pronóstico asociado al uso de tecnologías complementarias intraoperatorias en gliomas cerebrales, relacionadas a la ayuda que prestarían en la extensión de la resección tumoral y en la preservación funcional. Conclusiones: La utilización intensiva de las tecnologías complementarias descritas parece recomendable si la planificación quirúrgica anticipa beneficios fundados en cuanto a morbi-mortalidad para un paciente en particular. Se debe ser cauto en anticipar y generalizar el impacto pronóstico global que puedan tener, beneficio que es consistente en la literatura pero que en estos momentos parece modesto en términos generales en especial para gliomas de alto grado.
Introduction: The management of cerebral gliomas during the last four decades has undergone relevant changes in terms of its study and treatment. Among these changes is the development of imaging, neurophysiological and histopathological techniques. The present study attempts to estimate the impact that the use of these technologies has had on the prognosis of patients. Material and Method: Comprehensive review of the literature in digital and print media covering mostly publications and communications from the 1980s to the present. 1 case recently submitted to surgery by the authors in which several of these tools were used is exposed, presenting the analysis that was carried out in the surgical planning. Results: The literature shows consistent but discrete improvements in the prognosis associated with the use of intraoperative complementary technologies in cerebral gliomas, related to the help they would provide in the extension of tumor resection and functional preservation. Conclusions: The intensive use of the complementary technologies described seems advisable if surgical planning anticipates well-founded benefits in terms of morbidity and mortality for a particular patient. Caution should be exercised in anticipating and generalizing the global prognostic impact they may have, a benefit that is consistent in the literature but currently seems modest in general terms especially for high grade gliomas.
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Objective:To compare the therapeutic results between axis pedicle screwing assisted by intraoperative 3-D navigation and freehand axis pedicle screwing in the treatment of Hangman fracture.Methods:A retrospective analysis was performed of the 64 patients with Hangman fracture who had received posterior axis pedicle screwing at Department of Spinal Surgery, The Sixth Hospital of Ningbo from May 2014 to December 2019. According to the placement methods of axis pedicle screws, they were divided into a navigation group ( n=34, subjected to axis pedicle screwing assisted by intraoperative 3-D navigation) and a freehand group ( n=30, subjected to freehand axis pedicle screwing). Pedicle screw placement time, operation time, intraoperative bleeding, fluoroscopy time, hospital stay, total hospitalization cost and complications were recorded and compared between the 2 groups. The accuracy of axis pedicle screw placement was evaluated according to the postoperative cervical CT and screw grading criteria proposed by Park et al. At admission, 3 months postoperation, and the last follow-up, neurological function of the patients was evaluated by modified Japanese Orthopedic Association (mJOA) score, neck pain was evaluated by visual analogue scale (VAS), and C2/3 vertebral body angulation and C2 forward displacement were measured. The clinical efficacy was evaluated by Moon grading at the last follow-up. Results:The navigation group and the freehand group were comparable due to insignificant differences between them in the preoperative general data ( P>0.05). The accuracy of screw placement in the navigation group (98.2%, 54/55) was significantly higher than that in the freehand group (85.2%, 46/54) ( P<0.05). The screw placement time, operation time, fluoroscopy time and total hospitalization cost in the navigation group were significantly more than those in the freehand group ( P<0.05). Vertebral artery injury occurred in 3 cases in the freehand group. Screw loosening, screw breakage or rod breakage occurred in none of the patients after operation. There was no significant difference between the 2 groups in the intraoperative bleeding, hospital stay or follow-up time ( P>0.05). In both groups, the VAS score, mJOA score, C2/3 vertebral body angulation and C2 forward displacement were significantly improved at 3 months postoperation and the last follow-up compared with those at admission ( P<0.05), but there was no significant difference between the 2 groups in the contemporary comparisons ( P>0.05). At the last follow-up, Moon grading in the navigation group was significantly better than that in the freehand group ( P<0.05). Conclusion:In the treatment of Hangman fracture, compared with freehand screw placement, axis pedicle screwing assisted by intraoperative 3-D navigation can improve accuracy and safety of screw placement and reduce postoperative complications, leading to better clinical efficacy.
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El abordaje interhemisférico contralateral es una variante del abordaje interhemisférico transcalloso que permite optimizar el acceso a lesiones ubicadas en los ventrículos laterales o en sus paredes. La planificación del ángulo de entrada mediante neuronavegador nos permitió el manejo de un Cavernoma ubicado sobre el núcleo caudado e inmediato a la cápsula interna sin realizar callosotomía convencional ni comprometer las estructuras sensibles adyacentes.
Contralateral interhemispheric approach is a variant of the well-know interhemispheric transcallosal approach that allows to optimize the lateral wall ventricle lesions management. Neuronavigation planning allowed us to deal with a caudate nucleus cavernoma contiguous to internal capsule without conventional callosotomy and additional damage neither.
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Cerebrum , Cerebral Ventricles , Internal Capsule , NeuronavigationABSTRACT
Objective:To explore the clinical efficiency evaluation and prognostic factors of aspiration guided by neuronavigation in the treatment of pediatric brain abscess (PBA).Methods:A total of 47 patients with PBA were treated with aspiration guided by neuronavigation between January 2013 and January 2019 at the First Affiliated Hospital of Zhengzhou University.All clinical data were retrospectively analyzed.According to Glasgow Outcome Scale on discharge, all children were divided into 2 groups, namely good prognosis group and poor prognosis group.Prognostic factors were analyzed by using univariate analysis and binary Logistic regression multivariate analysis. Results:Among the 47 children, 38 children (80.9%) were assigned to the good prognosis group, and 9 children (19.1%) were assigned to the poor prognosis group.Univariate analysis proved that abscess volume>4 cm( χ2=5.650, P=0.017), multiple or multilocular abscess ( χ2=3.258, P=0.027), and abscess located in functional areas ( χ2=6.187, P=0.013) were correlated with poor prognosis.Multivariate analysis revealed that abscess volume>4 cm( OR=5.913, 95% CI: 2.241-25.917, P=0.023) and abscess located in functional areas ( OR=10.519, 95% CI: 3.918-62.513, P<0.001) were independent risk factors for poor prognosis. Conclusion:The treatment of PBA with aspiration guided by neuronavigation is safe, effective and minimal invasive, and the clinical efficiency is satisfactory.Abscess volume>4 cm and abscess located in deepbrain/functional areas are independent risk factors for poor prognosis.
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@#Introduction: Posterior percutaneous instrumentation may represent a challenge when multiple levels need to be instrumentated, especially when including the upper thoracic spine. The aim of the present study was to evaluate the technical feasibility and the long-term outcome of such long constructs in different surgical conditions. Materials and Methods: This investigation was a retrospective cohort study which included patients who underwent thoraco-lumbar percutaneous fixations. We collected clinical, surgical and radiological data, with a minimum follow-up of 24 months. Health-related quality-oflife, residual pain, instrumentation placement, and complications were studied. Results: A total of 18 procedures were enrolled, in which 182 screws were implanted, (170 positioned in thoracic and 12 in lumbar pedicles, respectively). No surgical complications or hardware failure occurred in our series, 6 out of 182 (3,2%) screws had a partial pedicle breach, without neurological impairment or need for surgical revision. Conclusion: According to our results, a fully posterior percutaneous approach for long thoraco-lumbar spine instrumentation can be considered safe and reproducible, although an adequate training is strictly required.
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PURPOSE: The purpose of this study was to evaluate the relative utility and benefits of free-hand 2-dimensional intraoperative ultrasound (FUS) and navigated 3-dimensional intraoperative ultrasound (NUS) as ultrasound-guided biopsy (USGB) techniques for supratentorial lesions. METHODS: All patients who underwent USGB for suspected supratentorial tumours from January 2008 to December 2017 were retrospectively analyzed. The charts and electronic medical records of these patients were studied. Demographic, surgical, and pathological variables were collected and analyzed. The study group consisted of patients who underwent either FUS or NUS for biopsy. RESULTS: A total of 125 patients (112 adults and 13 children) underwent USGB during the study period (89 FUS and 36 NUS). NUS was used more often for deep-seated lesions (58% vs. 18% for FUS, P<0.001). The mean operating time for NUS was longer than for FUS (156 minutes vs. 124 minutes, P=0.001). Representative yield was found in 97.7% of biopsies using FUS and in 100% of biopsies using NUS (diagnostic yield, 93.6% and 91.3%, respectively). The majority of lesions (89%) were high-grade gliomas or lymphomas. Postoperative complications were more common in the NUS group (8.3% vs. 1.2%), but were related to the tumour location (deep). CONCLUSION: Despite the longer operating time and higher rate of postoperative complications, NUS has the benefit of being suitable for biopsies of deep-seated supratentorial lesions, while FUS remains valuable for superficial lesions.
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Adult , Humans , Biopsy , Electronic Health Records , Glioma , Lymphoma , Neuronavigation , Postoperative Complications , Retrospective Studies , UltrasonographyABSTRACT
Objective@#To investigate the value of neuronavigation system in the keyhole microsurgical operation for distal intracranial artery aneurysms(DIAA).@*Methods@#The clinical data of 16 cases with DIAA who were treated by via keyhole approaches, from January, 2013 to December, 2018, were analyzed retrospectively. Ten aneurysms located in anterior cerebral artery(ACA), 3 in posterior inferior cerebellum artery(PICA) and 3 in perforator artery(PA). The optimal skin incision and craniotomy were designed with assistence of neuronavigation system preoperatively, and lesions were located precisely under the guidance of neuronavigation system during microsurgery before clipping or resection. Angiography was performed before discharge, and clinic followed-up was conducted monthly till 6 months after surgery.@*Results@#The systematic error of neuronavigation system ranged from 0.5 mm to 1.0 mm, with an average of 0.6 mm. All 16 aneurysms were explored and managed successfully with the guidance of neuronavigation system without aneurysm premature rupture nor neuronavigation-related complications. Absolute occlusion of all aneurysms was documented angiographically after surgery. Of all cases, 2 experienced shunt procedure due to delayed hydrocephalus. During 6 months follow-up period, all 16 cases recovered well.@*Conclusion@#Neuronavigation system can precisely locate the deep-seated DIAA, contribute to the preoperative planning of microsurgery via keyhole approaches and avoid evitable injury during excessive manipulation. The noninvasive, rapid and contrast-enhanced CT images of head was an ideal data source for the neuronavigation system.
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Objective To investigate the value of neuronavigation system in the keyhole microsurgical opera鄄tion for distal intracranial artery aneurysms (DIAA). Methods The clinical data of 16 cases with DIAA who were treated by via keyhole approaches, from January, 2013 to December, 2018, were analyzed retrospectively. Ten a鄄neurysms located in anterior cerebral artery(ACA), 3 in posterior inferior cerebellum artery(PICA) and 3 in perforator artery (PA).The optimal skin incision and craniotomy were designed with assistence of neuronavigation system preop鄄eratively, and lesions were located precisely under the guidance of neuronavigation system during microsurgery before clipping or resection. Angiography was performed before discharge, and clinic followed-up was conducted monthly till 6 months after surgery. Results The systematic error of neuronavigation system ranged from 0.5 mm to 1.0 mm, with an average of 0.6 mm.All 16 aneurysms were explored and managed successfully with the guidance of neuronav鄄igation system without aneurysm premature rupture nor neuronavigation-related complications. Absolute occlusion of all aneurysms was documented angiographically after surgery. Of all cases, 2 experienced shunt procedure due to de鄄layed hydrocephalus.During 6 months follow-up period, all 16 cases recovered well. Conclusion Neuronavigation system can precisely locate the deep-seated DIAA, contribute to the preoperative planning of microsurgery via key鄄hole approaches and avoid evitable injury during excessive manipulation. The noninvasive, rapid and contrast-en鄄hanced CT images of head was an ideal data source for the neuronavigation system.
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Objective: To explore the application value of intraoperative ultrasound (IOUS) combined with neuronavigation in the microsurgery of low-grade glioma (LGG). Methods Totally 34 patients with LGG underwent microsurgery assisted by IOUS combined with neuronavigation. The degree of tumor resection was evaluated by MRI within 72 hours after operation. Occurrence of IOUS related adverse events such as brain contusion, cerebral hemorrhage and complications such as intracranial infection and cerebral hematoma were observed. Results: The detection rate of tumors by IOUS combined with neuronavigation was 100% (34/34) and accuracy rate of localization was 100% (34/34) in the 34 LGG patients. MRI within 72 hours after operation showed total resection in 27 cases (27/34, 79.41%), subtotal resection in 3 cases (3/34, 8.82%), and partial resection in 4 cases (4/34, 11.76%). Intracranial infection occurred in 2 cases which were improved after anti-infection treatment, but no IOUS scan related adverse events occurred. Conclusion: IOUS combined with neuronavigation can accurately locate LGG and achieve maximum extent safely resection of tumors.
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Objective To investigate the advantage of neuronavigation assisted microsurgical resection of gliomas in eloquent areas of brain. Methods The clinical data of 99 patients with gliomas in eloquent areas of brain and underwent microsurgery in the First Affiliated Hospital of Sun Yat-sen University from January 2012 to December 2017 were analyzed retrospectively. All patients were divided into two groups: neuronavigator-guided microsurgery group (neuronavigation group,46 cases) and non-neuronavigator-guided microsurgery group (non-neuronavigation group,53 cases). The neuronavigation group received neuronavigation assisted microsurgery, while the non-neuronavigation group received general microsurgery. MRI examination, Karnofsky performance scale (KPS) score and symptomatic improvement rate were used to analyze the extent of resection and postoperative function. Results The total resection rate of neuronavigation group was 91.3% (42/46). Comparing with 73.6% (39/53) total resection rate in non-neuronavigation group,the difference of total resection rate was statistically significant (Z=-2.343,P＜0.05). The postoperative symptoms improved both in neuronavigation group and non-neuronavigation group,and the KPS score at discharge were higher than that before operation (P＜0.05). No aggravation of symptoms and signs or new complications occurred in all patients except one case of postoperative muscle strength decline in non-neuronavigation group after the surgery. According to tumor size,the total resection rate of neuronavigation group and non-neuronavigation group among patients whose maximum size of tumor≥3cm were 89.5%(34/38) and 72.5%(37/51) respectively. The difference of total resection rate was statistically significant between these two groups (Z=-2.040,P＜0.05). Conclusion Neuronavigation assisted microsurgical resection of gliomas in brain eloquent areas can improve the rate of total resection and postoperative quality of life without increase in postoperative complications.
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Objective To improve the system of specialized training by exploring the role of multimodal navigation in the teaching of neurosurgery.Methods The questionnaire was conducted by the experts to obtain the detailed information of 20 residents.They were randomly divided into two groups:the traditional teaching group (n=10) and the multimodal navigation group (n=10).The details were evaluated from the reaction layer,the learning layer,the behavior layer and the result layer by the Kirkpatriek's model.The data were analyzed by SPSS 17.0.The quantitative data were described by mean ± standard deviation and the qualitative data was described by rate or percentage.Two independent-samples t test was used to compare the results of two groups.Results The results of the reaction layer showed that the scores of the multimodal navigation group were significantly higher than those of the traditional teaching group,which were statistically significant (P＜0.05) in the training content,training methods,training facilities and experience after training.The learning results showed that the multimodal navigation group had higher scores in the theoretical examinations,surgical skills and overall scores (P＜0.05).The behavioral results showed that the clinical ability of the multimodal navigation group was more prominent (P＜0.05).The result layer showed that under the guidance of professors,the percentage of residents who can complete the whole surgical operation is higher in multimodal navigation group (50％ vs.20％).Conclusion The application of multimodal navigation technology has a positive effect on the teaching of neurosurgery and specialized training of residents.
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ABSTRACT Objectives: To compare the accuracy of insertion of pedicle screws into the thoracic spine using fluoroscopic guidance or computer-assisted navigation techniques. Methods: Eight cadaveric thoracic spines were divided into two groups: the fluoroscopy group, in which pedicle screws were inserted with the guidance of a C-arm device, and the navigation group, in which insertion of the screws was monitored using computer-assisted navigation equipment. All procedures were performed by the same spinal surgeon. The rate of pedicle breach was compared between the two groups. Results: There was one intra-canal perforation in each group. Both perforations were medial in direction, and the breaches were 2 to 4 mm deep. There were no statistically significant differences in breach rate between the two groups. Conclusions: The accuracy of insertion of pedicle screws in the thoracic spine using computer-assisted navigation is equivalent to that achieved using fluoroscopic guidance. Computer-assisted navigation improves the safety of the surgical team during the procedure due to the absence of exposure to radiation. Therefore, there is a need for future randomized controlled trials to be conducted in the clinical setting to evaluate other outcomes, including duration of surgery and blood loss during the procedure. Level of evidence IV.
RESUMO Objetivos: Comparar a acurácia da inserção de parafusos pediculares na coluna torácica, utilizando fluoroscopia ou técnicas de navegação assistidas por computador. Métodos: Estudo experimental com cadáveres. Oito colunas torácicas proveniente de cadáveres foram divididas em dois grupos: no grupo Fluoroscopia os parafusos pediculares foram inseridos com orientação de um aparelho tipo C-arm, e no grupo Navegação o monitoramento foi feito com um equipamento de assistência por computador. Todos os procedimentos foram feitos pelo mesmo cirurgião de coluna. A taxa de violação do canal foi comparada entre os grupos. Resultados: Houve uma perfuração de canal em cada grupo, ambas mediais, com 2-4 mm de profundidade. Não houve diferenças significativas entre os dois grupos em termos de taxa de perfuração do canal. Conclusão: A acurácia na inserção de parafusos pediculares na coluna torácica é igual comparando-se a navegação assistida por computador e o método de monitoramento por fluoroscopia. Como a segurança do procedimento para a equipe cirúrgica é maior com o método da navegação, devido à ausência de exposição à radiação, há necessidade de se realizarem estudos clínicos controlados no ambiente clínico, que avaliem outros desfechos, como o tempo de cirurgia e de sangramento. Nível de evidência IV.
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RESUMEN Introducción: La epilepsia es una de las patologías neurológicas crónicas más frecuentes, con una incidencia de 50/100.000/año y una prevalencia entre 0,5 y 2% a nivel mundial. Un tercio de estos pacientes son resistentes al tratamiento con fármacos antiepilépticos, lo que se conoce como epilepsia refractaria. La mayoría de estos pacientes sufren de epilepsias focales secundarias a lesiones epileptogénicas evidenciadas cada vez más frecuentemente en correlación directa con las nuevas técnicas de neuroimagen cerebral. La cirugía de la epilepsia es el único tratamiento que podría curar la epilepsia de los pacientes con epilepsia refractaria. El objetivo de la cirugía de la epilepsia es remover la zona epileptogénica con preservación de las áreas elocuentes, y aquí la experiencia quirúrgica y la tecnología de neuroimagen juegan un papel capital. Objetivos: Demostrar la utilidad de la neuronavegación en la planificación prequirúrgica y en la cirugía de la epilepsia refractaria. Método: Estudio descriptivo transversal y analítico, en base a 47 cirugías realizadas (12 resectivas, 32 paliativas y 3 diagnósticas) en pacientes con epilepsia refractaria y edad media de 9,93 años (SD 4,1). En 27 pacientes (57.44%) se utilizó el neuronavegador. En el grupo de pacientes operados con neuronavegación disminuyó el tiempo quirúrgico en 47.17 minutos (p = 0,022), la cantidad de hemorragia en 111.41 mililitros (p = 0,011) y los días de hospitalización en 6.68 días (p = 0,005), en comparación con el grupo intervenido sin neuronavegación. Las complicaciones en el grupo con neuronavegación fueron del 29,63% en comparación con 65% en el grupo intervenido sin neuronavegación (p = 0,034). Conclusiones: En nuestra serie, el uso del neuronavegador en la planificación y desarrollo de la cirugía tuvo un impacto significativo al reducir la cantidad de hemorragia perdida, el tiempo quirúrgico, los días de hospitalización, y las complicaciones postquirúrgicas.
Abstract Introduction: Epilepsy is one of the more frequent neurologic disorders, with an incidence of 50/100,000/year and prevalence between 0.5 and 2% worldwide. A third of these patients suffer focal epilepsy due to epileptogenic lesions evident by Neuroimaging new techniques. Epilepsy surgery is the only treatment that can cure refractory epilepsy. Its goal is to remove the epileptogenic lesion with preservation of eloquent areas, and in this case both surgical experience and neuroimaging technology play a pivotal role. Objective: To demonstrate utility of neuronavigation in presurgical planning and surgery of refractory epilepsy. Method: Descriptive, cross sectional and analytic study of 47 performed surgeries (12 resective, 12 palliative and 3 diagnostic) in patients with refractory epilepsy with an average age of 9.93 years (SD 4.1). In 27 patients (57.44%) neuronavigation was used. In patients operated with assistance of neuronavigation, surgical time diminished in 47.17 minutes (p=0.022), hemorrhage in 111.41 ml (p=0.011) and days of hospitalization in 6.68 days (p=0.005) comparing with group without neuronavigation. Complications in the group with neuronavigation were 29.63% compared with 65% in the group without it. (P=0,034). Conclusions: In this study, using neuronavigation in planning and performing surgery in reducing the amount of blood loss, surgical time, days of hospitalization and post surgical complications.
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BACKGROUND: Recently, modern technology such as diffusion tensor imaging (DTI), neuro-navigation and intraoperative neurophysiological monitoring (IOM) have been actively adopted for the treatment of thalamic tumors. We evaluated surgical outcomes and efficacy of the aforementioned technologies for the treatment of pediatric thalamic tumors. METHODS: We retrospectively reviewed clinical data from 37 children with thalamic tumors between 2004 and 2017. There were 44 operations (27 tumor resections, 17 biopsies). DTI was employed in 17 cases, neuro-navigation in 23 cases and IOM in 14 cases. All diagnoses were revised according to the 2016 World Health Organization Classification of Tumors of the Central Nervous System. Progression-free survival (PFS) and overall survival (OS) rates were calculated, and relevant prognostic factors were analyzed. The median follow-up duration was 19 months. RESULTS: Fifteen cases were gross total resections (GTR), 6 subtotal resections (STR), and 6 partial resections (PR). Neurological status did not worsen after 22 tumor resections. There were statistically significant differences in terms of the extent of resection between the groups with DTI, neuro-navigation and IOM (n=12, GTR or STR=12) and the group without at least one of the three techniques (n=15, GTR or STR=9, p=0.020). The mean PFS was 87.2±38.0 months, and the mean OS 90.7±36.1 months. The 5-year PFS was 37%, and the 5-year OS 47%. The histological grade (p≤0.001) and adjuvant therapy (done vs. not done, p=0.016) were significantly related to longer PFS. The histological grade (p=0.002) and the extent of removal (GTR/STR vs. PR/biopsy, p=0.047) were significantly related to longer OS. CONCLUSION: Maximal surgical resection was achieved with acceptable morbidity in children with thalamic tumors by employing DTI, neuro-navigation and IOM. Maximal tumor resection was a relevant clinical factor affecting OS; therefore, it should be considered the initial therapeutic option for pediatric thalamic tumors.
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Child , Humans , Central Nervous System , Classification , Diagnosis , Diffusion Tensor Imaging , Diffusion , Disease-Free Survival , Follow-Up Studies , Intraoperative Neurophysiological Monitoring , Neuronavigation , Retrospective Studies , Thalamic Diseases , Treatment Outcome , World Health OrganizationABSTRACT
Objective:To evaluate the value of intraoperative magnetic resonance imaging (iMRI) combined with neuronavigation for the resection of insular gliomas.Methods:From August 2014 to October 2017 in the First Hospital Affiliated to Sun Yat-sen University,clinical data of 41 patients with insular glioma,who underwent the surgery assisted with 3.0T iMRI and neuronavigation,were analyzed retrospectively,and the resection extent,complications and prognosis were evaluated.Results:Subtotal tumor resection was achieved in 21 patients and partial resection was done in 20 after iMRI scanning.After further resection,total tumor resection was achieved in 16 patients,subtotal resection in 18 and partial resection in 7.There was a statistical significant difference in tumor resection between pre-iMRI and post-iMRI according to the Fisher test (P＜0.05).In the follow-up from 3 months to 3 years,the symptoms of the 41 patients had improved.Conclusion:iMRI corrected the shift of brain.Neuronavigation can accurately and timely assess the degree of resecting tumor.The combination of neuronavigation with surgery can maximally and safely resect insular glioma.
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Objective@#To investigate the clinical value of multimodal navigation-based virtual reality (MNVR) in the needle biopsy of intracranial eloquent lesions.@*Methods@#From January 2016 to January 2017, 20 patients with intracranial deep-seated lesions involving eloquent brain areas underwent MNVR-aided needle biopsy at Department of Neurosurgery, People′s Liberation Army General Hospital. Preoperatively, MNVR was used to propose and revise the biopsy planning. Intraoperatively, navigation helped trajectory avoid the eloquent structures. Intraoperative MRI (iMRI) was performed to prove the biopsy accuracy and detect the intraoperative complications. Perioperative neurological status, iMRI findings, intraoprative complications, surgical outcome and pathological diagnosis were recorded. Wilcoxon rank-sum test was conducted to compare the preoperative and postoperative neurological scores.@*Results@#MNVR helped revised 45%(9/20) initial biopsy trajectories, which would probably injury the nearby eloquent structures. Navigation helped biopsy trajectories spare the eloquent structures during the operation. No statistical difference was found between postoperative and preoperative neurological status, despite all the lesions were adjacent to eloquent areas. Additionally, 20 patients totally received 21 iMRI scanning. iMRI helped revise incorrect biopsy site in one case and detected intraoperative hemorrhage in another case, both of cases were treated immediately and effectively. No MNVR related adverse events and complications occurred.@*Conclusions@#MNVR-aided needle biopsy of intracranial eloquent lesions is a safe, novel and efficient biopsy modality. This technique is helpful to reduce the incidence of surgery related neurological deficits.
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Objective To analyze the application of intraoperative neurophysiological monitoring combined with neuronavigation multi-modal fusion technology in the brainstem glioma resection. Methods One hundred twenty patients with brainstem glioma were divided into observation group and control group. The control group was treated by traditional operation, while the observation group was treated by intraoperative nerve electrophysiological monitoring combined with neuronavigation multimodal fusion technology. The general condition, clinical efficacy, KPS score, complications and survival rate of the two groups were compared. Results The effect was significantly better in the observation group(76.66%)than in control group(53.33%)( x2=11.962,P=0.001).KPS scores were significantly higher in the observation group (27.91 ±1.98) than in the control group (12.11 ±2.13)(t=32.669, P<0.001). Conclusions Intraoperative nerve electrophysiological monitoring plus neuronavigation multimodality fusion technology can improve clinical efficacy and quality of life in patients with brainstem glioma.
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Objective To investigate the clinical effect of neuronavigation combined with intraoperative ultrasound-assisted microsurgery for the treatment of supratentorial intracranial arteriovenous malformations (AVMs). Methods From March 2014 to February 2017,14 patients with supratentorial intracranial AVMs treated with neuronavigation combined with intraoperative ultrasound-assisted microsurgery at the Department of Neurosurgery,the Second Affiliated Hospital of Anhui Medical University were enrolled retrospectively.According to Spetzler-Martin (S-M)classification,there were 2 cases of grade Ⅰ,6 cases of grade Ⅱ,5 cases of grade Ⅲ,and 1 case of grade Ⅳ. The clinical data,surgical effects,and complications were analyzed. Results (1)The lesions of 13 patients were completely removed and 1 had residue. Four patients had preoperative limb hemiplegia and one had postoperative limb weakness. They were followed up for 1 to 4 years. The myodynamia was improved or returned to normal. (2)One patient had postoperative intracranial infection and was cured after anti-infective treatment. Of the 4 patients with preoperative epilepsy, 3 did not have postoperative recurrence and 1 was controlled. (3)The modified Rankin scale (mRS)scores at 3 months after operation were as follows:8 patients were 0,4 were 1,and 2 were 2. The clinical symptoms and imaging were followed up for 1-4 years,no vascular malformation recurrence and rebleeding were observed. Conclusion The preliminary observation showed that the neuronavigation and intraoperative ultrasound multimodality assisted microsurgical treatment of supratentorial AVMs had the characteristics of accurate location and high safety,and the clinical efficacy was satisfactory.
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Objective To investigate the safety and clinical efficacy of magnetic resonance neuronavigation assisted technique in neurosurgical clipping of pericallosal aneurysms. Methods From January 2010 to January 2017,40 consecutive patients with pericallosal aneurysm treated with neurosurgical clipping at the Department of Neurosurgery,the 175th Hospital of PLA were enrolled retrospectively. They were diagnosed by CT angiography (CTA),magnetic resonance angiography (MRA)or digital subtraction angiography (DSA)before operation. According to the different surgical methods,40 patients were divided into either a routine surgical group (n＝18)or a neuronavigation assistance group (n＝22). On the basis of the conventional longitudinal fissure approach,the neuronavigation assistance group was treated with the magnetic resonance neuronavigation technique. The aneurysms and upper drainage vein,design incision and surgical approaches were accurately located. The operation time,surgical complications (edema or infarction after drainage vein injury and secondary bleeding in the operated area)and proportion of good prognosis (the modified Rankin scale [mRS]score ＜3)were compared. Results (1)Under the microscope,40 patients underwent clipping of pericallosal aneurysms via longitudinal fissure approach. Postoperative CTA or DSA confirmed that they were all completed clipped. The operation time of the neuronavigation assistance group were shorter than that of the routine surgical group (2. 5 ± 0. 5 h vs. 3. 5 ± 0. 4 h,t＝1. 254),and the proportion of edema or venous infarction was less than that of the routine surgical group (4. 5%[1／22]vs. 6／18). The difference between the two groups was statistically significant (all P＜0. 05);there were no significant differences in the incidences of accidental rupture and secondary hemorrhage between the two groups (all P＞0. 05). (2)Both groups of patients completed the 6-month follow-up. There were 12 patients (12／18)with good prognosis in the routine surgery group and 20 (90. 9%)with good prognosis in the neuronavigation assistance group. There was no significant difference in the proportion of good prognosis between the two groups (χ2＝3. 545,P＞0. 05). Conclusions The use of magnetic resonance neuronavigation assisted technique helps the precise intraoperative positioning of the lesions and surgical approach optimization,thereby effectively implementing brain protection,reducing the risk of microsurgery, and improving the accuracy and safety of the surgery. It is an effective auxiliary means of neurosurgical clipping of pericallosal aneurysms.
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Objective To explore the clinical value and effect of neuronavigation-assisted neuroendoscopy for hypertensive lobar cerebral hemorrhage. Methods Clinical data of 35 cases treated with the neuroendoscopy (neuroendoscopy group) and 32 cases treated with the neuronavigation-assisted microscope (microscope group) were retrospectively analyzed. Data of the operative time, intraoperative blood loss and the clearance rate of hematoma, the postoperative complications (stress gastric ulcer, pulmonary infection, urinary tract infection and intracranial infection), the hospital stay, postoperative ability of daily life (ADL) in 6 months and fatality rates were observed and compared. Results The operative time and intraoperative blood loss were less in the neuroendoscopy group than those in the microscopy group, and the clearance rate of hematoma was higher in neuroendoscopy group than that in the microscopy group (P＜0.01). There was no significant difference in postoperative complications between the two groups (P＞0.05). The hospital stay was less in the neuroendoscopy group than that of the microscope group (P＜0.01). On the basis of ADL grading method, the prognosis of the endoscopy group was better than that of the craniotomy group (P＜0.05). There was no significant difference in the fatality rate between the neuroendoscopy group and the microscopy group (P＞0.05). Conclusion The neuronavigation-assisted neuroendoscopy is a safe and effective surgical method for hypertensive lobar cerebral hemorrhage, and which can improve the prognosis of patients with hypertensive intracerebral hemorrhage.