Abstract:
INTRODUCTION:Diffusion-weighted imaging (DWI) produces contrast among different kinds of tissues according to their diffusibility characteristics. The purpose of our study was to evaluate the role of DWI including measurement of apparent diffusion coefficient (ADC) values in recognizing benignancy or malignancy of orbital masses. METHODS:A total of 39 orbital masses were evaluated visually for signal characteristics on DWI and ADC maps. ADC values were calculated for each lesion. Visual signal characteristics were compared using the Fisher exact test. Receiver operating characteristic (ROC) analysis was carried out to determine sensitivity and specificity for distinguishing malignant from benign lesions using ADC values. The Mann-Whitney U test was applied to compare the ADC values between orbital lymphomas and idiopathic orbital inflammatory (IOI) lesions, and between optic nerve sheath meningiomas and gliomas. RESULTS:Visual assessment revealed no significant difference between benign and malignant lesions on DWI (p-value = 0.66). However, visual assessment of ADC maps revealed a statistically significant (p-value ≤ 0.0001) between benign and malignant lesions. ROC analysis showed a sensitivity of 83.33 % and a specificity of 85.71 % when using an optimal cut off ADC value of 0.84 × 10(-3) mm(2)/s for differentiating malignant from benign lesions. Significant differences in mean ADC values were observed between lymphomas and IOI lesions (p-value = 0.05), and between optic nerve sheath meningiomas and gliomas (p-value = 0.03). CONCLUSION:DWI is useful for differentiating malignant and benign orbital tumors if accompanied by visual assessment of ADC maps and ADC value calculations.
journal_name
Clin Neuroradioljournal_title
Clinical neuroradiologyauthors
Fatima Z,Ichikawa T,Ishigame K,Motosugi U,Waqar AB,Hori M,Iijima H,Araki Tdoi
10.1007/s00062-013-0234-xsubject
Has Abstractpub_date
2014-06-01 00:00:00pages
129-34issue
2eissn
1869-1439issn
1869-1447journal_volume
24pub_type
杂志文章abstract:PURPOSE:The aim of this study was to compare vertebral failure loads, predicted from finite element (FE) analysis of patients with and without osteoporotic vertebral fractures (OVF) at virtually reduced dose levels, compared to standard-dose exposure from multidetector computed tomography (MDCT) imaging and evaluate wh...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-018-0722-0
更新日期:2019-12-01 00:00:00
abstract:PURPOSE:Primary spinal extradural Ewing's sarcoma (PSEES) or primitive neuroectodermal tumor (PNET) is uncommon. The present study summarizes the magnetic resonance (MR) imaging appearance of PSEES. METHODS:Literature search from 1994 to 2012 with our representative case presentation. RESULTS:Twenty-one patients, 12 ...
journal_title:Clinical neuroradiology
pub_type: 杂志文章,评审
doi:10.1007/s00062-013-0222-1
更新日期:2013-06-01 00:00:00
abstract:PURPOSE:The aim of this study was to analyze sex differences in outcome after thrombectomy for acute ischemic stroke in clinical practice in a large prospective multicenter registry. METHODS:Data of consecutive stroke patients treated with thrombectomy (June 2015-April 2018) derived from an industry-independent regist...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-020-00983-2
更新日期:2020-12-21 00:00:00
abstract:BACKGROUND AND PURPOSE:Mechanical thrombectomy is an effective recanalization technique in acute ischemic stroke patients with large vessel occlusions; however, it is unclear to what extent stent retriever thrombectomy may be applicable to occlusions of smaller peripheral cerebral vessels. The outcome of patients with ...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-018-0739-4
更新日期:2020-03-01 00:00:00
abstract:PURPOSE:To review the fundamental principles of susceptibility-weighted imaging (SWI) and quantitative susceptibility mapping (QSM), and to discuss recent clinical developments. METHODS:SWI is a magnetic resonance imaging method that takes advantage of magnitude signal loss and phase information to reveal anatomic and...
journal_title:Clinical neuroradiology
pub_type: 杂志文章,评审
doi:10.1007/s00062-015-0432-9
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The estimates on the risk of rupture of intracranial aneurysms remain a controversial topic. Circumferential aneurysmal wall enhancement (CAWE) on vessel wall magnetic resonance imaging (MRI) has been described in unstable aneurysms. Sentinel headaches and third nerve palsy are possible symptoms ...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-017-0598-4
更新日期:2018-12-01 00:00:00
abstract:PURPOSE:Angiographic assessment of carotid cavernous fistulas (CCFs) can be complex. Our purpose was to examine whether the use of parametric color coding in the postprocessing of DSA series is advantageous in the evaluation of CCFs. METHODS:We enrolled 16 patients with angiographically proven CCFs. Endovascular treat...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-012-0184-8
更新日期:2013-06-01 00:00:00
abstract:PURPOSE:Acute basilar artery occlusion is associated with high rates of major morbidity and mortality. In rare cases, the underlying pathology is a high-grade stenosis of the basilar artery. We report on a series of seven cases with occluded high-grade basilar artery stenosis who received endovascular therapy at our ce...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-014-0303-9
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Extracranial internal carotid artery (ICA) dissection is an important cause of ischemic stroke in younger adults. The optimal medical and surgical strategies for managing these lesions have not been well established. We report a case series of extracranial ICA reconstruction using overlapping flo...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-018-0707-z
更新日期:2019-12-01 00:00:00
abstract:PURPOSE:Internal jugular vein (IJV) narrowing superiorly is likely relatively frequent. IJV narrowing has been proposed as a potential pathophysiologic component for multiple sclerosis (MS). Our purpose was to investigate the prevalence of incidental superior IJV narrowing in patients imaged with neck computed tomograp...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-013-0232-z
更新日期:2014-06-01 00:00:00
abstract:PURPOSE:The aim of this study was to compare a recently established whole brain MR spectroscopic imaging (wbMRSI) technique using spin-echo planar spectroscopic imaging (EPSI) acquisition and the Metabolic Imaging and Data Analysis System (MIDAS) software package with single voxel spectroscopy (SVS) technique and LCMod...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-018-00757-x
更新日期:2020-06-01 00:00:00
abstract:PURPOSE:Visualization of the abducens nerve in its petroclival segment still remains challenging. We aimed to investigate the detectability of the petroclival segment of the abducens nerve and to evaluate the role of the size of the petroclival venous confluence (PVC) in the visibility of the nerve using contrast-enhan...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-015-0415-x
更新日期:2017-03-01 00:00:00
abstract:PURPOSE:Computed tomography (CT) accounts for more than half of the total radiation exposure from medical procedures, which makes dose reduction in CT an effective means of reducing radiation exposure. We analysed the dose reduction that can be achieved with a new CT scanner [Somatom Edge (E)] that incorporates new dev...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-013-0263-5
更新日期:2014-03-01 00:00:00
abstract:PURPOSE:Stroke is a rising cause of mortality in human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) populations. The etiology of stroke remains at the core of the decision-making process to treat and prevent recurrent events. In this population HIV vasculopathy (HIV-V) and varicella zoster...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-011-0087-0
更新日期:2011-09-01 00:00:00
abstract:PURPOSE:Isolated posterior inferior cerebellar artery dissecting aneurysms are rare lesions. Their underlying pathology, presentation, and natural history are poorly understood. Their treatment is controversial, and few data are available regarding the best treatment. We conducted the first study comparing selective co...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-013-0247-5
更新日期:2014-09-01 00:00:00
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journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-010-0039-0
更新日期:2011-04-01 00:00:00
abstract:PURPOSE:Against the background of the increasing dilemma in the scientific community regarding protected versus unprotected carotid artery stent (CAS) placement and the disputed points in interpreting the results of scientific studies as well as the difficulty in conducting such randomized controlled studies, this arti...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-011-0057-6
更新日期:2011-06-01 00:00:00
abstract::The value of magnetic resonance (MR) imaging for the clinical management of brain tumour patients has greatly increased in recent years through the introduction of functional MR sequences. Previously, MR imaging for brain tumours relied for the most part on contrast-enhanced T1-weighted MR sequences but today with the...
journal_title:Clinical neuroradiology
pub_type: 杂志文章,评审
doi:10.1007/s00062-015-0439-2
更新日期:2015-10-01 00:00:00
abstract:PURPOSE:Tethered cord syndrome (TCS) is a clinical entity in which symptoms are induced through excessive tension on the spinal cord. The radiological method of choice to confirm TCS is magnetic resonance imaging (MRI), however limitations exist especially in patients with no underlying spinal dysraphism. MATERIALS AN...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-010-0049-y
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND:Distal embolization or movement of the thrombus to previously uninvolved vasculature are feared complications during stroke thrombectomy. We looked at associated factors in a consecutive series of patients who underwent thrombectomy with the same endovascular device. METHODS:We included all patients with ac...
journal_title:Clinical neuroradiology
pub_type: 杂志文章,评审
doi:10.1007/s00062-018-0679-z
更新日期:2019-09-01 00:00:00
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journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-011-0075-4
更新日期:2011-09-01 00:00:00
abstract:PURPOSE:The aim of this study was to compare the diagnostic accuracy of 3D time-of-flight (TOF-MRA) and contrast-enhanced (CE-MRA) magnetic resonance angiography at 3 T for detection and quantification of proximal high-grade stenosis using multidetector computed tomography angiography (MDCTA) as reference standard. ME...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-013-0279-x
更新日期:2015-03-01 00:00:00
abstract::Conventional magnetic resonance (MR) imaging of space-occupying lesions may answer most of the questions concerning the diagnosis and subsequent treatment strategies if patient age, clinical and paraclinical findings are considered as well. However, crucial and relevant differential diagnoses require additional MR met...
journal_title:Clinical neuroradiology
pub_type: 杂志文章,评审
doi:10.1007/s00062-011-0073-6
更新日期:2011-09-01 00:00:00
abstract:PURPOSE:The aim of the study was to examine the effects of mechanical thrombectomy using the Solitaire stent in patients with thromboembolic occlusions of the intracranial carotid artery bifurcation (carotid T) or middle cerebral artery (MCA) and to compare the results with a historical cohort treated with local intraa...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-011-0099-9
更新日期:2012-06-01 00:00:00
abstract:PURPOSE:Patients with transient global amnesia (TGA) present with a characteristic clinical syndrome although other differential diagnoses have to be considered. Diffusion-weighted imaging (DWI) represents a highly specific diagnostic tool in the context of TGA; however, standard clinical DWI often fails to detect the ...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-012-0140-7
更新日期:2012-12-01 00:00:00
abstract:PURPOSE:The low-profile Acandis Acclino is a self-expandable nitinol microstent for stent-assisted coiling of intracranial aneurysms. This article reports long-term clinical and angiographic outcome in a multicenter setting. METHODS:In this study 98 consecutive patients (mean age 55.4 ± 13.5 years) were treated with t...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-019-00847-4
更新日期:2020-12-01 00:00:00
abstract:PURPOSE:The optimal strategy for the treatment of M1 segment aneurysms has not yet been determined as both standard microneurosurgical and endovascular techniques can pose challenges. We sought to determine the efficacy of flow diverting stents to treat small, unruptured aneurysms of the M1 segment. METHODS:We retrosp...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-016-0553-9
更新日期:2018-06-01 00:00:00
abstract:PURPOSE:Knowledge about the localization and outcome of iatrogenic dissection (ID) during endovascular treatment of acute ischemic stroke (AIS) is limited. We aimed to determine the frequency, clinical aspects and morphology of ID in endovascular AIS treatment and to identify predictors of this complication. METHODS:D...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-017-0639-z
更新日期:2019-03-01 00:00:00
abstract:PURPOSE:Our aim was to identify imaging characteristics of pilocytic astrocytomas (PAs) in the cerebral ventricles to help radiologists distinguish PAs from other brain tumors preoperatively. METHODS:Twelve postsurgery patients with a pathological PA diagnosis were included. Among them, 10 had submitted to surgery bas...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-015-0370-6
更新日期:2016-09-01 00:00:00
abstract:PURPOSE:Brain arteriovenous malformations (bAVM) are the main cause of pediatric intracerebral hemorrhage (pICH). Embolization with Onyx (ev3, Irvine, CA, USA) in children with ruptured bAVM has been infrequently reported. The aim of this study was to assess the safety and efficacy profile of Onyx embolization as first...
journal_title:Clinical neuroradiology
pub_type: 杂志文章
doi:10.1007/s00062-019-00861-6
更新日期:2019-12-04 00:00:00