Accuracy and Reliability of Multiphase CTA Perfusion for Identifying Ischemic Core Correction to: Clin Neuroradiol 2018 https://doi.org/10.1007/s00062-018-0717-x Unfortunately, the author list of the original version of this article contains a mistake. The middle name of the author “Rani Gupta Sah” was erroneously tagged as part of the surname in the article’s metadata. This mistake

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Neuroimaging of Intracranial Perfusion and the Clinical Diagnosis of Brain Death: Setting the Gold Standard in Humans

Delayed tine Displacement of a CASPER Carotid Artery Stent due to Styloid Process Compression

Parkinsonism Caused by Viral Encephalitis Affecting the Bilateral Substantia Nigra

Reply to Letter to the Editor “Neuroimaging of Intracranial Perfusion and the Clinical Diagnosis of Brain Death: Setting the Gold Standard in Humans”

Removal of a Distally Migrated and Wedged Small Detachable Coil Using a 4MAX Penumbra Reperfusion Catheter

Intracranial Rescue Stent Angioplasty After Stent-Retriever Thrombectomy Abstract Purpose Stent-retriever thrombectomy (SRT) for acute intracranial large artery occlusion (LAO) may not result in permanent recanalization in rare cases, e.g. due to an underlying stenosis or dissection. In this specific patient group, rescue stent angioplasty (RSA) may be the only treatment option to achieve permanent vessel patency and potentially a good clinical outcome. To date, the experience with RSA is limited. Methods In this retrospective analysis, interventional and clinical data of patients with acute intracranial LAO of the anterior and posterior circulation who underwent RSA after SRT due to an underlying lesion between 2012–2017 in four neurovascular centers were studied. Results In this study 34 patients (mean age 67 years) were included whereby 18 patients had anterior circulation LAO and 16 patients posterior circulation LAO. The SRT maneuver count ranged between 1 and 15 (median 2). Indications for RSA were an immediate re-occlusion in 25 (74%), and a persistent high-grade stenosis in 9 patients (26%). The RSA was technically feasible in 33 patients (97%). A mTICI 2b/3 result was obtained in 26 patients (76%). Median onset-to-recanalization time was 248 min (range 80–650 min). After 3 months 10/34 patients (29%) had a good clinical outcome (modified Rankin Scale, mRS 0–2). In detail, 4/18 patients (22%) with anterior circulation LAO and 6/16 patients (38%) with posterior circulation LAO were functionally independent. Conclusion The use of RSA can be considered for acute intracranial LAO in cases with immediate re-occlusion or high-grade stenosis after SRT alone.

Cervical Spine Prospective Feasibility Study Abstract Purpose Diffusion tensor imaging (DTI) in flexion-extension may serve as a diagnostic tool to improve the sensitivity for detection of myelopathy. In this study, the feasibility and reproducibility of dynamic DTI in the cervical spinal cord was assessed in healthy volunteers and patients. Methods All subjects were examined in maximum neck flexion-extension in a 3T magnetic resonance imaging (MRI) scanner. Range of motion, space available for the spinal cord, fractional anisotropy (FA) and apparent diffusion coefficient (ADC) were measured and compared between the neck positions. Results Volunteers showed no variation in ADC and FA. In patients, extension produced higher ADC in the diseased than in the control segments (p = 0.0045). The ADC of the affected segments was higher in extension than in the neutral position (p = 0.0030) or in flexion (p = 0.0002). The FA was significantly lower in extension in patients at both the control level C2/3 (p = 0.0154) and the affected segment (p = 0.0187). Conclusions Dynamic DTI of the cervical spine is feasible and ADC increased in the patient group in extension. This finding may open a previously unexplored avenue to attempt an earlier identification of myelopathy.