Atherosclerotic ICA stenosis coinciding with ICA asymmetry associated with Circle of Willis variations can mimic near-occlusion.

Abstract:

:Differentiating carotid near-occlusion (tight atherosclerotic stenosis causing distal artery size reduction) from conventional stenosis is the first step when grading carotid stenoses with NASCET method. The internal carotid artery (ICA) can be asymmetrically associated with Circle of Willis variations. When such ICA asymmetry coincides with stenosis, it may mimic near-occlusion. We studied ICA anatomical variant prevalence in 4042 consecutive CTA exams from all indications, 53 excluded due to carotid occlusion, 814 with any ≥ 50% steno-occlusive disease intra- or extracranially, 3228 without. Of the 3989 included cases, 568 (14%) had ICA asymmetry, of which 335 (59%) were from associated with Circle of Willis variations. Of 3228 patients without ≥ 50% stenosis or other steno-occlusive disease intra- and extracranially; 257 (8.0%) demonstrated ICA asymmetry associated with Circle of Willis variations, equally common among sexes and age unrelated and most frequently attributed to an ipsilateral A1 hypoplasia/aplasia, less often attributed to large contralateral posterior communicating artery. As ICA asymmetry associated with Circle of Willis variations are common, caution should be exercised diagnosing near-occlusion on asymmetry alone.

journal_name

Neuroradiology

journal_title

Neuroradiology

authors

Johansson E,Aviv RI,Fox AJ

doi

10.1007/s00234-019-02309-7

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

101-104

issue

1

eissn

0028-3940

issn

1432-1920

pii

10.1007/s00234-019-02309-7

journal_volume

62

pub_type

杂志文章
  • Semi-automated measurement of vascular tortuosity and its implications for mechanical thrombectomy performance.

    abstract:PURPOSE:Few studies have examined the geometry of endovascular mechanical thrombectomy pathways. Here we examine the tortuosity and angulations of catheter pathways from the aortic arch to the termination of the internal carotid artery (ICA) and its association with thrombectomy performance. METHODS:We included 100 co...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-020-02525-6

    authors: Mokin M,Waqas M,Chin F,Rai H,Senko J,Sparks A,Ducharme RW,Springer M,Borlongan CV,Levy EI,Ionita C,Siddiqui AH

    更新日期:2020-08-20 00:00:00

  • Micro-structural white matter abnormalities in type 2 diabetic patients: a DTI study using TBSS analysis.

    abstract:INTRODUCTION:Patients with type 2 diabetes mellitus (T2DM) have usually been found cognitive impairment associated with brain white matter (WM) abnormalities. However, findings have varied across studies, and any potential relationship with Alzheimer's disease (AD) remains unclear. The aim of this study was to assess t...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-016-1752-4

    authors: Tan X,Fang P,An J,Lin H,Liang Y,Shen W,Leng X,Zhang C,Zheng Y,Qiu S

    更新日期:2016-12-01 00:00:00

  • Primary leiomyosarcoma of the spine.

    abstract::We present a 39-year-old man with tumour of the eighth thoracic vertebra, causing compression of the spinal cord. The tumour proved to be a primary leiomyosarcoma (LMS) of bone, an uncommon neoplasm; to our knowledge this is the first report of primary LMS in the spine. The lesion was documented by plain radiography, ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00600095

    authors: Lo TH,van Rooij WJ,Teepen JL,Verhagen IT

    更新日期:1995-08-01 00:00:00

  • MR spectroscopy in the evaluation of recurrent contrast-enhancing lesions in the posterior fossa after tumor treatment.

    abstract::Recurrent contrast-enhancing lesions arising within foci of prior brain neoplasms treated with chemotherapy and/or radiation therapy pose a significant diagnostic dilemma, as they may represent recurrent or residual tumor, treatment-related changes, or a combination of both. Those lesions specifically in the posterior...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-004-1195-1

    authors: Weybright P,Maly P,Gomez-Hassan D,Blaesing C,Sundgren PC

    更新日期:2004-07-01 00:00:00

  • Radiological and histological findings in spinal intramedullary angiolipoma.

    abstract::We report an intramedullary angiolipoma with spinal cord compression studied by MRI, angiography and CT. Angiolipomas of the spine are rare benign tumours containing vascular and mature adipose elements. They are epidural in more than 90 % of the cases; only three cases of intramedullary angiolipoma are described. The...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050811

    authors: Klisch J,Spreer J,Bloss HG,Baborie A,Hubbe U

    更新日期:1999-08-01 00:00:00

  • Assessment of changes in cerebral circulation time due to vasospasm in a specific arterial territory: effect of angioplasty.

    abstract::This study demonstrates that in experienced hands, intracranial angioplasty is a feasible and safe option in a selected group of patients with severe (>50% stenosis) symptomatic vasospasm following subarachnoid hemorrhage. Cerebral circulation time is a surrogate parameter closely linked to cerebral perfusion. The stu...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-004-1281-4

    authors: Turowski B,du Mesnil de Rochemont R,Beck J,Berkefeld J,Zanella FE

    更新日期:2005-02-01 00:00:00

  • Reconstructive treatment of dural arteriovenous fistulas of the transverse and sigmoid sinus: transvenous angioplasty and stent deployment.

    abstract::Various techniques for the endovascular treatment of dural arteriovenous fistulas (dAVFs) of the transverse and sigmoid sinus have recently evolved. Transvenous coil occlusion of the involved segment and transarterial embolization of the feeding arteries with liquid agents are the commonest treatments utilized. Howeve...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-005-1377-5

    authors: Liebig T,Henkes H,Brew S,Miloslavski E,Kirsch M,Kühne D

    更新日期:2005-07-01 00:00:00

  • Conservative management of extra-axial hematomas diagnosed by CT.

    abstract::Our purpose was to assess the role of serial CT in recently traumatized patients with clinically stable extra-axial intracranial hematomas (EACH) and a midline shift of less than 0.5 cm. A retrospective review of 91 imaging studies in 41 patients (with 45 EACH) was done to assess the time between trauma and CT; the pr...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050859

    authors: Muszynski CA,Hayman LA,Weingarten K,Prow HW,Cole JW,Contant CF

    更新日期:1999-12-01 00:00:00

  • Is viscosity important in the production of blood-brain barrier disruption by intracarotid contrast media?

    abstract::A canine model was used to investigate the effects of intracarotid methylglucamine iothalamate (280 mgI/ml) at different viscosities on the normal blood-brain barrier. To alter viscosity, without changing physiochemical parameters, injections were made at either 23 degrees C or 37 degrees C. The degree of blood-brain ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00342690

    authors: Wilcox J,Sage MR

    更新日期:1984-01-01 00:00:00

  • Olivary degeneration after intracranial haemorrhage or trauma: follow-up MRI.

    abstract::We studied serial MRI appearances of transneuronal degeneration in the inferior olives, retrospectively analysing follow-up images of five patients, three with head injury and two with brain stem haemorrhage. We performed 13 MRI studies 4 days to 2 years 7 months after the accident. All but one of the patients exhibit...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050695

    authors: Suzuki M,Takashima T,Ueda F,Fujinaga Y,Horichi Y,Yamashita J

    更新日期:1999-01-01 00:00:00

  • Lower fractional anisotropy at the anterior body of the normal-appearing corpus callosum in multiple sclerosis versus symptomatic carotid occlusion.

    abstract:INTRODUCTION:Not uncommonly, differentiating multiple sclerosis (MS) from ischemic cerebral vascular disease is difficult based on conventional magnetic resonance imaging (MRI). We aim to determine whether preferential occult injury in the normal-appearing corpus callosum (NACC) is more severe in patients with MS than ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-009-0535-6

    authors: Lou X,Jiang W,Ma L,Ma N,Cai Y,Huang D,Wong EH

    更新日期:2009-09-01 00:00:00

  • Morphology of cerebral lesions in children with congenital hemiplegia. A study with computed tomography.

    abstract::This study has analysed the results of CT scans of the brains in children with congenital hemiplegia. The material consists of 111 out of a total of 151 children with this cerebral palsy syndrome in a population-based series. We have classified the morphological findings in five groups. The groups are designed to refl...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00589107

    authors: Wiklund LM,Uvebrant P,Flodmark O

    更新日期:1990-01-01 00:00:00

  • Fast FLAIR of the brain: the range of appearances in normal subjects and its application to quantification of white-matter disease.

    abstract::Axial fast FLAIR images of the brains of 40 normal volunteers in four age groups between 16 and 55 years were examined and the number and size of areas of increased white-matter signal recorded. Increased signal in the corticospinal tract region was seen at the level of the internal capsule in all subjects, extending ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050402

    authors: Gawne-Cain ML,Silver NC,Moseley IF,Miller DH

    更新日期:1997-04-01 00:00:00

  • Catheter embolization of intracranial arteriovenous malformations as an aid to surgical excision.

    abstract::Eleven cases of large arteriovenous malformations (AVMs) were treated from February 1974 to March 1975 by embolization via the internal carotid artery with beads, and 8 of them had subsequent surgery. There was one post-operative death. A second embolization was performed in 3 patients with further diminution of vascu...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00338550

    authors: Wolpert SM,Stein BM

    更新日期:1975-11-21 00:00:00

  • Childhood neuroborreliosis: clinicoradiological correlation.

    abstract::We report the cranial CT and MRI findings in three children with Lyme disease (neuroborreliosis). The neuroimaging findings in children have been rarely reported. We found cranial MRI far superior to cranial CT. Ring-enhancing lesions have been described in acute disseminating encephalomyelitis and multiple sclerosis ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00593726

    authors: Demaerel P,Wilms G,Casteels K,Casaer P,Silberstein J,Baert AL

    更新日期:1995-10-01 00:00:00

  • CT iopamidol cisternographic diagnosis of coexisting partial empty sella and pituitary adenoma. Report of two cases.

    abstract::In the last 3 years 86 patients were referred for suspected primary intrasellar pathology. Two of them had coexisting pituitary adenoma and partial empty sella. This situation has been diagnosed pre-operatively thanks to CT Iopamidol cisternography. The pre-operative diagnosis of this common anatomic condition allows ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00341049

    authors: Pompili A,Iachetti M,Bianchini AL,Crecco M,Giannini P,Mastrostefano R

    更新日期:1987-01-01 00:00:00

  • Intravenous flat-detector CT angiography in acute ischemic stroke management.

    abstract:INTRODUCTION:In the settings of stroke, a non-invasive high-resolution imaging modality to visualize the arterial intracranial circulation in the interventional lab is a helpful mean to plan the endovascular recanalization procedure. We report our initial experience with intravenously enhanced flat-detector CT (IV FDCT...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-011-0893-8

    authors: Blanc R,Pistocchi S,Babic D,Bartolini B,Obadia M,Alamowitch S,Piotin M

    更新日期:2012-04-01 00:00:00

  • MR signal of the solid portion of pilocytic astrocytoma on T2-weighted images: is it useful for differentiation from medulloblastoma?

    abstract:BACKGROUND AND PURPOSE:Although imaging features of cerebellar pilocytic astrocytoma and medulloblastoma have been described in many texts, original comparisons of magnetic resonance intensity between these two tumours are limited. In the present study the results of magnetic resonance imaging (MRI) were reviewed, focu...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-006-0048-5

    authors: Arai K,Sato N,Aoki J,Yagi A,Taketomi-Takahashi A,Morita H,Koyama Y,Oba H,Ishiuchi S,Saito N,Endo K

    更新日期:2006-04-01 00:00:00

  • Relationships between portions of the third and fourth ventricles. An aid to stereotactic accuracy for posterior fossa stereotaxy.

    abstract::The relationships between the third and fourth ventricles have been studied by examination of the angles formed by third and fourth ventricular projections. These have been subjected to statistical analysis and have proved useful for posterior fossa stereotactic surgery. ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00327527

    authors: Hitchcock E,Oppitz P,Donaldson AA

    更新日期:1978-08-18 00:00:00

  • Normal diffusion-weighted imaging in cerebral air embolism complicating angiography.

    abstract::We report a case of cerebral air embolism resulting from accidental air infection during cerebral angiography. A 60-year-old man was accidentally injected with air via the left subclavian artery. Angiography demonstrated air within the basilar artery. The patient showed signs of posterior circulation ischaemia (confus...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050043

    authors: Sayama T,Mitani M,Inamura T,Yagi H,Fukui M

    更新日期:2000-03-01 00:00:00

  • Positive arthrography of the craniocervical joints.

    abstract::The configuration of the articular cavities of the cervico-occipital region have been demonstrated by an experimental technic of positive contrast arthrography in postmortem specimens. ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00340020

    authors: Dirheimer Y,Ramsheyi A,Reolon M

    更新日期:1977-05-28 00:00:00

  • Autologous mesenchymal stem cell endografting in experimental cerebrovascular aneurysms.

    abstract:INTRODUCTION:Coiling is the gold standard for the treatment of intracranial aneurysms. However, some issues associated with endovascular treatment limit its long-term efficiency. Recanalization with coil compaction is certainly the most important. New approaches may be considered to promote thrombus colonization by mes...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-013-1167-4

    authors: Rouchaud A,Journé C,Louedec L,Ollivier V,Derkaoui M,Michel JB,Mazighi M

    更新日期:2013-06-01 00:00:00

  • Peripheral cerebral aneurysm associated with a glioma.

    abstract::This 42-year-old man with acute subarachnoid, intraventricular and parenchymal hemorrhage from an angiographically and surgically confirmed successfully clipped, right splenial artery aneurysm, subsequently manifested a grade 3 astrocytoma at the site of the aneurysm. Intracranial aneurysms are recognized in associati...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00588429

    authors: Barker CS

    更新日期:1992-01-01 00:00:00

  • T2 relaxometry of brain in myotonic dystrophy.

    abstract::We investigated the nature and extent of brain involvement in myotonic dystrophy (DM), examining possible T2 relaxation abnormalities in the brain of 20 patients with adult-onset DM and 20 sex- and age-matched normal controls. Brain MRI was performed at 0.5 T, and T2 values were calculated from signal intensity in two...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340000459

    authors: Di Costanzo A,Di Salle F,Santoro L,Bonavita V,Tedeschi G

    更新日期:2001-03-01 00:00:00

  • Vascular contrast enhancement in Lhermitte-Duclos disease: case report.

    abstract::We report a patient with surgically proven Lhermitte-Duclos disease. The radiologic and pathologic features of this cerebellar lesion are reviewed, including the newly reported presence of vascular contrast enhancement within the mass. ...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/BF00593715

    authors: Ortiz O,Bloomfield S,Schochet S

    更新日期:1995-10-01 00:00:00

  • Absence of the supraclinoid internal carotid artery in association with intracranial aneurysms.

    abstract::We report a case of absence of the supraclinoid segment of the left internal carotid artery associated with hypoplasia of the ipsilateral internal carotid artery and anterior communicating artery aneurysm formation. We discuss the embryology probably responsible for this anatomical variant and show the imaging finding...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050529

    authors: Czarnecki EJ,Silbergleit R,Mehta BA,Sanders WP

    更新日期:1998-01-01 00:00:00

  • Enhanced catheter propagation with hypercapnia during superselective cerebral catherisation.

    abstract::During arterial catherisation of a cerebral arteriovenous malformation it may be difficult or impossible to access the nidus of the malformation through its small, tortuous feeding vessels due to microcatheter impaction. Carbon dioxide, a most potent cerebral vasodilator, was temporarily added to the inspired gases of...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s002340050626

    authors: Djurberg HG,Tjan GT,Al Moutaery KR

    更新日期:1998-07-01 00:00:00

  • Impact of metal artifact reduction software on image quality of gemstone spectral imaging dual-energy cerebral CT angiography after intracranial aneurysm clipping.

    abstract:PURPOSE:We aimed to assess the impact of metal artifact reduction software (MARs) on image quality of gemstone spectral imaging (GSI) dual-energy (DE) cerebral CT angiography (CTA) after intracranial aneurysm clipping. METHODS:This retrospective study was approved by the institutional review board, which waived patien...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-017-1871-6

    authors: Dunet V,Bernasconi M,Hajdu SD,Meuli RA,Daniel RT,Zerlauth JB

    更新日期:2017-09-01 00:00:00

  • Microstructural brain abnormalities correlate with neurocognitive dysfunction in minimal hepatic encephalopathy: a diffusion kurtosis imaging study.

    abstract:PURPOSE:To investigate the diffusion kurtosis imaging (DKI) in early minimal hepatic encephalopathy (MHE) diagnosis and evaluate the correlations between changes in DKI metrics and cognitive performance. METHODS:We enrolled 116 cirrhosis patients, divided into non-HE (n = 61) and MHE (n = 55), and 46 normal controls (...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-019-02201-4

    authors: Li JL,Jiang H,Zhang XD,Huang LX,Xie SS,Zhang L,Cheng Y,Shen W

    更新日期:2019-06-01 00:00:00

  • CT reconstruction and MRI fusion of 3D rotational angiography in the evaluation of pediatric cerebrovascular lesions.

    abstract:PURPOSE:Complex neurovascular lesions in children require precise anatomic understanding for treatment planning. Although 3DRA is commonly employed for volumetric reformation in neurointerventional procedures, the ability to reconstruct this data into CT-like images (3DRA-CT) is not widely utilized. This study demonstr...

    journal_title:Neuroradiology

    pub_type: 杂志文章

    doi:10.1007/s00234-017-1818-y

    authors: Muthusami P,Shkumat N,Rea V,Chiu AH,Shroff M

    更新日期:2017-06-01 00:00:00