Study Design. Retrospective analysis of lumbosacral radiculography using three dimensional (3D) magnetic resonance (MR) rendering in patients with extraforaminal disc herniation.Objective. To investigate the significance of lumbosacral radiculography as depicted by 3D MR rendering in the diagnosis of symptomatic extraforaminal disc herniation with or without foraminal extension.Summary of Background Data. ...

OBJECT: The purpose of this study was to evaluate the efficacy of intra-operative computerized tomography (CT) scanning in the analysis of bone removal accuracy during anterior cervical corpectomy, in order to allow any necessary immediate correction in the event of inadequate bone removal. METHODS: From September 2009 to December 2010 ...

INTRODUCTION: Limited reliability data exist for localised magnetic resonance imaging (MRI) findings relevant to planning of treatment with lumbar disc prosthesis and later outcomes. We assessed the reliability of such findings in chronic low back pain patients who were accepted candidates for disc prosthesis. METHODS: On pretreatment MRI of 170 ...

Purpose:  To evaluate the diagnostic yield of optic nerve ultrasonography (US) in distinguishing between papilloedema (swollen discs owing to raised intracranial pressure) and pseudopapilloedema. Methods:  We prospectively evaluated all patients with bilateral optic disc swelling who underwent a complete neuro-ophthalmological examination. Suitable patients were referred for neuroimaging (computerized tomography or ...

PURPOSE: Cervical translaminar screw fixation has been shown to be safe, efficient and provides alternative for cervical fixation. However, its use in the Asian population should be considered cautiously because the cervical lamina diameter may not be adequate to accommodate the standard lamina screw size. We studied the average transverse ...

PURPOSE: In about 5% of all cases LBP is associated with serious underlying pathology requiring diagnostic confirmation and directed treatment. Magnetic resonance imaging (MRI) is often used for this diagnostic purpose yet its role remains controversial. Consequently, this review aimed to summarize the available evidence on the diagnostic accuracy of ...

SUMMARY:A ruptured dermoid cyst is rare and can present with various symptoms. We report imaging findings of an intracranial dermoid cyst that ruptured into the endolymphatic sac, causing sudden sensorineural hearing loss.

A wide variety of complex, multicomponent plasmonic nanostructures have been shown to possess Fano resonances. Here we introduce a remarkably simple, planar nanostructure- a single metallic nanodisk with a missing wedge-shaped slice- that also supports a Fano resonance. In this geometry, the Fano lineshape arises from the coupling between a ...

AIM: In low back pain if serious pathology is suspected diagnostic imaging could be performed. One of the imaging techniques available for this purpose is computed tomography (CT), however, insight in the diagnostic performance of CT is unclear. METHOD: Diagnostic systematic review. Studies assessing the diagnostic accuracy of CT in ...

OBJECTIVES: This study was performed to assess the role of retrospective PET-MRI fusion with Ga-68-DOTA(0)-Phe(1)-Tyr(3)-octreotide (Ga-68-DOTATOC) PET and Gd-EOB-DTPA MRI in the detection of hepatic metastases from neuroendocrine tumours (NET). METHODS: Twenty-two consecutive patients with suspected liver metastases from histopathologically proven NET were examined with Gd-EOB-DTPA MRI and multiphase contrast-enhanced ...

OBJECTIVE: The purpose of this study was to determine the rate of lumbar stenosis detected via magnetic resonance imaging (MRI) in patients with symptomatic foraminal stenosis, lateral recess stenosis, or central stenosis. METHODS: A retrospective review was performed on 1983 MRI scans from a 2-year period on 1486 symptomatic patients. ...

ABSTRACT: Study Design: Prospective cohort studyObjective: To investigate the fate of posterior osteophytes after anterior cervical discectomy and fusion (ACDF) using computed tomography (CT).Summary of Background Data: As a method of ACDF, indirect decompression through interbody height distraction and spontaneous posterior osteophyte resorption has the advantage of reducing complications that ...

Magnetorotational instability (MRI) triggers turbulence and enables outward transport of angular momentum in hydrodynamically stable accretion discs. By using the WKB approximation and methods of singular function theory, we resolve two different paradoxes of MRI that appear in the limits of infinite and vanishing magnetic Prandtl number. For the latter ...

OBJECTIVES: Disc displacement is accepted as one of major findings in temporomandibular disorders. Correlation between lateral pterygoid muscle (LPM) attachment type to the disc-condyle complex and TMJ dysfunction has rarely been discussed and still not clarified. The purpose of this study was to assess the prevalence LPM attachment type to ...

Computed tomography (CT)/magnetic resonance imaging (MRI) fusion is considered to be the best method for postimplant dosimetry of permanent prostate brachytherapy; however, it is inconvenient and costly. In T2*-weighted image (T2*-WI), seeds can be easily detected without the use of an intravenous contrast material. We present a novel method for ...

Sunspots are regions where strong magnetic fields emerge from the solar interior and where major eruptive events occur. These energetic events can cause power outages, interrupt telecommunication and navigation services, and pose hazards to astronauts. We detected subsurface signatures of emerging sunspot regions before they appeared on the solar disc. ...

One of the most common indications for performing magnetic resonance (MR) imaging of the lumbar spine is the symptom complex thought to originate as a result of degenerative disk disease. MR imaging, which has emerged as perhaps the modality of choice for imaging degenerative disk disease, can readily demonstrate disk ...

BACKGROUND CONTEXT: The integrity of the posterior ligamentous complex (PLC) has been proposed to be an integral aspect in the treatment algorithm for spinal trauma. Magnetic resonance imaging (MRI) has been reported as the ideal tool to determine the integrity of the PLC. The ability to assess disruption of the ...

Background:Spinal growth modulation has been proposed as a non-fusion strategy for treatment of idiopathic scoliosis, although the effect of this treatment modality on intervertebral disc health has not been evaluated in detail. The objectives of this in vivo study were to assess the creation of three-dimensional spinal deformity during six ...

STUDY OBJECTIVE: We aim to determine the prevalence and factors associated with cervical discoligamentous injuries detected on magnetic resonance imaging (MRI) in acute, alert, neurologically intact trauma patients with computed tomography (CT) imaging negative for acute injury and persistent midline cervical spine tenderness. We present the cross-sectional analysis of baseline ...

The aim of this study is to reveal the association between lumbar spondylolysis and several radiologic parameters, which had been suggested to be significant. The authors examine interfacet distance (IFD), facet joint orientation (FJO), and lumbar segmental lordosis (LSL) all together on the basis of lumbar computed tomography (CT) scan ...

The objective of our study was to analyze the use of screening cervical spine CT performed after trauma and establish the opportunity of potentially avoidable studies when evidence-based clinical criteria are applied before imaging. All cervical spine CT examinations performed in the emergency department of a level 1 trauma center ...

COMMENTARY ON: Crosby CG, Even JL, Song Y, et al. Diagnostic abilities of magnetic resonance imaging in traumatic injury to the posterior ligamentous complex: the effect of years in training. Spine J 2011;11:747-53 (in this issue).

Lower back pain is widely prevalent in the world today, and the situation is aggravated due to a shortage of radiologists. Intervertebral disc disorders like desiccation, degeneration and herniation are some of the major causes of lower back pain. In this paper, we propose a robust computer-aided herniation diagnosis system ...

Chiari malformations 1, 2, 3 represent different degrees of herniation of posterior fossa content into the cervical canal (Chiari 1 and 2), or through an upper-cervical meningocele (Chiari 3), whereas Chiari 4 anomaly consists of hypoplasia of the cerebellum. Chiari 1 malformation (CM1) is the commonest anomaly; it is probably ...

BACKGROUND AND PURPOSE: T2 and ADC mappings are 2 quantitative MR imaging tools for assessing IVDD. This study aimed to compare these 2 measures in detecting IVDD and its age-related changes. MATERIALS AND METHODS: Thirty-seven asymptomatic volunteers and 28 patients with back pain or sciatica were examined, and their lumbar ...

PURPOSE: To evaluate the imaging findings of patients with clinical symptoms of lower back pain who underwent magnetic resonance imaging (MRI) of the lumbar spine with axial loading. MATERIALS AND METHODS: We examined 120 patients by MRI, before and after axial loading, using a compression device that applied 50% of ...

Abstract<br /> Introduction. The development of diagnostic imaging facilitates evaluation of spinal anatomy, but there is no full correspondence between morphologic and pathologic changes observed in radiographic studies and clinical findings.<br /> The aim of the study was to:<br /> 1. Evaluate the degree of signal intensity and degenerative changes ...

Despite recent trends toward evaluation of back and neck pain with magnetic resonance imaging, myelography and postmyelography computed tomography continue to play an important role in the workup of many patients with spinal pathology. We present techniques for the safe and efficient performance of myelography, lumbar, and cervical puncture, which ...

Exact information about the shape of a lumbar pedicle can increase operation accuracy and safety during computer-aided spinal fusion surgery, which requires extreme caution on the part of the surgeon, due to the complexity and delicacy of the procedure. In this paper, a robust framework for segmenting the lumbar pedicle ...

Objective-To evaluate the reliability of the Thompson system for use in grading the gross pathological changes of intervertebral disk (IVD) degeneration in dogs and to investigate the agreement between gross pathological findings and low-field (0.2-T) magnetic resonance imaging (MRI) findings. Sample-Vertebral columns from cadavers of 19 dogs of various ages, ...

Objective-To evaluate effects of imaging plane, flexion and extension, patient weight, and observer on computed tomographic (CT) image measurements of the area of the lumbosacral (L7-S1) intervertebral foramen (LSIF) in dogs. Sample-12 dog cadavers (2 were excluded because of foraminal stenosis). Procedures-In each cadaver, sagittal, sagittal oblique, transverse oblique, and ...

In this study, the authors' goal was to investigate the long-term progression of disc degeneration and the participating mechanisms induced by needle puncture in a rat caudal disc model. The C5-6 and C7-8 intervertebral discs of the caudal spine in rats were stabbed laterally using 21-gauge hypodermic needles to a ...

PURPOSE: To quantitatively assess the changes in disc position relative to the condyle, disc length, and condylar height, with magnetic resonance imaging in patients with anterior disc displacement of the temporomandibular joint who had received no treatment, to provide useful information regarding treatment planning. PATIENTS AND METHODS: The study included ...

We report two cases of cervical spondylotic myelopathy (CSM) with extensive T2-weighted intramedullary changes noted on preoperative imaging extending far beyond the level of compression. A delayed resolution 2 years after cervical oblique corpectomy was noted in both cases. This short report cautions against diagnosing this unusual magnetic resonance imaging ...

Study Design: An in vivo study of intervertebral disc degeneration using quantitative MRI and MRS.Objective: To quantify water and proteoglycan (PG) content in the intervertebral disc using in vivo magnetic resonance spectroscopy (MRS), and to evaluate the relationship between MRS- quantified water/PG content, T1ρ, Pfirrmann score, clinical self-assessment, and discography.Summary ...

BACKGROUND CONTEXT: The accurate detection of the extent of bony fusion after attempted lumbar arthrodesis is important given that subsequent efforts-such as decisions regarding need for continued external bracing, use of enhancing modalities (electrical stimulation and pulsed ultrasound), recommended activity levels, return to employment, early surgical intervention, and others-may be ...

A 7-year-old castrated male mixed dog was presented with a complaint of acute pain. The dog had suffered from isolated seizures for two years. Magnetic resonance imaging (MRI) of the brain revealed a smooth brain surface due to lack of gyri and sulci formation of the cerebrum and thick cortical ...

INTRODUCTION: Lumbar spinal stenosis (LSS) treatment is based primarily on the clinical criteria providing that imaging confirms radiological stenosis. The radiological measurement more commonly used is the dural sac cross-sectional area (DSCA). It has been recently shown that grading stenosis based on the morphology of the dural sac as seen ...

The synthesis, structure and magnetic properties of two isostructural heptametallic lanthanide discs are reported, showing single molecule magnet (SMM) behaviour with a large energy barrier for the dysprosium analogue and a large magnetocaloric effect (MCE) for the gadolinium analogue.

OBJECTIVE: To observe the in vivo effects of MRI scanning on the Vibrant Soundbridge system. STUDY DESIGN: Retrospective questionnaire. METHOD: Sixty-three implantees answered a retrospective questionnaire covering their medical/otological and physical conditions pre-, intra-, and post-magnetic resonance imaging scanning (MRI). Bone conduction (BC) thresholds were measured after MRI scanning and ...

BACKGROUND: Brachioradial pruritus (BRP) describes a rare form of itching occurring at the dorsolateral part of the forearms. Recent case reports suggest that BRP may be attributed to cervical lesions or spine neoplasms. OBJECTIVE: We sought to determine the incidence of cervical spine changes in BRP and to correlate the ...

Introduction: This study aimed to describe a spectrum of magnetic resonance (MR) imaging findings in a case series of four patients with recurrent vertebral hydatid disease (HD). Methods: Four patients with recurrent spinal HD, who were studied with MR imaging at 1.5T or 0.5T MR units, were encountered during a ...

The authors present the case of a 56-year-old right hand-dominant woman who was referred for chronic neck pain and a second opinion regarding a cervical lesion. The patient's pain was localized to the subaxial spine in the midline. She reported a subjective sense of intermittent left arm weakness manifesting as ...

BACKGROUND: Magnetic resonance imaging (MRI) is often used to evaluate low back pain; however, MRI in the supine position does not always reveal degenerative spondylolisthesis. The existence of a linear correlation between increased fluid in the facet joints seen on the supine axial T2 MRI of the lumbosacral spine and ...

BACKGROUND AND IMPORTANCE:: Symptomatic lumbar disc herniation is common. Migration of a free disc fragment is usually found in rostral, caudal, or lateral directions. Posterior epidural migration is very rare. We report the first case with posterior epidural migration and sequestration into bilateral facet joints of a free disc fragment. ...

Eleven new, stable, push-pull systems that feature 4,5-bis[4-(N,N-dimethylamino)phenyl]imidazole and 4,5-dicyanoimidazole as the donor and acceptor moieties and the systematically extended and varied π-linker were prepared and investigated. Evaluation of the measured UV/Vis spectra, electrochemical data (cyclic voltammetry (CV), rotating-disc voltammetry (RDV), and polarography) and calculated β and γ polarizabilities showed ...

PURPOSE: Defining the site of recurrent disease early after definitive treatment for a localized prostate cancer is a critical issue as it may greatly influence the subsequent therapeutic strategy or patient management. METHODS: A systematic review of the literature was performed by searching Medline from January 1995 up to January ...

OBJECTIVES: To assess the incremental value of diffusion-weighted (DW-MRI) and dynamic contrast-enhanced MRI (DCE-MRI) to T2-weighted MRI (T2WI) in detecting locally recurrent prostate cancer after radiotherapy. METHODS: Twenty-four patients (median age, 70 years) with a history of radiotherapy-treated prostate cancer underwent multi-parametric MRI (MP-MRI) and transrectal prostate biopsy. Two readers independently ...

Streptococcus bovis is a Gram-positive coccus that can be found in the intestinal flora of healthy people; it is also associated with colon cancer and infective endocarditis. We report on a 79-year-old male who initially presented with acute-onset lower back pain. Streptococcus bovis was detected in repeated blood cultures, and ...