Search Results
Results 251 - 300 of 1549
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Alharbi Fahd Ali - - 2009
We had a rare case of 50-year-old woman with a unilateral hypoglossus nerve palsy as a sign of clival chordoma. A computed tomography (CT) scan of the skull base showed bone destruction at the anterior part of the foramen magnum and CT scan of the neck reveals asymmetrical area at ...
Wilson Matthew W - - 2009
PURPOSE: To correlate the histologic and magnetic resonance imaging results of the optic nerve in eyes primarily enucleated for retinoblastoma. DESIGN: Retrospective, clinicopathologic correlation. PARTICIPANTS: Sixty-seven consecutive patients with retinoblastoma who underwent primary enucleation. METHODS: The histologic results of 67 eyes from 67 patients with retinoblastoma who underwent primary enucleation ...
Oystreck Darren T - - 2009
To summarize the clinical, neuroradiologic, and genetic observations in a group of patients with unilateral synergistic divergence (SD). Five unrelated patients with unilateral SD underwent ophthalmic and orthoptic examinations; three of them also had magnetic resonance imaging of the brain and orbits. Three patients underwent genetic evaluation of genes known ...
Yoshimoto Mitsunori - - 2009
STUDY DESIGN: Retrospective case series review of patients showing sciatica without radiographic evidence of nerve root compression. OBJECTIVE: To elucidate clinical features of sciatica caused by extralumbar spinal lesions. SUMMARY OF BACKGROUND DATA: Sciatica caused by extralumbar spinal lesions has been reported sporadically. Given the paucity of case series studies, ...
Gomes Eymeric - - 2009
Magnetic resonance (MR) images of the brain of four normal cats were reviewed retrospectively to assess the emergence and course of the cranial nerves (CNs). Two-millimeter-thick images were obtained in transverse, sagittal, and dorsal planes using a 1.5 T unit. CN skull foramina, as anatomic landmarks for MR imaging, were ...
Hong H S - - 2010
The purpose of this study was to evaluate the enhancement pattern of the normal facial nerve at 3.0 T temporal MRI. We reviewed the medical records of 20 patients and evaluated 40 clinically normal facial nerves demonstrated by 3.0 T temporal MRI. The grade of enhancement of the facial nerve ...
Moxham J Paul - - 2009
To describe the importance of imaging with the use of magnetic resonance (MR) or computed tomography (CT) during the diagnostic workup of a patient with sensorineural hearing loss to determine the status of the cochlear nerve. Retrospective review. Tertiary care academic institution. A pediatric database was used to find patients ...
Dhoot Dilsher S - - 2009
Differentiating between Coats disease and retinoblastoma can be challenging. Magnetic resonance imaging typically is obtained when retinoblastoma is suspected to evaluate for a mass or optic nerve infiltration, the latter appearing as an enhancing lesion. We report a case of optic nerve enhancement observed in the setting of an acute ...
Behr Björn B Department of Plastic, Reconstructive, and Hand Surgery, University of Magdeburg, and the Leibniz Institute for Neurobiology, Magdeburg, Germany. - - 2009
The preoperative diagnostic imaging of peripheral nerve lesions and the postoperative monitoring of microsurgically coapted nerves remain unsolved problems. The aim of this study was to investigate peripheral nerve regeneration after complete neurotmesis with magnetic resonance imaging techniques. Study groups included 70 rats. Their right sciatic nerve was either cut ...
Apaydin Nihal - - 2009
The percutaneous repair of the calcaneal tendon (CT) places the sural nerve (SN) at high risk for injury up to 60%. The aim of our study, therefore, was to explore and describe the course of SN in relation to the CT and to provide an anatomical description of the area ...
Arishima Hidetaka - - 2010
INTRODUCTION: The patient had an enlarging left-side neck mass without neurological symptoms. METHODS: Magnetic resonance (MR) imaging revealed a well-demarcated mass close to the left root of C4. RESULTS: During the surgery, we confirmed a tumour arising from the cervical phrenic nerve. Although neurogenic tumours of the phrenic nerve are ...
Singh Sharma Manish - - 2009
The authors report the unique occurrence of an isolated post-ictal contralateral oculomotor nerve (OCN) palsy following excision of a medial frontal oligoastrocytoma. A 45-year-old male presented with a history of generalized tonic clonic seizures (GTCS) for 8 years. His neurological examination was unremarkable. Magnetic resonance imaging (MRI) of the brain ...
Kitsos G - - 2009
Neuropathological studies in experimental and human glaucoma have shown degenerative changes in the optic pathway. The purpose of the study was to evaluate, with conventional MRI and magnetisation transfer imaging, the brain and the optic pathway of patients with primary open-angle glaucoma (POAG). 26 patients, aged 67.4+/-8.6 years, and 26 ...
Peker Selçuk - - 2009
BACKGROUND: The aim of this study was to assess whether individuals without symptoms of trigeminal neuralgia exhibit vascular compression of the trigeminal nerve. This was investigated using ultra-high-field MR imaging. METHODS: One hundred subjects were imaged using a 3-T magnet and high-spatial-resolution three-dimensional (3D) MR imaging with 3D constructive interference ...
Menezes Arnold H - - 2009
OBJECTIVE: Developmental remnants around the foramen magnum, or proatlas segmentation abnormalities, have been recorded in postmortem studies but very rarely in a clinical setting. Because of their rarity, the pathological anatomy has been misunderstood, and treatment has been fraught with failures. The objectives of this prospective study were to understand ...
Linn Jennifer - - 2009
OBJECT: The aim of this study was to determine whether high-resolution MR imaging is suitable for identifying and differentiating among the nerve root bundles of the glossopharyngeal (cranial nerve [CN] IX), vagus (CN X), and accessory nerves (CN XI) as well as any adjacent vessels. METHODS: Twenty-five patients (50 sides) ...
Zhao Qing-Yan - - 2009
BACKGROUND: The crista terminalis (CT) is known to initiate and maintain atrial arrhythmia, and is affected by autonomic tone, but the underlying mechanisms are poorly understood. This study sought to study the relation between autonomic innervation in CT and atrial arrhythmia. METHODS: Thirty adult canines were used in the present ...
Liang Changhu - - 2010
OBJECTIVE: To evaluate the detailed anatomic features, neurovascular relationships of the cisternal segment of the posterior group of cranial nerves (PGCN: IX, X, XI, XII); to evaluate the utility of magnetic resonance (MR) in demonstrating the PGCN with disorders caused by abnormal compression related to artery or tumor. METHODS: A ...
Pawate S - - 2009
OBJECTIVE: To report on the clinical presentations, laboratory abnormalities, treatment and outcomes in 54 patients with neurosarcoidosis (NS). BACKGROUND: Sarcoidosis is an inflammatory granulomatous disease affecting multiple organ systems. Neurosarcoidosis (CNS involvement) is seen in approximately 25% of patients with systemic sarcoidosis, although it is subclinical in most of these ...
Zhang Zhongwei - - 2009
STUDY DESIGN: A prospective observational study of patients with sciatica. OBJECTIVE: We investigated the effectiveness of 3-dimensional high-spatial resolution diffusion-weighted MR neurography based on steady state free precession (3-dimensional diffusion-weighted steady-state free precession [DW-SSFP]) in the diagnosis of sciatica. SUMMARY OF BACKGROUND DATA: Patients with sciatica challenge a physician who ...
Niggemann P - - 2009
We present the case of a patient with a spondylolisthesis of L5 on S1 due to spondylolysis at the level L5/S1. The vertebral slip was fixed and no anterior instability was found. Using functional magnetic resonance imaging (MRI) in an upright MRI scanner, posterior instability at the level of the ...
Moon W-J - - 2009
BACKGROUND AND PURPOSE: The cisternal segments of the lower cranial nerves (CNs) adjacent to the jugular foramen (JF) are difficult to identify reliably by routine MR imaging. We performed a 3D balanced fast-field echo imaging technique (3D-bFFE) to obtain detailed anatomy of the cisternal segments of CNs IX, X, and ...
Nowack Rainer - - 2009
The problem of diagnosing vasculitic neuropathy is discussed based on case reports of two patients with Wegener's granulomatosis. One patient developed de novo 6(th) nerve palsy as an isolated relapse manifestation and the second patient a sequence of multiple cranial nerve palsies. Brain imaging with CT and MRI and the ...
Stoll Guido - - 2009
The diagnostic work up of patients with peripheral neuropathy largely depends on clinical and electrophysiological investigations. In contrast to disorders of the CNS, magnetic resonance imaging (MRI) has not been widely used as a diagnostic tool in the PNS except for detection of nerve compressing mass lesions. Normal nerves appear ...
Gupta Preeya K - - 2009
A 70-year-old woman with a history of diabetes mellitus and arterial hypertension presented with bilateral abduction deficits consistent with bilateral sixth nerve paresis. A diagnostic evaluation including magnetic resonance imaging and lumbar puncture was unrevealing. The bilateral sixth nerve paresis spontaneously resolved suggesting ischemic or microvascular disease as the underlying ...
Hatipoglu Hatice Gul - - 2009
A 29-year-old man developed vision loss in the right eye due to ophthalmic artery, cavernous sinus, and superior ophthalmic vein occlusion in mucormycosis. Diffusion MRI obtained within 2 days of symptom onset showed that the apparent diffusion coefficient values of the optic nerve and retina were remarkably decreased on the ...
Amemiya Shiori - - 2009
INTRODUCTION: The purpose of this study is to apply contrast-enhanced 3D fast-imaging employing steady-state acquisition (3D-FIESTA) imaging to the evaluation of cranial nerves (CN) in patients with cavernous sinus tumors. METHODS: Contrast-enhanced 3D-FIESTA images were acquired from ten patients with cavernous sinus tumors with a 3-T unit. RESULTS: In all ...
De Feo Fabio - - 2009
PURPOSE: To evaluate whether artifacts caused by a stainless steel glaucoma drainage device can alter the interpretation of magnetic resonance imaging (MRI) scans of the optic nerve and brain. DESIGN: Consecutive case series. METHODS: Five patients (7 eyes) with Ex-PRESS devices (Optonol Ltd, Neve Ilan, Israel) positioned at the limbus ...
Lee Y S - - 2009
BACKGROUND AND PURPOSE: The significance of postoperative nerve root changes (enhancement, thickening, and displacement) is still a topic of debate. The purpose of this study was to evaluate the association between nerve root changes and residual or recurrent symptoms after lumbar surgery with contrast-enhanced MR imaging. MATERIALS AND METHODS: A ...
Kasai Sachio - - 2009
Conclusion: Magnetic resonance imaging (MRI) after intratympanic gadolinium injection can reveal endolymphatic hydrops (ELH) in patients with delayed ELH (DELH). Patients with contralateral DELH may have bilateral ELH. Objective: DELH has previously been diagnosed based on clinical history, hearing and vestibular examinations. DELH is classified into three types: ipsilateral, contralateral ...
Xu Jun - - 2009
Osteochondromas, which are benign bone tumors that usually develop on long bones, tubular bones, are rarely found in the spine. If they are located in the spinal canal, they may cause nerve root or spinal cord compression, which is a rare but potentially catastrophic manifestation of osteochondromas. In this article, ...
Kulkarni M - - 2009
Leprosy is a chronic granulomatous infection, caused by mycobacterium leprae, primarily affecting the peripheral nerve trunks and cutaneous nerves. It classically presents with neural or dermal signs and symptoms. The indolent course of leprosy may manifest as erythema nodosum (appearance of tender inflamed subcutaneous nodule) and reversal reaction (inflammation in ...
Pakzad-Vaezi Kaivon - - 2009
We present a case report of a 21-month-old female patient to highlight magnetic resonance (MR) imaging findings associated with papilledema in a pediatric patient with an intracranial tumor. The MR findings included optic disc elevation, dilated perioptic subarachnoid spaces, optic nerve tortuosity and restricted diffusion in the optic nerve heads, ...
Tsuda Emiko - - 2009
A 40-year-old woman was admitted to our hospital because of double vision combined with left ptosis. Although at 25 years of age she had already been diagnosed with limb weakness associated with chronic inflammatory demyelinating polyneuropathy (CIDP), she had never experienced double vision until her latest condition. Neurological examination revealed ...
Piskin Ahmet - - 2009
Although use of platelet gel (PG) for promoting tissue regeneration is a popular approach because of its capacity to accelerate tissue regeneration, to our knowledge, its effects on peripheral nerve have still not been elucidated. Therefore, the aim of this study was to investigate effects of PG on sciatic nerve ...
Tatsugawa Maria - - 2009
We report the case of a patient with orbital malignant lymphoma that was not detected by imaging studies when she presented with impaired vision, which lead to her eventual loss of sight. A 71-year-old Japanese woman complained of deteriorating vision in her left eye. On examination, papilledema was detected, but ...
Arora Jyoti - - 2009
The present study describes the topography and morphometry of a unilateral ossified sacrotuberous ligament. It aims to discuss its anatomical, radiological and clinical implications. The pudendal nerve, internal pudendal artery, nerve to obturator internus and coccygeal branch of inferior gluteal artery are all-important structures near sacrotuberous ligament. An ossified sacrotuberous ...
Spilberg Gabriela - - 2009
Neurofibromatosis type 2 is an inherited autosomal dominant syndrome, characterized by multiple neoplasms of the central and peripheral nervous system associated with ocular abnormalities. The most common tumor associated with the disease is the vestibulocochlear schwannoma (VIII cranial nerve), and as many as 10% of patients with this tumor have ...
Wijesinghe Ranjith R Department of Physics and Astronomy, Ball State University, Muncie, Indiana, USA. - - 2009
Many researchers have attempted to detect neural currents directly using magnetic resonance imaging (MRI). The action currents of a peripheral nerve create their own magnetic field that can cause the phase of the spins to change. Our goal in this paper is to use the measured magnetic field of a ...
Sun Xiaoli - - 2010
PURPOSE: To evaluate the value of three-dimensional (3D) constructive interference in steady-state (CISS) magnetic resonance (MR) imaging with multi-planar reconstruction (MPR) in displaying the relationship between the oculomotor nerve and its adjacent structures for patients with oculomotor paralysis. MATERIALS AND METHODS: 17 consecutive patients with oculomotor paralysis were examined with ...
Alfonso Israel - - 2008
We report 2 patients with obstetrical brachial plexus palsy, ipsilateral leg weakness, and contralateral motor cortical dysplasia. To our knowledge, this is the first description of such an association. In both cases, the diagnosis of obstetrical brachial plexus palsy was established clinically shortly after birth and later confirmed neurophysiologically. Motor ...
Ladevèze Sandrine - - 2008
We present reconstructions of petrosal anatomy based on high-resolution X-ray computed tomography scans for the fossil mammal Necrolestes and for the marsupial mole Notoryctes sp. Compared with other mammals, Necrolestes exhibits a mosaic of plesiomorphic and derived characters, but most of the evidence supports its metatherian status. We revised previous ...
Sureka J - - 2009
Magnetic resonance imaging (MRI) has become the primary imaging technique in the evaluation of brachial plexus pathology, and plays an important role in the identification, localization, and characterization of the cause. Improvements in MRI technique have helped in detecting changes in the signal intensity of nerves, subtle enhancement, and in ...
Joshi M C - - 2008
Guillain-Barré syndrome, known for its diverse, atypical and heterogeneous range of presentations, can rarely present in an apparent comatose state with absent brainstem reflexes. Two patients presented in an unresponsive state with flaccid quadriplegia, total areflexia with no response to cephalic or peripheral painful stimuli. Pupils were mid-dilated with absent ...
Song Mee Hyun - - 2008
CONCLUSIONS: Quantitative analysis of the facial nerve on the lesion side as well as the normal side, which allowed for more accurate measurement of facial nerve enhancement in patients with facial palsy, showed statistically significant correlation with the initial severity of facial nerve inflammation, although little prognostic significance was shown. ...
Boroffka Susanne A E B - - 2008
We describe the magnetic resonance (MR) imaging aspects of normal canine optic nerve, the diameter of the optic nerve as measured on MR images, and optimal MR sequences for the evaluation of the optic nerve using a 0.2T MR unit. Three millimeter contiguous slides of the normal canine orbital region ...
Zevgaridis Dimitris - - 2008
Intraspinal extradural lipomas, not associated with spinal dysraphism, are rare lesions. True adult lipomas have to be distinguished from angiolipomas and from epidural lipomatosis. The authors report a unique case of a patient with unilateral lumbar nerve root compression caused by extradural, intraforaminal, true adult lipoma. A 62-year-old woman suffered ...
Stark T A - - 2009
Limited studies of brain MR imaging findings in Usher syndrome have reported atrophy with enlarged subarachnoid spaces. However, the specific appearance of the subarachnoid spaces surrounding the cranial nerves has not yet been described. Herein we describe the skull base MR imaging findings in an adult with Usher syndrome. Multiple ...
Goru S J - - 2009
We present a case of an epidermoid cyst in contact with the inferior and lateral aspects of the left trigeminal nerve, which resulted in secondary trigeminal neuralgia of the left mandibular branch of the trigeminal nerve. The symptoms were typical of trigeminal neuralgia, with no other neurological signs and symptoms. ...
Hof Jurrit J - - 2008
New developments in clinical peripheral nerve imaging with MRI over the past few years, primarily those related to nerve entrapment syndromes, are reviewed. The basic principles of peripheral nerve imaging are described briefly. Relevant current or forthcoming technical innovations are described, and then recent work describing novel findings, organized by ...
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