Search Results
Results 451 - 500 of 1540
< 5 6 7 8 9 10 11 12 13 14 15 >
Samii Madjid - - 2006
OBJECT: The aim of this study was to describe the symptomatology, radiological features, and surgical treatment of patients with cavernous angiomas within the internal auditory canal (IAC). METHODS: The authors reviewed the cases of seven patients with cavernous angiomas in the IAC that had been surgically treated in the 22-year ...
Sasaka K K - - 2006
Most of the previously reported lumbosacral nerve root avulsions presented with pseudomeningoceles at the time of delayed initial imaging. We report a case of traumatic lumbosacral nerve root injury associated with an isolated femur fracture and demonstrate the evolution of pseudomeningoceles following nerve root avulsions and edema in the perineural ...
Gurgel Richard K - - 2006
OBJECTIVE: To report a unique presentation of disseminated histoplasmosis. STUDY DESIGN: Case report. SETTING: University hospital, tertiary referral center. PATIENT: Our patient presented with vertigo, tinnitus, and unilateral hearing loss, and was initially found to have a 5-mm enhancing left internal auditory canal mass, as revealed by a magnetic resonance ...
Lewis Aaron M - - 2006
BACKGROUND: Sciatica without evidence of lumbosacral root compression is often attributed to piriformis syndrome. However, specific diagnostic tools have not been available to demonstrate sciatic nerve entrapment by the piriformis muscle. OBJECTIVE: To evaluate the use of magnetic resonance (MR) neurography in identifying abnormalities of the sciatic nerve in patients ...
Yoshikawa Takeharu - - 2006
Brachial plexus injury (BPI) is a severe neurologic injury that causes functional impairment of the affected upper limb. Imaging studies play an essential role in differentiating between preganglionic and postganglionic injuries, a distinction that is crucial for optimal treatment planning. Findings at standard myelography, computed tomographic (CT) myelography, and conventional ...
Chen J S - - 2006
A 44-year-old man developed bilateral blindness following severe periorbital cellulitis and pansinusitis. CT and MR imaging demonstrated bilateral cavernous sinus thrombosis. Diffusion-weighted imaging revealed reduced apparent diffusion coefficient in bilateral optic nerves, suggesting optic nerve ischemia caused by the cavernous sinus thrombophlebitis (CST). Following surgical debridement of pansinusitis, antimicrobial therapy, ...
Yoshioka Naoki - - 2006
PURPOSE: The aim of this study was to assess the feasibility of an original reformation method of cervical myelographic computed tomography (CT) using the Bezier surface technique. MATERIAL AND METHODS: Presurgical myelographic computed tomography (CT) scans using a multidetector row CT scanner were performed in 25 patients with avulsion injury ...
Chisholm E J - - 2006
BACKGROUND: Approximately 20 per cent of adult patients presenting to otolaryngology clinics have symptoms pertaining to the inner ear. These are investigated with magnetic resonance imaging (MRI) internal auditory meatus scans. This study analysed all findings from 736 sequential MRI internal auditory meatus scans performed on 731 patients over a ...
Sakina M S - - 2006
OBJECTIVE: Sensorineural hearing loss (SNHL) due to internal auditory canal (IAC) stenosis with hypoplasia of the cochleovestibular nerve is a rare disorder. The diagnosis of the IAC stenosis requires both high resolution computed tomography scan (HRCT) and magnetic resonance imaging (MRI). METHODS: A retrospective review over 6 years in an ...
West Christian A - - 2007
Prevention of neuron death after peripheral nerve injury is vital to regaining adequate cutaneous innervation density and quality of sensation, and while experimentally proven neuroprotective therapies exist, there lacks suitable clinical outcome measures for translational research. Axotomized dorsal root ganglia (DRG) histologically exhibit volume reduction in proportion to the amount ...
Haloi Achyut K - - 2006
BACKGROUND: Although there are multiple case reports and small series concerning facial infiltrative lipomatosis, there is no composite radiological description of the condition. OBJECTIVE: Radiological evaluation of facial infiltrative lipomatosis using plain film, sonography, CT and MRI. MATERIALS AND METHODS: We radiologically evaluated four patients with facial infiltrative lipomatosis. Initial ...
Urmey William F - - 2006
BACKGROUND AND OBJECTIVES: Conventional electrical stimulation has been done by continuous adjustment of current amplitude at a single, set pulse duration (conventionally, 0.1 ms). This study evaluated a novel technique for nerve location by utilization of a peripheral-nerve stimulator (PNS) programmed to deliver sequential electrical nerve stimuli (SENS). A repeating ...
Nardone R - - 2006
We present a previously unreported case of isolated oculomotor nerve palsy as the inaugural clinical sign of meningeal carcinomatosis (MC). Gadolinium-enhanced magnetic resonance images (MRI) were unremarkable. Cerebrospinal fluid (CSF) analysis showed malignant cells consistent with a pulmonary adenocarcinoma; the chest CT revealed a small pulmonary mass in the upper ...
Adunka Oliver F - - 2006
OBJECTIVE: To describe the internal auditory canal (IAC) and inner ear morphologic characteristics of children with cochlear nerve (CN) deficiency. STUDY DESIGN: Retrospective case series. SETTING: Tertiary referral center. PATIENTS: Fourteen children with small or absent (deficient) CNs have been identified by means of high-resolution magnetic resonance imaging (MRI). INTERVENTIONS: ...
Tilotta-Yasukawa Françoise - - 2006
Labiomandibular paresthesia after root canal treatment is an accident that is still too frequent despite the development of new endodontic techniques. The aim of this anatomical and clinical study is to advance the understanding of how accidents occur so as to avoid them. This anatomical study made it possible to ...
Connor S E J - - 2006
The effects of motor cranial nerve dysfunction on the computed tomography (CT) and magnetic resonance imaging (MRI) appearances of head and neck muscles are reviewed. Patterns of denervation changes are described and illustrated for V, VII, X, XI and XII cranial nerves. Recognition of the range of imaging manifestations, including ...
Tsai Po-Yi - - 2006
To clarify the relationships between electromyography (EMG) and magnetic resonance imaging (MRI), we compared findings in 37 selected patients who presented with cervical root avulsion injuries. Nerve root repair with C4-T1 hemilaminectomy was subsequently performed on 19 patients. The agreement between the two evaluative modalities with complete or incomplete lesions ...
Ferdinand Brett D - - 2006
PURPOSE: To retrospectively assess magnetic resonance (MR) imaging features of radial tunnel syndrome. MATERIALS AND METHODS: Institutional review board approval was obtained, and informed consent was waived for the retrospective HIPAA-compliant study. MR images of 10 asymptomatic volunteers (six men, four women; mean age, 30 years) and 25 patients (11 ...
Maranhão-Filho Péricles - - 2006
This article describes a 76 year old man that, after lung cancer surgery, showed left extrinsic oculomotor paralysis and contralateral paralysis of the superior rectus muscle associated with bilateral ptosis. Magnetic resonance imaging confirmed a rare situation characterized by an isolated metastasis in the region of the left third cranial ...
Golomb Meredith R - - 2006
This report describes a 10-year-old female who presented with poor growth and right hemihypotrophy. She had crossed sensory findings on neurologic examination consistent with a lateral medullary syndrome with no discernible cranial nerve findings, ataxia, or vertigo. Magnetic resonance imaging of the brainstem revealed a large right parapontine epidermoid. The ...
Koul Roshan - - 2006
Three siblings (one boy and two girls) with Brown-Vialetto-van Laere syndrome are reported. A peculiar feature of onset with hearing loss in a patient with multiple cranial nerve palsies and a positive family history suggests this diagnosis. In our family, an autosomal recessive mode of inheritance was seen. In addition, ...
Eder A - - 2006
OBJECTIVES: The purpose of this study was to investigate a new diagnostic approach to the examination of the canal configuration of the mesiobuccal root of the maxillary first molar. MATERIALS AND METHODS: High-resolution computed tomography (CT) was compared with histology in vitro. There were 152 teeth investigated and classified according ...
Marjelund S - - 2006
Tick-borne encephalitis virus is an important human pathogen in Europe. The infection usually presents as meningitis, meningoencephalitis, or meningoencephalomyelitis and only rarely as symptoms of isolated myeloradiculitis. We describe the lumbar MR imaging finding in a 48-year-old man with serologically confirmed tick-borne encephalitis in which there was enhancement of the ...
Allen Richard C - - 2006
PURPOSE: To describe the outcome of a patient with visual loss and optic nerve edema that resulted from osteopetrosis who underwent an optic nerve sheath fenestration (ONSF). DESIGN: Interventional case report. METHODS: A 33-year-old man with osteopetrosis had bilateral visual field loss and optic nerve edema. Computed tomography and magnetic ...
Cotton Charles A - - 2006
Although cavernous hemangiomas are commonly found supratentorially, their presence in the internal auditory canal is uncommon. We describe a case that was initially mistaken for a vestibular schwannoma due to its location in the cerebellopontine angle. Although there can be overlap in their presentations, familiarity with the characteristic magnetic resonance ...
Lemke Arne-Jörn - - 2007
PURPOSE: The purpose of this work was to evaluate the characteristic appearance of untreated retinoblastoma on a large sample in comparison to the histological findings after therapeutical enucleation. MATERIALS AND METHODS: In a prospective clinical trial 46 children with retinoblastoma in 63 affected untreated eyes were examined under general anesthesia ...
Warren Frank M FM - - 2006
OBJECTIVE: To determine whether the appearance of the inner ear on T2-weighted follow-up magnetic resonance imaging correlates with hearing status after hearing-preservation surgery for vestibular schwannoma. STUDY DESIGN: Retrospective chart review. SETTING: Tertiary referral medical center. PATIENTS: The study includes patients undergoing hearing-preservation surgery for vestibular schwannoma from 1998 to ...
Demer Joseph L JL Department of Ophthalmology, Jules Stein Dye Institute, University of California, Los Angeles, California 90095-7002, and Department of Medicine, Children's Hospital Boston, MA, USA. - - 2006
Although the ocular motility examination has been used traditionally in the diagnosis of strabismus that is a result of cranial nerve (CN) abnormalities, magnetic resonance imaging (MRI) now permits the direct imaging of lesions in CN palsies. Prospectively, nerves to extraocular muscles (EOMs) were imaged with T1 weighting in orbits ...
Kim Sungjun - - 2007
The diagnosis of nerve entrapment and compressive neuropathy has been traditionally based on the clinical and electrodiagnostic examinations. As a result of improvements in the magnetic resonance (MR) imaging modality, it plays not only a fundamental role in the detection of space-occupying lesions, but also a compensatory role in clinically ...
Kim Sungjun - - 2007
The diagnosis of nerve entrapment and compressive neuropathy has been traditionally based on the clinical and electrodiagnostic examinations. As a result of improvements in the magnetic resonance (MR) imaging modality, it plays not only a fundamental role in the detection of space-occupying lesions but also a compensatory role in clinically ...
Kerimoglu Ulku - - 2007
Hemangioma may occur at any location. Although the imaging findings of hemangioma are well known, it may be difficult to differentiate this entity from other soft-tissue tumors. Intraneural hemangiomas are extremely rare. We present a girl with a painful swelling in the fourth web space of her right hand. Since ...
Haggstrom Anita N - - 2006
OBJECTIVES: Large facial infantile hemangiomas have higher rates of complications than small localized hemangiomas, more often require treatment, and can be associated with neurological, ophthalmologic, and cardiac anomalies (PHACE syndrome). The anatomic patterns of these hemangiomas are often referred to as "segmental" despite a lack of precise anatomic definitions. Our ...
Loukas Marios - - 2006
Recent reports emphasize the importance of preserving the intercostobrachial nerve (ICBN) during surgical procedures (i.e., mastectomy, axillary clearance). However, a limited number of scientific reports explore the surgical anatomy of this nerve. We dissected 100 adult human formalin-fixed cadavers (200 axillae). In all the cadavers the ICBN was present with ...
Wiggins R H RH - - 2006
BACKGROUND AND PURPOSE: The imaging appearance of facial nerve schwannomas (FNSs) has been described as an enhancing tubular mass (using T1-enhanced MR) within an enlarged facial nerve canal (using CT). The purpose of this study is to identify how often the FNS imaging findings conform to this description and determine ...
Titlić Marina - - 2006
Vascular compression of the facial nerve is a well recognized cause of hemifacial spasm (HFS). Magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) provide vascular and brain tissue diagnosis in a single non-invasive examination and should be recommended as primary neuroradiological procedure in HFS. We report a rare case ...
Albayram Sait - - 2006
OBJECTIVE: We aimed to demonstrate the use of neuroimaging studies in vascular compression of the oculomotor nerve. CLINICAL PRESENTATION: A 24-year-old woman was noted by her dentist to have anisocoria, with the left pupil being larger than the right. After detailed ophthalmologic and neurological examination, we proceeded to perform neuroimaging. ...
Vucic S - - 2006
OBJECTIVE: Magnetic resonance imaging (MRI) of the ulnar nerve is being increasingly employed in the diagnosis of ulnar neuropathy at the elbow (UNE). Our aims were to: (i) assess the sensitivity of MRI in diagnosing UNE, especially in cases where neurophysiologic studies were non-localizing, (ii) determine the spectrum of MRI ...
Meek Marcel F - - 2006
The in vivo assessment of axonal projections of the peripheral nervous system has been severely limited by the lack of noninvasive techniques. We examined whether MR diffusion tensor imaging with fiber tracking of the human median nerve is feasible. The median nerve was examined with a 3-T MRI scanner in ...
Zhang Su-zhen - - 2006
BACKGROUND: Large vestibular aqueduct syndrome (LVAS) is a major cause of hearing loss in childhood. This study aimed at measuring external aperture of enlargement of the vestibular aqueduct (EVA) and analyzing relationship between the size of external aperture and hearing loss. METHODS: Diagnostic criteria of LVAS were based on hearing ...
Tokumaru A M - - 2006
PURPOSE: Visual acuity (VA) disturbance other than field defect is important in evaluating patients with pituitary macroadenoma. The purpose of this study was to evaluate MR imaging appearances of optic nerves in patients with pituitary macroadenoma and to ascertain whether visual impairment was correlated with abnormality in optic nerve signal ...
Pomeranz Howard D - - 2006
An 18-month-old white boy, observed by his parents at 1-2 months age to have poor visual attentiveness and nystagmus, underwent an ophthalmological evaluation. The patient also underwent unsedated 5-channel flash visual evoked potentials (VEP) and sedated electroretinogram (ERG) testing as well as magnetic resonance imaging (MRI) of the brain and ...
Erbay Sami H - - 2006
PURPOSE: To retrospectively evaluate the size of the trigeminal nerve on magnetic resonance (MR) images of patients with unilateral trigeminal neuralgia. MATERIALS AND METHODS: Institutional review board approval was obtained and informed consent was waived for this HIPAA-compliant study. The sizes of the trigeminal nerves in 31 patients (18 men ...
Zausinger Stefan - - 2006
OBJECTIVE: The indications for resection of cavernous malformations (CMs) of the brainstem include neurological deficits, (recurrent) hemorrhage, and surgically accessible location. In particular, knowledge of the thickness of the parenchymal layer and of the CM's spatial relation to nuclei, tracts, cranial nerves, and vessels is critical for planning the surgical ...
Artico M - - 2006
Lumbosacral nerve root anomalies are a rare group of congenital anatomical anomalies. Various types of anomalies of the lumbosacral nerve roots have been documented in the available international literature. Generally speaking, these anomalies may consist of a bifid, conjoined structure, of a transverse course or of a characteristic anastomized appearance. ...
White J Bradley - - 2006
The authors present clinical, imaging, and histological features of two adult patients found to harbor a conventional schwannoma contiguous with a deep plexiform schwannoma. One patient had neurofibromatosis (NF) Type 2 (NF2), and both intracranial (bilateral oculomotor, trigeminal, acoustic, and hypoglossal schwannomas as well as meningiomas) and intraspinal (schwannomas and ...
Matsuura F - - 2006
A fatal case of malignant atrophic papulosis (Degos disease) with optic nerve and spinal cord involvement is described. Magnetic resonance imaging (MRI) of the optic nerve showed abnormal signal enhancement on fat suppressed T1 weighted images after intravenous meglumine gadopentetate infusion. On T2 weighted sagittal images, a sawtooth pattern was ...
Bradley Lloyd J - - 2006
We present the clinical, imaging and neuropathological findings in three patients with predominant brachial plexus neuropathy. MR scanning was key to determining the brachial plexus involvement. Biopsy of the brachial plexus was performed in one patient. The appearances of the brachial plexus on MRI, in conjunction with the clinical presentations ...
Gizatdinova Yulia - - 2006
Feature-based method for detecting landmarks from facial images was designed. The method was based on extracting oriented edges and constructing edge maps at two resolution levels. Edge regions with characteristic edge pattern formed landmark candidates. The method ensured invariance to expressions while detecting eyes. Nose and mouth detection was deteriorated ...
Lu Ming - - 2006
We report a case of cervical anterior spinal artery syndrome (ASAS). MRI showed abnormal hypointense on T1-weighted images and hyperintense on T2-weighted images from vertebrae C2 to T3. The lesion involved the anterior two-third bilaterally. Spinal angiography showed the superior segmental obstruction of the anterior spinal artery. Regarding nerve conduction ...
Tumialán Luis M - - 2006
A 50-year-old woman presented with an acute painful complete third nerve palsy involving the pupil. Noninvasive imaging ruled out an aneurysmal compression of the third nerve, and brain magnetic resonance imaging demonstrated an intrinsic lesion of the third nerve. Work-up remained negative. All symptoms and signs resolved with steroids. In ...
< 5 6 7 8 9 10 11 12 13 14 15 >