Relationship between hyoid-carotid distance, hyoid position and morphology and degree of stenosis and associated stroke: Hyoid-carotid relationship.

Background: Pressure on carotid artery by hyoid bone may influence plaque formation. We studied CTA-based hyoid-carotid anatomical interaction and its relationship with carotid stenosis degree and stenosis-related stroke.

Methods: We retrospectively analysed pre-operative CTA of 205 consecutive adults having undergone carotid endarterectomy (CEA) for asymptomatic or symptomatic stenosis.

Intracranial Drain-Related Intracerebral Hemorrhage in Two Sporadic Cerebral Amyloid Angiopathy Patients.

 Alzheimer's disease and cerebral amyloid angiopathy (CAA) are often associated. Amyloid accumulation within leptomeningeal and small/median-sized cerebral blood vessels in CAA results in vessel fragility, leading to spontaneous leptomeningeal bleeding, lobar intracerebral hemorrhage (ICH) and cerebral microbleeds. CAA is also associated with non-traumatic subdural hematoma.

Diagnostic Accuracy of Posterior/Anterior Periventricular WMH Ratio to Differentiate CAA From Hypertensive Arteriopathy.

Background: Periventricular white matter hyperintensities (PVWMHs) in cerebral amyloid angiopathy (CAA) have been reported posterior predominant using semiautomated segmentation method and logarithmic transformation. We aimed to compare PVWMH extent and posterior/anterior distribution between patients with CAA and patients with hypertensive arteriopathy with radiological tools available in daily practice.

Methods: We retrospectively analyzed confluent PVWMH directly adjacent to lateral ventricles on axial FLAIR (fluid-attenuated inversion recovery) from 108 patients with CAA and 99 patients with hypertensive arteriopathy presenting with hemorrhage-related symptoms consecutively recruited in our stroke database (Nîmes University Hospital, France) between January 2015 and March 2022.

Corticospinal tract hyperintensity in patients with LGI1-antibody encephalitis and other central nervous system disorders with neuroglial antibodies.

The frequency of corticospinal tract (CST) T2/FLAIR hyperintensity in disorders with neuroglial antibodies is unclear. Herein, we retrospectively reviewed brain MRIs of 101 LGI1-antibody encephalitis patients, and observed CST hyperintensity in 30/101 (30%). It was mostly bilateral (93%), not associated with upper motor neuron signs/symptoms (7%), and frequently decreased over time (39%).

From Sensors to Digital Twins toward an Iterative Approach for Existing Manufacturing Systems.

Digital twin technology is a highly valued asset in the manufacturing sector, with its unique capability to bridge the gap between the physical and virtual parts. The impact of the rapid increase in this technology is based on the collection of real-world data, its standardization, and its widespread deployment on an existing manufacturing system. This encompasses sensor values, PLC internal states, and IoT, as well as how the means of linking these data with their digital counterparts.

Acute phase supra-aortic intraluminal thrombus signal changes on magnetic resonance angiography: A case series: Intraluminal thrombus signal changes on MRA.

Background And Objectives: Intraluminal thrombus (ILT) is a relatively rare cause of stroke. MRI/MRA is increasingly used for stroke patients eligible for acute treatment. Radiological ILT characteristics have never been studied systematically on MRA.

Cerebellar Superficial Siderosis in Cerebral Amyloid Angiopathy on 1.5T T2*-Weighted Imaging.

Background: Cerebellar superficial siderosis (SS) has been recently reported to be present in about 10% of both hereditary and sporadic cerebral amyloid angiopathy (CAA) on 3T MRI using primarily susceptibility-weighted imaging.

Objectives: Our aim was to assess cerebellar SS in sporadic CAA patients using 1.5T T2*-weighted MRI and to evaluate possible underlying mechanisms.

Personalized dietary advices provided by a dietitian increase calcium intake in outpatients with multiple sclerosis-Results from a randomized, controlled, single-blind trial.

Background And Aims: Multiple sclerosis (MS) is associated with osteoporosis, possibly due to neurological disability and decreased calcium intake. The objective of this study was to evaluate the efficacy of a personalized nutritional advice program by a dietitian compared to the delivery of a standard advice form to optimize dietary calcium intake in outpatients with MS.

Methods: We performed a randomized, controlled, parallel trial comparing the efficacy of a personalized dietary advice (PDA) program to standard advice form (SAF) to increase daily calcium intake in MS patients.

Brain hemorrhage on 24h-CT and functional outcome in stroke patients with cerebral amyloid angiopathy features on pre-thrombolysis MRI treated with intravenous thrombolysis: A case series.

Background And Objectives: In stroke patients treated with intravenous thrombolysis (IVT), presence and high number of strictly lobar cerebral microbleeds (compatible with cerebral amyloid angiopathy, CAA) seems to be associated with increased risk of hemorrhagic transformation, symptomatic hemorrhagic transformation, remote hemorrhage, and poor functional outcome. Some of these CAA patients with cerebral microbleeds also have chronic lobar intracerebral hemorrhage. Few data are available on IVT-treated CAA patients showing cortical superficial siderosis.

Primary acute convexity subarachnoid hemorrhage in older patients: analysis of baseline, clinical and MRI characteristics including quantitative surface study and topographical probabilistic mapping of convexity subarachnoid hemorrhage.

Objectives: Primary acute convexity subarachnoid hemorrhage (cSAH) in older patients can be observed in cerebral amyloid angiopathy (CAA) or idiopathic (with cSAH as potential initial manifestation of suspected CAA). We aimed to analyze baseline, clinical and MRI (including quantitative cSAH surface analysis and topographical probabilistic cSAH mapping) characteristics in elderly cSAH patients with CAA.

Materials And Methods: Baseline/clinical/MRI characteristics of 50 consecutive primary acute cSAH patients ≥ 55 years with suspected/possible/probable CAA were retrospectively analyzed.

Unilateral subcortical extensive dilated perivascular spaces associated with superior sagittal sinus perivenous dilated spaces.

We present the MRI of a 70-year-old patient showing unilateral subcortical extensive dilated perivascular spaces with surrounding fluid-attenuated inversion recovery hyperintensities associated with the presence of small cysts and tubular hypointensities in and near the superior sagittal sinus co-locating with draining cortical veins on gadolinium-enhanced T1-weighted imaging representing probably (dilated) spaces between pial sheath and cortical vein walls. These (peri)venous superior sagittal sinus cysts seem to represent either hydrops cause (by blocking interstitial fluid flow in perivenous subpial space, via meningeal lymphatics) or consequence (where cysts might have been formed due to subpial fluid flow obstruction by unknown cause).

Symmetrical isolated globus pallidus infarction due to bilateral carotid artery dissection.

A 43-year-old woman presented 1 day after whiplash injury with behavior change, hypersomnia, and abulia. MRI showed symmetrical globus pallidus infarction and bilateral watershed hypoperfusion. Magnetic resonance angiography (MRA) showed bilateral carotid artery dissection.

Brainstem lesions: MRI review of standard morphological sequences.

MRI signal changes in the brainstem are observed in a multitude of disorders including vascular diseases, neoplastic lesions, degenerative diseases, inflammatory disorders, metabolic diseases, infections, and trauma. In some diseases, brainstem involvement is typical and sometimes isolated, while in other diseases, brainstem lesions are only observed occasionally in the presence of other typical extra-brainstem abnormalities. In this review, we will discuss the MRI characteristics of brainstem lesions observed in different disorders associated with frequent and less frequent brainstem involvement.

Association of symptomatic atherosclerotic carotid arteries with plaque areas showing low densities on computed tomographic angiography.

Background And Purpose: Intraplaque hemorrhage is a key feature of vulnerable carotid atherosclerotic plaque (CAP), associated with low densities (<25 Hounsfield units [HU]) on computed tomographic angiography (CTA). This study aimed to analyze CAP on routine CTA performed in patients with symptomatic and asymptomatic carotid stenosis undergoing carotid endarterectomy (CEA) by assessing HU of the CAP area showing the lowest density (CAPALD) using radiological tools available in daily clinical practice, and to compare CAPALD values between symptomatic and asymptomatic carotids.

Methods: We retrospectively screened preoperative CTA scans of 206 consecutive adult patients undergoing CEA for symptomatic or asymptomatic stenosis.