Discrimination of HPV status using CT texture analysis: tumour heterogeneity in oropharyngeal squamous cell carcinomas
ConclusionSignificant differences were found in heterogeneity parameters from texture analysis of pretreatment CECT, according to HPV status. Texture analysis could be used as an adjunctive tool for diagnosis of HPV status in clinical practice. (Source: Neuroradiology)
Source: Neuroradiology - October 22, 2019 Category: Radiology Source Type: research

Promoting head CT exams in the emergency department triage using a machine learning model
ConclusionThe developed model can identify patients that need to undergo head CT exam already in the ED triage level and by that allow faster diagnosis and treatment. (Source: Neuroradiology)
Source: Neuroradiology - October 10, 2019 Category: Radiology Source Type: research

Feasibility and midterm outcomes of endovascular embolization for true posterior communicating artery aneurysms
ConclusionEVT of the true PcomA aneurysm is a safe and feasible procedure but may be associated with recurrence in midterm follow-up, requiring close surveillance and potential retreatment. (Source: Neuroradiology)
Source: Neuroradiology - September 21, 2019 Category: Radiology Source Type: research

Impact of hypertension on cerebral microvascular structure in CPAP-treated obstructive sleep apnoea patients: a diffusion magnetic resonance imaging study
ConclusionBased on IVIM analysis, cerebral microvascular structure and function showed no difference between hypertensive and normotensive patients with moderate-to-severe OSA treated with CPAP. Treatment adherence with antihypertensive drug regime and, in turn, controlled hypertension seems not to affect microvascular structure and perfusion of the brain.Trial registrationClinicalTrials.gov Identifier: NCT02493673 (Source: Neuroradiology)
Source: Neuroradiology - September 16, 2019 Category: Radiology Source Type: research

Diagnostic accuracy of flat-panel computed tomography in assessing cerebral perfusion in comparison with perfusion computed tomography and perfusion magnetic resonance: a systematic review
ConclusionsEven though FP-CT provides similar CBV values and reconstructed blood volume maps as CTP in cerebrovascular disease, additional studies are required in order to reliably compare its diagnostic accuracy with cerebral perfusion imaging. (Source: Neuroradiology)
Source: Neuroradiology - September 16, 2019 Category: Radiology Source Type: research

Multifaceted structural magnetic resonance imaging findings in demented patients with pathologically confirmed TDP-43 proteinopathy
AbstractThis short report clarifies the heterogeneity of structural magnetic resonance imaging (MRI) findings in seven demented patients due to pathologically accumulated TAR DNA-binding protein-43 (TDP-43) protein using visual analyses including visual rating scales (i.e., global cortical atrophy and medial temporal atrophy scales). In addition to the well-known frontotemporal lobar atrophy, structural MRI has revealed multifaceted imaging findings including asymmetric atrophy of the frontoparietal lobe and cerebral peduncle, midbrain atrophy, and localized or diffuse white matter T2 hyperintensity. Understanding of these...
Source: Neuroradiology - September 13, 2019 Category: Radiology Source Type: research

Two novel parameters to evaluate the influence of the age and gender on the anatomic relationship of the atlas and axis in children no more than 8  years old: imaging study
ConclusionThe AAAD was less than 7.12  mm or much than 7.82 mm that suggested a possible instability in the atlantoaxial joint and could help the diagnosis of the atlantoaxial instability in children no more than 8 years old. There was no difference between the mean AAAD of pediatric patients no more than 8 years old in different ag e and gender groups. (Source: Neuroradiology)
Source: Neuroradiology - September 11, 2019 Category: Radiology Source Type: research

Detection of occult abnormalities in the deep gray matter nuclei of neonates with punctate white matter lesions by magnetic resonance spectroscopy
ConclusionsMagnetic resonance spectroscopy is a sensitive method for detecting the occult deep GM abnormalities for the study cohort of neonates with PWML when compared with subjects without PWML. (Source: Neuroradiology)
Source: Neuroradiology - September 11, 2019 Category: Radiology Source Type: research

Clinico-radiological correlation of magnetic resonance imaging findings in patients with idiopathic intracranial hypertension
ConclusionOur study highlights correlations between imaging and clinical findings of IIH. MRI findings in IIH may be useful in ruling out ominous causes of intracranial pressure and risk stratifying ophthalmologic intervention and management of patients with headaches possibly due to IIH. (Source: Neuroradiology)
Source: Neuroradiology - September 10, 2019 Category: Radiology Source Type: research

Fractional anisotropy of the optic radiations correlates with the visual field after epilepsy surgery
ConclusionThe postoperative OR microstructure correlated with visual loss after epilepsy surgery. DTI postoperative OR tractography may be helpful in evaluating VFD. (Source: Neuroradiology)
Source: Neuroradiology - September 7, 2019 Category: Radiology Source Type: research

Diagnostic accuracy of diffusion tensor imaging in differentiating malignant from benign compressed vertebrae
ConclusionDTI is a non-invasive technique providing accurate imaging parameters that can be used for differentiating malignant from benign compressed vertebrae. (Source: Neuroradiology)
Source: Neuroradiology - September 6, 2019 Category: Radiology Source Type: research

European Society of Neuroradiology (ESNR)
(Source: Neuroradiology)
Source: Neuroradiology - September 5, 2019 Category: Radiology Source Type: research

Endovascular treatment of acute intracranial vertebrobasilar artery occlusion: a multicenter retrospective observational study
ConclusionIndividualized endovascular treatment strategy for selected patients with acute VBAO could achieve satisfactory reperfusion rate and favorable prognosis. (Source: Neuroradiology)
Source: Neuroradiology - September 4, 2019 Category: Radiology Source Type: research

A rupture risk analysis of cerebral cavernous malformation associated with developmental venous anomaly using susceptibility-weighted imaging
AbstractPurposeTo search for the risk factors closely related to cerebral cavernous malformation associated with developmental venous anomaly (CCM-DVA) lesions rupture, laying foundations for the development of reasonable individual treatment plans for patients.MethodsIn this retrospective study, we collected CCM-DVA patients who met the inclusion criteria in our outpatient department from 2014 to 2017, MRI scans were performed including susceptibility-weighted imaging (SWI) and contrast-enhanced imaging, characteristics and basic clinical information were collected then statistically analyzed, CCM-DVA lesions were divided...
Source: Neuroradiology - September 3, 2019 Category: Radiology Source Type: research

Deployment of flow diverter devices: prediction of foreshortening and validation of the simulation in 18 clinical cases
ConclusionThe results suggest that the virtual stenting method used in this study is capable of predicting FD length with a clinically sufficient accuracy in advance and could therefore be a helpful tool in intervention planning. Imaging data of high quality are mandatory, while processing and manipulation of the FD during the intervention may impact the accuracy. (Source: Neuroradiology)
Source: Neuroradiology - August 31, 2019 Category: Radiology Source Type: research

Intracranial hemorrhage risk factors after thrombectomy in anterior circulation ischemic stroke
(Source: Neuroradiology)
Source: Neuroradiology - August 30, 2019 Category: Radiology Source Type: research

Endovascular treatment in patients with large vessel occlusion: reduced mortality despite minimal penumbra
AbstractPurposeIn patients with acute ischemic stroke (AIS) caused by large vessel occlusion (LVO), endovascular treatment (EVT) is highly effective for emergency revascularization. However, data on functional outcome are lacking for patients, which show no or minimal mismatch between ischemic core and penumbra.MethodsForty-five patients with AIS due to LVO of the anterior circulation were retrospectively analyzed within 6  h since onset when administered to our department. In all patients, there was no relevant penumbra according to CT perfusion (CTP). Functional outcome, defined by the modified Rankin Scale (mRS) at...
Source: Neuroradiology - August 28, 2019 Category: Radiology Source Type: research

Reorganization of the brain in spinal cord injury: a meta-analysis of functional MRI studies
ConclusionOur results demonstrated that reorganization occurred mainly in the sensorimotor system of the brain after SCI, implying that brain functions involved in sensorimotor demands can still be preserved in this condition. These findings provide opportunities for future studies in terms of therapeutic strategies and prognosis assessment. (Source: Neuroradiology)
Source: Neuroradiology - August 16, 2019 Category: Radiology Source Type: research

Dissociative changes in gray matter volume following electroconvulsive therapy in major depressive disorder: a longitudinal structural magnetic resonance imaging study
ConclusionsThese findings indicate that ECT in patients with MDD is closely associated with dissociative structural changes. The locally enhanced GMV in limbic areas may reflect that the ECT-related brain compensatory mechanisms contribute to brain structure recovery in MDD. (Source: Neuroradiology)
Source: Neuroradiology - August 13, 2019 Category: Radiology Source Type: research

European Society of Neuroradiology (ESNR)
(Source: Neuroradiology)
Source: Neuroradiology - August 10, 2019 Category: Radiology Source Type: research

Convolutional neural network-based segmentation can help in assessing the substantia nigra in neuromelanin MRI
ConclusionU-net segmentation provided relatively high accuracy in the evaluation of the SNpc in NM-MRI and yielded diagnostic performance comparable to that of the established manual method. (Source: Neuroradiology)
Source: Neuroradiology - August 10, 2019 Category: Radiology Source Type: research

Structural and functional reorganization following unilateral internal capsule infarction contribute to neurological function recovery
AbstractPurposeTo investigate proliferative reorganization in the bilateral corticospinal tract (CST) and functional reorganization in the sensorimotor network (SMN) after internal capsule stroke, and to examine the significance of this reorganization.MethodsWe recruited 17 patients with first-onset acute stroke (16 male, 1 female, mean age 52  ± 10 years) and 17 age- and sex-matched healthy controls. We excluded patients aged  65 years and those with lesions outside the unilateral internal capsule. All subjects underwent diffusion tensor imaging and resting-state functional MRI on day...
Source: Neuroradiology - August 10, 2019 Category: Radiology Source Type: research

Standardized image evaluation in patients with idiopathic normal pressure hydrocephalus: consistency and reproducibility
ConclusionCT and MRI are equally good for assessing radiological signs associated with iNPH except for periventricular white matter changes, as MRI has superior soft tissue contrast. The other imaging features can be evaluated consistently, and assessments are reproducible independent of modality. Therefore, the iNPH Radscale is applicable to both CT and MRI and may become an important tool for standardized evaluation in the workup in patients with suspected iNPH. (Source: Neuroradiology)
Source: Neuroradiology - August 10, 2019 Category: Radiology Source Type: research

Plenty of calcification: imaging characterization of polymorphous low-grade neuroepithelial tumor of the young
ConclusionPLNTYs demonstrate characteristic calcification, subcortical location, and frequent temporal lobe localization, features that may allow radiologists to prospectively suggest the diagnosis in the proper clinical setting. (Source: Neuroradiology)
Source: Neuroradiology - August 9, 2019 Category: Radiology Source Type: research

Intradural radicular arteriovenous fistula that mimics dural arteriovenous fistula: report of three cases
AbstractWe herein present three cases of a rare type of spinal AVF, an intradural radicular AVF, which mimicked a dural AVF. A 65-year-old male presented with congestive myelopathy. On angiography, right vertebral angiogram (VAG) showed a suspected dural AVF; however, left VAG showed the same intradural dilated vein fed by the anterior spinal artery (ASA). Intraoperative and histological results suggested that a single AVF was located on the right C1 nerve root fed by the right C1 radicular artery and branch of the anterior spinal artery. Two additional patients with a radicular AVF at the C3 or C5 level were presented. In...
Source: Neuroradiology - August 8, 2019 Category: Radiology Source Type: research

MRI detection of cerebral microbleeds: size matters
AbstractPurposeCerebral microbleeds (CMB) play an important role as an imaging biomarker notably in vascular and neurodegenerative diseases. Current clinical brain MRI underestimates the number of CMB with respect to histopathology. It is expected that small CMBs are more likely to be false-negatives, yet this has not been demonstrated and the average size of false-negative and true-positive CMBs have not been established.MethodsThe radiologic-histopathologic correlation study was approved by the local review board and included 42 consecutive cases (mean age at death, 80.7  ± 10.0 years; 23 female...
Source: Neuroradiology - August 8, 2019 Category: Radiology Source Type: research

Esnr 2019
(Source: Neuroradiology)
Source: Neuroradiology - August 7, 2019 Category: Radiology Source Type: research

Reliability of dynamic contrast-enhanced magnetic resonance imaging data in primary brain tumours: a comparison of Tofts and shutter speed models
AbstractPurposeThe purpose of this study is to investigate the robustness of pharmacokinetic modelling of DCE-MRI brain tumour data and to ascertain reliable perfusion parameters through a model selection process and a stability test.MethodsDCE-MRI data of 14 patients with primary brain tumours were analysed using the Tofts model (TM), the extended Tofts model (ETM), the shutter speed model (SSM) and the extended shutter speed model (ESSM). A no-effect model (NEM) was implemented to assess overfitting of data by the other models. For each lesion, the Akaike Information Criteria (AIC) was used to build a 3D model selection ...
Source: Neuroradiology - August 7, 2019 Category: Radiology Source Type: research

Why is middle cerebral artery plaque augmented by contrast media? A phantom study using middle cerebral artery  stenotic silicon model
ConclusionThe silicone stenotic MCA model was characterized by luminal enhancement through contrast stagnation. The findings of the CE of the MCA plaque may be partially associated with stagnation of the contrast media. (Source: Neuroradiology)
Source: Neuroradiology - August 7, 2019 Category: Radiology Source Type: research

Evaluation of a high-signal lesion posterior to the intracranial vertebral artery using 3D balanced fast-field echo imaging
AbstractPrevious reports have identified a small, benign, high-signal lesion (HSL) posterior to the intracranial vertebral artery and associated with the ipsilateral spinal accessory nerve (SAN) using 3D fluid-attenuated inversion recovery (3D FLAIR) imaging as an emerging new entity. To elucidate the relationship between HSLs and SAN, 76 patients with 86 HSLs were evaluated using 3D FLAIR and 3D balanced fast-field echo (3D bFFE imaging). All HSLs showed contact with ipsilateral SAN on both the sequences. 3D bFFE imaging clearly distinguished between the two structures unlike 3D FLAIR. Moreover, SAN was surrounded by HSLs...
Source: Neuroradiology - August 6, 2019 Category: Radiology Source Type: research

Prediction of high proliferative index in pituitary macroadenomas using MRI-based radiomics and machine learning
ConclusionsMachine learning analysis of texture-derived parameters from preoperative T2 MRI has proven to be effective for the prediction of pituitary macroadenomas ki-67 proliferation index class. This might aid the surgical strategy making a more accurate preoperative lesion classification and allow for a more focused and cost-effective follow-up and long-term management. (Source: Neuroradiology)
Source: Neuroradiology - August 2, 2019 Category: Radiology Source Type: research

The so-called “bovine aortic arch”: a possible biomarker for embolic strokes?
ConclusionThe bovine aortic arch, particularly the bovine arch subtype B, was significantly more common among embolic stroke patients. This might be due to altered hemodynamic properties within the bovine arch. (Source: Neuroradiology)
Source: Neuroradiology - August 1, 2019 Category: Radiology Source Type: research

Diagnostic performance of the nerve root sedimentation sign in lumbar spinal stenosis: a systematic review and meta-analysis
ConclusionNRSS has high diagnostic sensitivity, specificity, and efficacy, and good clinical application value for the diagnosis of LSS. It can be recommended as an auxiliary tool for diagnosis and screening in clinical practice. (Source: Neuroradiology)
Source: Neuroradiology - July 30, 2019 Category: Radiology Source Type: research

Angioplasty and/or stenting after thrombectomy in patients with underlying intracranial atherosclerotic stenosis
ConclusionEmergent angioplasty and/or stenting is possible in patients of ELVO with ICAS and may reduce the risk of reocclusion and early neurologic deterioration with no increased risk of intracranial hemorrhage and death than those received neither. (Source: Neuroradiology)
Source: Neuroradiology - July 29, 2019 Category: Radiology Source Type: research

Dural venous sinus stenting as a stand-alone treatment for spontaneous skull base CSF leak secondary to venous pseudotumor cerebri syndrome
We describe a 72-year-old woman with rhinorrhea, aural fullness, and posterior nasal drip. CT and MRI showed signs of CSF hypovolemia and PTCS, as well as bilateral transverse sinus stenoses. CT and MRI cisternography documented CSF leaks through the right cribriform plate and the posterior aspect of the petrous bone. Opening CSF pressure was 6  cm H2O. Dural venous sinus stenting (DVSS) was performed after failed conservative treatment. Rhinorrhea resolved 3  days after stenting, aural fullness 1 month later. After 6 months, signs of CSF hypovolemia had disappeared on MRI and the stents were patent. Af...
Source: Neuroradiology - July 27, 2019 Category: Radiology Source Type: research

Intra-arterial chemotherapy for retinoblastoma: the dosimetric impact
ConclusionThis paper describes a method of absorbed dose estimation providing ranges used clinically in a single practice and the basis for further prospective studies. (Source: Neuroradiology)
Source: Neuroradiology - July 22, 2019 Category: Radiology Source Type: research

Radiomics approach for prediction of recurrence in skull base meningiomas
ConclusionsThe results show that the radiomics approach in preoperative MRI offer objective and valuable clinical information for treatment planning in SBM. (Source: Neuroradiology)
Source: Neuroradiology - July 19, 2019 Category: Radiology Source Type: research

Imaging of temporal bone inflammations in children: a pictorial review
ConclusionPaediatric temporal bone inflammatory processes are common and can have severe clinical sequelae. Timely intervention, facilitated by correct radiological diagnosis, can often prevent progression of disease, loss of hearing and systemic illness. (Source: Neuroradiology)
Source: Neuroradiology - July 18, 2019 Category: Radiology Source Type: research

European Society of Neuroradiology (ESNR)
(Source: Neuroradiology)
Source: Neuroradiology - July 11, 2019 Category: Radiology Source Type: research

Identifying patients with neuronal intranuclear inclusion disease in Singapore using characteristic diffusion-weighted MR images
ConclusionPreviously undiagnosed patients with NIID can be identified by searching for abnormalities at the junction between gray and white matter on DWI in PACS and subsequently confirmed by skin biopsy. Radiologists should recognize the distinctive neuroimaging pattern of this dementing disease. (Source: Neuroradiology)
Source: Neuroradiology - July 11, 2019 Category: Radiology Source Type: research

Correction to: Percutaneous ozone nucleolysis for lumbar disc herniation
The published version of this article unfortunately contained a mistake. Affiliation 2 was presented incorrectly in the original article. The updated affiliation is Neuroradiology Unit, Bellaria Hospital, IRCCS Institute of Neurological Sciences, Bologna, Italy. (Source: Neuroradiology)
Source: Neuroradiology - July 11, 2019 Category: Radiology Source Type: research

Diagnostic imaging in the management of patients with possible cerebral venous thrombosis: a cost-effectiveness analysis
ConclusionIn patients at the peak age of CVT incidence yet low clinical pre-test probability, diagnostic imaging with CTV is the most cost-effective strategy. (Source: Neuroradiology)
Source: Neuroradiology - July 10, 2019 Category: Radiology Source Type: research

Radiomics in peritumoral non-enhancing regions: fractional anisotropy and cerebral blood volume improve prediction of local progression and overall survival in patients with glioblastoma
ConclusionRadiomics features using FA and CBV in the NER have the potential to improve prediction of local progression and overall survival in patients with glioblastoma. (Source: Neuroradiology)
Source: Neuroradiology - July 9, 2019 Category: Radiology Source Type: research

Aberrant myelination in patients with Sturge-Weber syndrome analyzed using synthetic quantitative magnetic resonance imaging
AbstractPurposeAccelerated myelination in the affected hemisphere has been demonstrated previously in patients with Sturge-Weber syndrome (SWS). This prospective study investigated myelin-related changes in patients with unilateral SWS using synthetic quantitative magnetic resonance imaging (qMRI).MethodsFourteen children with unilateral SWS were categorized according to age, i.e., ≤ 2 years (group A,n = 5, mean age 1.1 years, 3 males) and>  2 years (group B,n = 9, mean age 3.9 years, 4 males). All children underwent two-dimensional synthetic qMRI. The mye...
Source: Neuroradiology - July 6, 2019 Category: Radiology Source Type: research

Potential usefulness of signal intensity of cerebral gyri on quantitative susceptibility mapping for discriminating corticobasal degeneration from progressive supranuclear palsy and Parkinson ’s disease
ConclusionsThe CG findings on QSM images may be more useful than those on conventional MRI for discriminating CBD from PD on an individual basis. Based on postmortem pathological data, cortical QSM hyperintensity might be an expression of ferritin-positive microglia. (Source: Neuroradiology)
Source: Neuroradiology - July 2, 2019 Category: Radiology Source Type: research

Microstructural characterization of corticospinal tract in subacute and chronic stroke patients with distal lesions by means of advanced diffusion MRI
ConclusionsThis study shows that advanced dMRI approaches can help elucidate the underpinning architectural modifications occurring in the CST after stroke. Further follow-up studies on bigger cohorts are needed to evaluate if DKI- and NODDI-derived parameters might be proposed as complementary biomarkers of brain microstructural alterations. (Source: Neuroradiology)
Source: Neuroradiology - July 1, 2019 Category: Radiology Source Type: research

Characteristic asymmetric limbic and anterior temporal atrophy in demented patients with pathologically confirmed argyrophilic grain disease
ConclusionsAsymmetric atrophy relatively localized to the anterior temporal and limbic lobes including the amygdala and ambient gyrus is a characteristic MRI finding of AGD. For the precise antemortem diagnosis, especially to differentiation from AD, it is important to pay attention to this asymmetric change. (Source: Neuroradiology)
Source: Neuroradiology - June 29, 2019 Category: Radiology Source Type: research

Subacute vessel wall imaging at 7-T MRI in post-thrombectomy stroke patients
ConclusionVessel wall imaging with prospective motion correction can be performed in patients following thrombectomy with excellent imaging quality at 7  T. We show that vessel wall contrast enhancement is the normal post-operative state and corresponds to the deployment location of the stent retriever. (Source: Neuroradiology)
Source: Neuroradiology - June 25, 2019 Category: Radiology Source Type: research

Brain functional organization and structure in patients with arteriovenous malformations
ConclusionsThese results contribute to the discussion that AVMs affect whole brain networks and not simply the area surrounding the lesion. (Source: Neuroradiology)
Source: Neuroradiology - June 20, 2019 Category: Radiology Source Type: research

Radiogenomic analysis of PTEN mutation in glioblastoma using preoperative multi-parametric magnetic resonance imaging
ConclusionThese results show that radiomic features derived from preoperative MRI can predictPTEN mutation status in glioblastoma patients, thus providing a novel noninvasive imaging biomarker. (Source: Neuroradiology)
Source: Neuroradiology - June 19, 2019 Category: Radiology Source Type: research