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Preprocedural determination of an occlusion pathomechanism in endovascular treatment of acute stroke: a machine learning-based decision
Conclusions An ML-PM could accurately determine an occlusion pathomechanism with common preprocedural findings. A decision flowchart consisting of the four most influential findings was clinically applicable and superior to single common preprocedural findings for determining an occlusion pathomechanism.
Source: Journal of NeuroInterventional Surgery - August 29, 2023 Category: Neurosurgery Authors: Baek, J.-H., Kim, B. M., Kim, D. J., Heo, J. H., Nam, H. S., Kim, Y. D., Rho, M. H., Chung, P.-W., Won, Y. S., Chung, Y. Tags: Ischemic stroke Source Type: research

O32/312 Continuous evaluation of the ESMINT/EYMINT E-fellowship as a European tele-learning network for neurointerventional trainees
ConclusionTele-observerships may supplement neurointerventional hands-on training in particular of low-frequency high-complexity procedures.Disclosure of InterestMatthias Bechstein: Nothing to discloseHelena Guerreiro: Nothing to discloseTeresa Nawka: Nothing to discloseVladimir Kalousek: Nothing to discloseJens Fiehler: Nothing to discloseUta Hanning: Nothing to disclose.
Source: Journal of NeuroInterventional Surgery - August 21, 2023 Category: Neurosurgery Authors: Bechstein, M., Guerreiro, H., Nawka, M. T., Kalousek, V., Fiehler, J., Paula Hanning, U. M. Tags: 3.3 OTHER - Miscellaneous Source Type: research

P040/41 Imaging study in stroke diagnosis and treatment in a referral center Chile
ConclusionAs a conclusion, different topics of obtaining and observing images in Stroke are obtained. Either CT, MRA, Cerebral Angiography. Both nurses and technicians should know some generalities and topics of nomenclature, neuroanatomy, general and specific characteristics of each of the imaging techniques that we want to share for this ETMINT 2023 seminar.Disclosure of InterestNothing to disclose
Source: Journal of NeuroInterventional Surgery - August 21, 2023 Category: Neurosurgery Authors: Nunez, F. B. Tags: 4. Ischemic stroke Source Type: research

P041/42 Imaging study in stroke diagnosis and treatment in a referral center in Chile
ConclusionAs a conclusion, different topics of obtaining and observing images in Stroke are obtained. Either CT, MRA, Cerebral Angiography. Both nurses and technicians should know some generalities and topics of nomenclature, neuroanatomy, general and specific characteristics of each of the imaging techniques that we want to share for this ETMINT 2023 seminar.Disclosure of InterestNothing to disclose
Source: Journal of NeuroInterventional Surgery - August 21, 2023 Category: Neurosurgery Authors: Nunez, F. B. Tags: 4. Ischemic stroke Source Type: research

LB-009 Smartphone-enabled machine learning algorithms for autonomous stroke detection
ConclusionsOur results confirm that smartphone enabled ML-algorithms can reliably identify acute stroke features with high accuracy comparable to neurologists’ clinical impression.DisclosuresR. Raychev: 1; C; Boehringer Ingelheim. 2; C; Rapid Medical, Perflow Medical. 4; C; Neuronics Medical. J. Saver: 2; C; Neuronics Medical. D. Liebeskind: 2; C; Neuronics Medical. M. Nour: 2; C; Neuronics Medical, Ischemia View. S. Petkov: 4; C; Neuronics Medical. D. Angelov: 4; C; Neuronics Medical. D. Georgiev: None. A. Koralova: None. F. Aleksiev: None. T. Sakelarova: None. D. Kalpachka: None. R. Kalpachki: None. E. Kostadinova:...
Source: Journal of NeuroInterventional Surgery - August 3, 2023 Category: Neurosurgery Authors: Raychev, R., Saver, J., Liebeskind, D., Nour, M., Petkov, S., Angelov, D., Georgiev, D., Koralova, A., Aleksiev, F., Sakelarova, T., Kalpachka, D., Kalpachki, R., Kostadinova, E., Manolova, T., Milanov, I. Tags: SNIS 20th annual meeting late-breaking oral abstracts Source Type: research

E-186 Assessing congruency of first pass effect on outcomes in mechanical thrombectomy for large vessel occlusions via unsupervised machine learning
This study was approved by the local institutional review board (IRB). Clustered outcomes to formulate clusters included the number of passes, the final reperfusion obtained, the discharge NIHSS, and complications. FPE was defined as TICI 2C or 3 reperfusions on the first pass. Uniform manifold approximations and projections (UMAP) and K-means unsupervised clustering were done to identify outcome clusters. Logistic regression with and without interaction coefficients was used to determine associated factors with cluster membership or FPE. P-values less than 0.05 were considered significant.Results287 consecutive patients w...
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Catapano, J., Naik, A., Koester, S., Singh, R., Ostinnington, H., Rangel, I., Desai, S., Winkler, E., Ducruet, A., Albuquerque, F., Jadhav, A. Tags: SNIS 20th annual meeting electronic poster abstracts Source Type: research

E-236 Automated pre- and post-operative volumes estimates risk of retreatment in chronic subdural hematoma: a retrospective, multi-center study
Conclusions/RelevanceLarger pre- and post-operative cSDH volumes increase the risk of cSDH retreatment. Volume thresholds may allow identification of patients at high risk of cSDH retreatment who would benefit from adjunct treatments. Machine learning algorithm can quickly provide accurate estimates of pre and post operative volumes.Disclosures J. Vargas: 2; C; Viz.AI, Synchron, Borvo, Imperative Care. 4; C; Viz.AI, Imperative Care, Cerenovus, Q’APel. M. Pease: None. M. Snyder: None. J. Blalock: None. S. Wu: None. E. Nwachuku: None. A. Mital: None. D. Okonkwo: None. R. Kellogg: 2; C; VizAI, Cerenovus, Imperative Care. 4; C; VizAI.
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Vargas, J., Pease, M., Snyder, M., Blalock, J., Wu, S., Nwachuku, E., Mital, A., Okonkwo, D., Kellogg, R. Tags: SNIS 20th annual meeting electronic poster abstracts Source Type: research

P-008 Probabilistic ensemble learning for prediction of stroke thrombectomy outcomes from the neurovascular quality initiative-quality outcomes database (NVQI-QOD) registry
ConclusionsThis study demonstrates the utility of probabilistic ensemble learning in clinical decision-making and prognosis. It can provide robust predictions as well as quantify data uncertainty. Our results regarding NIHSS changes reinforce the substantial benefits of MT, that can improve outcomes in nearly half of patients. The degree of disability relevant to the 90-day follow-up mRS can be determined by probabilistic learning available as early as discharge.Disclosures C. Zhou: None. S. Faruqui: None. A. Patel: None. R. Abdalla: None. A. Shaibani: None. M. Potts: None. B. Jahromi: None. S. Ansari: None. D. Cantrell: None.
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Zhou, C., Faruqui, S., Patel, A., Abdalla, R., Shaibani, A., Potts, M., Jahromi, B., Ansari, S., Cantrell, D. Tags: SNIS 20th annual meeting oral poster abstracts Source Type: research

Thrombosis origin identification of cardioembolism and large artery atherosclerosis by distinct metabolites
Conclusions Six metabolites as potential predictors for distinguishing between cerebral thrombi of CE and LAA origin were identified. The results are useful for understanding the pathogenesis and for secondary stroke prevention.
Source: Journal of NeuroInterventional Surgery - June 16, 2023 Category: Neurosurgery Authors: Li, W., Bai, X., Hao, J., Xu, X., Lin, F., Jiang, Q., Ding, C., Dai, G., Peng, F., Zhang, M., Feng, Y., Wang, J., Chen, X., Xue, T., Guo, X., Fu, Z., Chen, W.-h., Zhang, L., Wang, C., Jiao, L. Tags: Basic science Source Type: research

Automated detection of arterial landmarks and vascular occlusions in patients with acute stroke receiving digital subtraction angiography using deep learning
Conclusion These results may serve as an unbiased standard for clinical stroke trials, as optimal standardization would be useful for core laboratories in endovascular thrombectomy studies, and also expedite decision-making during DSA-based procedures.
Source: Journal of NeuroInterventional Surgery - May 16, 2023 Category: Neurosurgery Authors: Khankari, J., Yu, Y., Ouyang, J., Hussein, R., Do, H. M., Heit, J. J., Zaharchuk, G. Tags: Ischemic stroke Source Type: research

Impedance-based sensors discriminate among different types of blood thrombi with very high specificity and sensitivity
Conclusions Combining EIS measurements with machine learning provides a highly effective approach for discriminating among different thrombus types and liquid blood. These findings raise the possibility of developing a probe-like device (eg, a neurovascular guidewire) integrating an impedance-based sensor. This sensor, placed in the distal part of the smart device, would allow the characterization of the probed thrombus on contact. The information could help physicians identify optimal thrombectomy strategies to improve outcomes for stroke patients.
Source: Journal of NeuroInterventional Surgery - May 16, 2023 Category: Neurosurgery Authors: Messina, P., Garcia, C., Rambeau, J., Darcourt, J., Balland, R., Carreel, B., Cottance, M., Gusarova, E., Lafaurie-Janvore, J., Lebedev, G., Bozsak, F., Barakat, A. I., Payrastre, B., Cognard, C. Tags: Open access, Ischemic stroke Source Type: research

Machine learning and acute stroke imaging
Conclusions ML in acute ischemic stroke imaging has already made tremendous headway. Additional applications and further integration with clinical care is inevitable. Thus, facility with these approaches is critical for the neurointerventional clinician.
Source: Journal of NeuroInterventional Surgery - January 11, 2023 Category: Neurosurgery Authors: Sheth, S. A., Giancardo, L., Colasurdo, M., Srinivasan, V. M., Niktabe, A., Kan, P. Tags: Neuroimaging Source Type: research

Prediction of bleb formation in intracranial aneurysms using machine learning models based on aneurysm hemodynamics, geometry, location, and patient population
Conclusions Based on the premise that aneurysm characteristics prior to bleb formation resemble those derived from vascular reconstructions with their blebs virtually removed, machine learning models can identify aneurysms prone to bleb development with good accuracy. Pending further validation with longitudinal data, these models may prove valuable for assessing the propensity of IAs to progress to vulnerable states and potentially rupturing.
Source: Journal of NeuroInterventional Surgery - September 14, 2022 Category: Neurosurgery Authors: Salimi Ashkezari, S. F., Mut, F., Slawski, M., Cheng, B., Yu, A. K., White, T. G., Woo, H. H., Koch, M. J., Amin-Hanjani, S., Charbel, F. T., Rezai Jahromi, B., Niemelä, M., Koivisto, T., Frosen, J., Tobe, Y., Maiti, S., Robertson, A. M., Cebral, Tags: Hemorrhagic stroke Source Type: research

P53 ESMINT/EYMINT E-fellowship - experiences from two seasons and implications for future neurointerventional tele-observerships
ConclusionsTele-observerships may facilitate location-independent training of complex neurointerventional procedures through high levels of situational awareness. Future programs will have to incorporate individual training schedules to enable fellows to better attend complex elective procedures.ReferencesBechstein M, Elsheikh S, Wodarg F, et al. Republished: Interhospital Teleproctoring of Endovascular Intracranial Aneurysm Treatment Using a Dedicated Live-streaming Technology: First Experiences during the Covid-19 Pandemic. J Neurointerv Surg 2021;13(2):E1.Bechstein M, Buhk JH, Frolich AM, et al. Training and Supervision...
Source: Journal of NeuroInterventional Surgery - August 29, 2022 Category: Neurosurgery Authors: Bechstein, M., Hanning, U., Martinez-Galdamez, M., Kalousek, V., Fiehler, J., Guerreiro, H. Tags: 14th Congress of the European Society of Minimally Invasive Neurological Therapy 2022 Meeting Abstracts Source Type: research

P94 Deep learning-based automated device detection for assessment standardisation in mechanical thrombectomy
ConclusionAutomated DSA assessment on device presence and differentiation is feasible. Its application on evaluation of wider data-sets should be further evaluated.ReferencesNielsen M, Waldmann M, Frölich, et al. Deep learning-based automated thrombolysis in cerebral infarction scoring: a timely proof-of-principle study. Stroke 2021 Nov;52(11):3497–504.Vaswani A, Shazeer N, Parmar N, et al. Attention is all You Need. Advances in Neural Information Processing Systems. 2017;30.Ali A, Touvron H, Caron M, et al. XCIT: Cross-Covariance Image Transformers. Advances in Neural Information Processing Systems. 2021 Dec...
Source: Journal of NeuroInterventional Surgery - August 29, 2022 Category: Neurosurgery Authors: Guerreiro, H., Nielsen, M., Sentker, T., Schmidt, E., Kniep, H., Fiehler, J., Werner, R. Tags: 14th Congress of the European Society of Minimally Invasive Neurological Therapy 2022 Meeting Abstracts Source Type: research

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