Search Results
Results 501 - 550 of 1557
< 6 7 8 9 10 11 12 13 14 15 16 >
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
Atkins Edward J - - 2006
Optic neuritis is a common cause of visual loss in young patients, typically presenting with painful monocular visual loss and decreased color vision. Visual function generally spontaneously improves over weeks, and 95% of patients return to visual acuity of at least 20/40 within 12 months. The initial magnetic resonance imaging ...
Jung Tae-Young - - 2006
We report here on a case of intracranial inflammatory pseudotumor arising from the trigeminal nerve. A 52-year-old man presented with sudden onset severe headache. He had had facial numbness several months earlier and no signs indicating infection. On the computerized tomography scan, intracranial hemorrhage was detected at the cerebellopontine angle. ...
O'Hara Catherine M - - 2006
Pansynostosis (fusion of all cranial sutures) and optic atrophy were found as incidental CT scan and ophthalmological findings in an 8-year-old who presented to the emergency room with scalp edema from tight 'cornrow' hair braiding. Cranial vault expansion was successfully performed. Ophthalmological problems have stabilized but have not reversed. Late ...
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 ...
Holak Heinrich - - 2006
PURPOSE: To determine the frequency and dependence of Lyme borreliosis after tick infestation in the eyelid region. MATERIAL AND METHODS: Five patients after tick inoculation were investigated by immunofluorescence assays for IgM and IgG system). Ophthalmologic evaluation of myositis was supported with MRI, laboratory, and internal clinical investigations. RESULTS: Four ...
Hascalik S - - 2006
Schwannoma is tumor of peripheral nerves, originating from Schwann cells. It is a rare nerve sheath tumor, which frequently occurs in the intracranial acoustic nerve and spinal nerves. We report on a 28-year-old woman who suffered from a large pelvic mass that was diagnosed to be sacrococcygeal schwannoma. The features ...
Sanahuja Jordi - - 2005
OBJECTIVE: To describe a large family with hereditary neuropathy with liability to pressure palsies associated with central nervous system demyelination. DESIGN: We examined the 18 members of a pedigree. Genetic analysis was performed on 15 subjects, standard nerve conduction studies on 10 subjects, and brain magnetic resonance imaging studies on ...
Pungavkar S A - - 2005
Optic nerve glioma is the most common primary neoplasm of the optic nerve in childhood. It can extend intracranially along the optic pathway (optic pathway glioma). The lesion tends to present with decreased visual acuity in the affected eye, but can cause additional symptoms when it is large. Local involvement ...
Lynch Shannon C - - 2005
An 83-year-old woman presented with right trigeminal paresthesias, upper lid ptosis, and diplopia and was found to have a right third cranial nerve palsy. MRI disclosed a right sphenocavernous mass with speckled high signal on pre-contrast T1 and correspondingly low signal on T2. Endoscopic sphenoidotomy revealed malignant melanoma. The patient ...
Kim Jae Hyoung - - 2005
PURPOSE: To our knowledge, there has been no report of ophthalmologic findings related with a duplicated abducens nerve in the ophthalmic literature. This study reports such findings. METHODS: An ophthalmologic examination was performed in one patient with a duplicated abducens nerve, revealed with thin-sectioned magnetic resonance imaging (MRI) across the ...
Suryanarayanan R - - 2005
Secondary deposits in the temporal bone are uncommon but well recognized. Such tumours may involve the facial nerve by direct extension of the destructive process into the fallopian canal. We present a rare case of metastasis from a breast carcinoma in the facial nerve itself, involving the nerve in the ...
Castillo Mauricio - - 2005
The educational objectives of this continuing medical education activity are to describe the normal anatomy of the brachial plexus, to name the most common symptoms associated with a brachial plexopathy, to describe the most common imaging findings resulting from trauma to the brachial plexus, to describe the imaging manifestations of ...
Sirikci Akif - - 2005
In this study, we aimed to assess anatomical relationship between the anterior inferior cerebellar artery (AICA) and cochleovestibular nerve (CNV) in patients with non-specific cochleovestibular symptoms using magnetic resonance imaging (MRI). One-hundred and forty patients with non-specific neuro-otologic symptoms were assessed using cranial and temporal MRI. Classification was performed according ...
Cosan T Erhan - - 2006
The case of a child injured by a knitting needle penetrating transorbitally and intracranially, resulting in carotid cavernous fistula and pontine injury, is reported. After receiving medical and endovascular treatment, the only remaining abnormal neurological manifestation was right peripheral facial nerve palsy. The clinical sequences of events and the demonstration ...
van Ouwerkerk Willem J R - - 2005
OBJECTIVE: Preoperative, reliable detection by ancillary investigations of spinal nerve root avulsions in infants with severe obstetric brachial plexus lesions to avoid ineffective operative repair from deceivingly intact but actually avulsed nerve roots. METHODS: Ten infants were selected with an infrequent, severe dominant C7 lesion, primarily because of the anatomically ...
Dodson Thomas B - - 2005
Nerve injury following mandibular third molar (M3) removal is a rare but serious complication. The purpose of this article is to review the role of currently available imaging technologies to facilitate clinical decision-making in the setting of M3 surgery. Given findings suggestive of high risk for inferior alveolar nerve (IAN) ...
Hernalsteen D - - 2005
We report the magnetic resonance (MR) findings in a male patient presenting with a variant chronic idiopathic demyelinating polyneuropathy (CIDP). He developed a slowly progressive weakness of the right leg associated with sensory dysfunction. Electrophysiologic studies were pathognomonic for a lower limb demyelinating polyneuropathy based on the slowed conduction velocities ...
Trip S Anand - - 2006
Diffusion tensor magnetic resonance imaging (DT-MRI) provides in vivo information about the pathology of multiple sclerosis lesions. Increases in mean diffusivity (MD) and reductions in fractional anisotropy (FA) have been found and may represent axonal disruption. The optic nerve is an ideal structure for study by DT-MRI but previous clinical ...
Fujimoto Takuya - - 2005
A percutaneous technique for visualizing sacral nerve roots is described. A fiberscope was inserted into the subarachnoid space through a sheath that was inserted via a percutaneous lumbar puncture. The sacral nerve roots were identified with endoscopic visualization and x-ray fluoroscopy localization of the endoscope. These images were compared with ...
Monheit Blythe E - - 2005
PURPOSE: To describe the clinical characteristics and course of optic disk edema (ODE) associated with isolated sudden-onset anterior uveitis. DESIGN: Interventional, noncomparative retrospective case series. METHODS: Review of patients with sudden-onset anterior uveitis and concomitant ODE seen in an academic uveitis referral center or a general ophthalmology clinic between August ...
Akiyama Takenori - - 2005
A 38-year-old female presented with a trigeminal neurinoma manifesting as left facial paresthesia. The diagnosis was based on magnetic resonance (MR) imaging findings. Gamma knife radiosurgery (GKR) was performed at another hospital at her request. Fifteen months after the GKR, follow-up MR imaging revealed tumor regrowth causing extensive compression of ...
Stoll Guido - - 2006
Experimental autoimmune neuritis (EAN) represents an animal model of acute inflammatory nerve injury mirroring pathophysiological aspects of the human Guillain-Barré syndrome. In the present study, we for the first time visualized the spatiotemporal evolution of autoimmune nerve injury and recovery by magnetic resonance imaging (MRI) by use of the novel ...
Parry David A - - 2005
OBJECTIVES: To compare magnetic resonance imaging (MRI) to high-resolution computed tomography (HRCT) in the preoperative evaluation of pediatric cochlear implant candidates. METHODS: The charts of pediatric cochlear implant candidates evaluated between July 1, 2000 and November 30, 2003 with an MRI scan of the inner ear were included in the ...
Moster Mark L - - 2005
Optic nerve sheath meningioma is an uncommon tumor of middle age. Patients most often present with progressive visual loss, mild proptosis, and, occasionally, ocular motility defect. With modern neuroimaging, these tumors are relatively easy to diagnose. However, the computed tomography scan or magnetic resonance imaging scan obtained must be a ...
Meng Liu - - 2005
We studied the clinical characteristics of cerebellopontine angle (CPA) epidermoids presenting with trigeminal neuralgia (TN). Twenty-four patients were analyzed retrospectively and the literature reviewed with regard to clinical manifestation, imaging features, surgical procedures and prognosis. TN may be the initial symptom of CPA epidermoid, particularly in young patients. Epidermoids are ...
Purvin Valerie - - 2005
A 61-year-old man experienced severe bilateral posterior ischemic optic neuropathy after cardiac bypass surgery. Routine magnetic resonance imaging sequences were normal, but diffusion-weighted and fluid-attenuated inversion recovery (FLAIR) sequences showed abnormal hyperintensity within both intra-orbital optic nerves. This imaging abnormality has not been previously reported in this setting.
Pollack Anta G - - 2005
The authors describe an acute facial and acoustic neuropathy following gamma knife surgery (GKS) for vestibular schwannoma (VS). This 39-year-old woman presenting with tinnitus underwent GKS for a small right-sided intracanalicular VS, receiving a maximal dose of 26 Gy and a tumor margin dose of 13 Gy to the 50% ...
Eggers G - - 2005
OBJECTIVES: Magnetic resonance imaging (MRI) is not routinely used for dental implant planning. A prerequisite for dental implant planning is the accurate imaging of risk structures like the mandibular nerve. The geometric accuracy of the imaging of the mandibular nerve was investigated. METHODS: Two human cadaver heads were scanned using ...
Leeman Stephanie A - - 2005
Neurofibromatosis is a disease that occurs in both males and females of all races and ethnic groups. It is inherited as a dominant disorder but can also occur as a new mutation. Neurofibromatosis was formerly considered a single disorder with at least two variations. However, it is currently known to ...
Hourani Roula - - 2005
OBJECTIVE: To determine the incidence of dehiscence between the vestibular aqueduct and the jugular bulb on computed tomography (CT) scans and assess its implication as a cause of dizziness or hearing loss. METHODS: Two hundred temporal bone CT scans were evaluated for the prevalence of dehiscence between the jugular bulb ...
Couturier Laurent - - 2005
Twenty-two magnetic resonance imaging (MRI) brain studies of different breeds of dogs were reviewed to assess the anatomy of cranial nerve (CN) origins and associated skull foramina. These included five anatomic studies of normal brains using 2-mm-thick slices and 17 studies using conventional clinical protocols with 3- or 4-mm slices ...
Tanaka Tatsurou - - 2005
OBJECTIVE: To evaluate the utility of magnetic resonance (MR) cisternography using 3-dimensional (3D) fast asymmetric spin-echo (FASE) sequences with multiplanar reconstruction (MPR) for detection of the sites of neurovascular compression (NVC) in patients with trigeminal neuralgia. STUDY DESIGN: Both MR cisternography with 3D-FASE sequences and MR angiography (MRA) were performed ...
Maraziotis Theodoros - - 2005
The authors report two cases of neurilemoma localised in the popliteal fossa. Both patients experienced non-specific symptoms, such as painful numbness and burning dysaesthesia, involving the lower extremity. Tinel's sign was positive over the popliteal fossa. The patients sought medical advice and underwent conservative treatment without any relief, for a ...
Chen C-C - - 2005
Isolated third cranial nerve palsies in head trauma patients can be the result of direct or indirect damage to the oculomotor nerve. They are usually associated with severe head trauma. We reported a case of isolated oculomotor nerve palsy associated with minor head injury. No initial loss of consciousness was ...
< 6 7 8 9 10 11 12 13 14 15 16 >