Breaking with a dogma: persisting diffusion restrictions (pDWI) in follow-up after endovascular treatment for stroke
Conclusion Smaller foci of persisting diffusion restriction (pDWI lesions) in the follow-up after endovascular treatment for stroke are frequent and likely represent a slowed ADC signal progression within a formerly large infarct core. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Hernandez Petzsche, M. R., Boeckh-Behrens, T., Bernkopf, K., Henze, S., Maegerlein, C., Sepp, D., Zimmer, C., Wunderlich, S., Ikenberg, B., Berndt, M. T. Tags: Neuroimaging Source Type: research

Natural history of spontaneous intracranial hypotension: a clinical and imaging study
Conclusions In patients with brain MRI evidence of SIH, almost 25% demonstrated radiographic improvement, and 15% reported clinical improvement, during at least 6 months of observation or conservative treatment. Most had stable, persistent MRI abnormalities and symptoms when SIH was untreated. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Williams, J., Brinjikji, W., Cutsforth-Gregory, J. K. Tags: Neuroimaging Source Type: research

Robotic-guided direct transtemporal embolization of an indirect carotid cavernous fistula
A middle-aged patient presented with right-sided chemosis, exophthalmos, and progressive visual loss. Digital subtraction angiography revealed a type D carotid-cavernous fistula (CCF). Transarterial embolization through the internal maxillary artery was unsuccessful, and there was no venous access to the CCF. A robotic-guided direct transtemporal embolization of the CCF with Onyx was performed, resulting in successful fistula obliteration and symptom resolution. This is the first reported case of a robotic-guided direct transcranial CCF embolization. We include a technical video that demonstrates this procedure (Supplement...
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Karas, P. J., Lee, J. E., Frank, T. S., Morden, F. T., Shaltoni, H., Kan, P. Tags: New devices New devices and techniques Source Type: research

Catheter design primer for neurointerventionalists
Neurovascular catheter technology has rapidly evolved over the past decade. While performance characteristics are well known to the practitioner, the design features of these new-generation catheters and their implications on performance metrics remain a mystery to most clinicians due to the limited number of available resources. This knowledge gap hampers informed device choices and also limits collaboration between clinicians and engineers. To aid fellow neurointerventionalists, in this primer we have summarized the basic concepts of catheter design and construction. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Bilgin, C., Hutar, J., Li, J., Castano, O., Ribo, M., Kallmes, D. F. Tags: New devices New devices and techniques Source Type: research

LIQUID - Treatment of high-grade dural arteriovenous fistulas with Squid liquid embolic agent: a prospective, observational multicenter study
Conclusion Squid is a safe and effective liquid embolic agent for the treatment of high-grade DAVFs. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Vollherbst, D. F., Boppel, T., Wallocha, M., Berlis, A., Maurer, C. J., Weber, W., Fischer, S., Bock, A., Meckel, S., Bohner, G., Liebig, T., Herweh, C., Bendszus, M., Chapot, R., Möhlenbruch, M. A. Tags: Open access, New devices New devices and techniques Source Type: research

Decrease in cortical vein opacification predicts outcome after aneurysmal subarachnoid hemorrhage
Conclusions Development of decreased venous filling on CTA is associated with poor outcome after aSAH. This association suggests that venous hemodynamics may be reflective of, or contribute to, the pathophysiological mechanisms of brain injury after aSAH. Larger prospective studies are necessary to substantiate our findings. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Dodd, W. S., Dayton, O., Lucke-Wold, B., Reitano, C., Sorrentino, Z., Busl, K. M. Tags: Hemorrhagic stroke Source Type: research

Tailored antiplatelet therapy in stent assisted coiling for unruptured aneurysms: a nationwide registry study
Conclusion Tailored antiplatelet therapy in stent assisted coiling for unruptured aneurysms reduced thromboembolic events and poor outcomes without increasing bleeding. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Koh, J. S., Hwang, G., Park, J. C., Lee, C.-Y., Chung, J., Lee, S.-W., Kwon, H.-J., Kim, S.-R., Kang, D.-H., Kwon, S. C., Kim, S.-T., Chang, C. H., Jang, D.-K., Choi, J. H., Kim, Y. W., Kim, B.-T., Shin, B. G., You, S. H., Chung, S. Y., Ko, J., Kim, T. G. Tags: Hemorrhagic stroke Source Type: research

Parent artery occlusion after pipeline embolization device implantation of intracranial saccular and fusiform aneurysms
Conclusions In this study, the incidence rate of PAO following PED implantation was 2.38% in intracranial saccular and fusiform aneurysms. Aneurysm size and residual presence of poor wall apposition after balloon angioplasty were risk factors for PAO. Further research is required to better understand the mechanisms of PAO. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Han, M., Tong, X., Wang, Z., Liu, A. Tags: Hemorrhagic stroke Source Type: research

Surpass Intracranial Aneurysm Embolization System Pivotal Trial to Treat Large or Giant Wide-Neck Aneurysms - SCENT: 3-year outcomes
Conclusion The present findings support the long-term safety and effectiveness of the Surpass Streamline flow diverter device. Trial registration NCT01716117. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Hanel, R. A., Cortez, G. M., Coon, A. L., Kan, P., Taussky, P., Wakhloo, A. K., Welch, B. G., Dogan, A., Bain, M., De Vries, J., Ebersole, K., Meyers, P. M., SCENT Investigator Group, Coon, Colby, Caplan, Lin, Kan, Mokin, Katz, Dogan, Barnwell, Priest, Bo Tags: Hemorrhagic stroke Source Type: research

Effect of prolonged microcirculation time after thrombectomy on the outcome of acute stroke
Conclusions The mCCT immediately after recanalization is a powerful predictive factor for 90-day functional prognosis. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Ji, Y., Shi, B., Yuan, Q., Wu, K., Fang, J., Wang, H., Miao, Z., Sun, Y., Huang, X., Zhou, Z. Tags: Open access, Ischemic stroke Source Type: research

Technical and clinical outcomes in concurrent multivessel occlusions treated with mechanical thrombectomy: insights from the STAR collaboration
Conclusion Compared with EVT for single vessel occlusions, EVT in appropriately selected patients with MTVOs has a similar efficacy and safety profile. (Source: Journal of NeuroInterventional Surgery)
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Saad, H., Eshraghi, S., Alawieh, A. M., Akbik, F., Cawley, C. M., Howard, B. M., Ash, M., Hsu, A., Pabaney, A., Maier, I., Al Kasab, S., El Naamani, K., Jabbour, P., Kim, J.-t., Wolfe, S. Q., Rai, A., Starke, R. M., Psychogios, M.-N., Shaban, A., Arthur, Tags: Ischemic stroke Source Type: research

Recent developments in pre-hospital and in-hospital triage for endovascular stroke treatment
Triage describes the assignment of resources based on where they can be best used, are most needed, or are most likely to achieve success. Triage is of particular importance in time-critical conditions such as acute ischemic stroke. In this setting, one of the goals of triage is to minimize the delay to endovascular thrombectomy (EVT), without delaying intravenous thrombolysis or other time-critical treatments including patients who cannot benefit from EVT. EVT triage is highly context-specific, and depends on availability of financial resources, staff resources, local infrastructure, and geography. Furthermore, the EVT tr...
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Ospel, J. M., Dmytriw, A. A., Regenhardt, R. W., Patel, A. B., Hirsch, J. A., Kurz, M., Goyal, M., Ganesh, A. Tags: Editor''s choice, Ischemic stroke Source Type: research

Counterpoint: stenting for idiopathic intracranial hypertension should be trialed
We have an obligation to our patients to prove that what we do works—that the benefits of our procedures outweigh their risks. That evidence base is notably lacking for dural sinus stenting for patients with idiopathic intracranial hypertension (IIH). We do not dispute that many patients with IIH have a pressure gradient in their dural sinuses, typically due to what is almost certainly extrinsic compression of their transverse sinuses.1 Stenting of these patients reduces central venous and intracranial pressure, conclusively and dramatically.2 This is generally accompanied by improvement in many of the symptoms repor...
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Derdeyn, C. P., Wall, M. Tags: Commentary Source Type: research

Point:Dural venous sinus stenting should be considered a first-line treatment option for select patients with idiopathic intracranial hypertension
There is substantial recent interest in the pages of JNIS regarding cerebral venous disease. Considered a neglected area in neurointervention for many years, there has been an uptick particularly in the study of venous sinus stenosis and idiopathic intracranial hypertension (IIH; previously known as pseudotumor cerebri). A recent editorial1 described the first meeting of the SNIS Cerebral Venous and Cerebrospinal Fluid (CSF) Disorders Committee, including a motivation to ‘provide thought leadership for the SNIS on the science, regulatory, device innovation, and clinical trials related to these disease processes&rsquo...
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Levitt, M. R. Tags: Commentary Source Type: research

61624/26 and You!
Introduction Neurointerventional (NI) specialists are likely aware that two seemingly innocuous five-digit numbers—61 624 and 61 626—have outsized importance in our professional lives as they represent ‘transcatheter or percutaneous permanent occlusion or embolization of intra- and extra-Central Nervous System’ in the Current Procedural Technology (CPT) coding structure. Recently, 61624/26 have been flagged for reconstitution and revaluation. The goal of this note is to familiarize NI practitioners with why this revaluation is occurring and describe a survey that NI specialists might be asked to par...
Source: Journal of NeuroInterventional Surgery - October 12, 2023 Category: Neurosurgery Authors: Hirsch, J. A., Milburn, J. M., Woo, H., Chen, M., Chen, M. M., Mocco, J. Tags: Editor ' s column Source Type: research