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Lassen-Ramshad Yasmin - - 2011
Abstract Introduction. The concern of secondary cancer induction and normal tissue complications have motivated a more frequent use of protons in radiotherapy (RT) of children. However, proton RT is likely to be less robust to anatomical changes occurring during therapy. In this study we present a recent clinical case to ...
Song Mee Hyun - - 2011
To analyze the value of preoperative diagnostic tools in predicting the status of the cochleovestibular nerve (CVN) in patients with narrow internal auditory canals (IAC). Retrospective case series at a tertiary hospital. Eight profoundly deaf patients with narrow IACs who received auditory brainstem implantation were included in this study. The ...
Ouyang Yanling - - 2011
To study the spatial distribution of posterior pole choroidal thickness (CT) in healthy eyes using spectral domain optical coherence tomography (SD-OCT). Fifty-nine eyes from 30 subjects with no retinal or choroidal disease were examined with high-definition (HD) OCT using macular volume cube scanning protocols. A randomly chosen subset also had ...
Haenold Ronny - - 2011
Traditionally, depiction of isolated CNS fiber tracts is achieved by histological post mortem studies. As a tracer-dependent strategy, the calcium analog manganese has proved valuable for in vivo imaging of CNS trajectories, particularly in rats. However, adequate protocols in mice are still rare. To take advantage of the numerous genetic ...
Faridian-Aragh Neda - - 2011
The radial nerve is a continuation of the posterior cord of the brachial plexus and one of the major nerves that provide motor and sensory innervations to the forearm. MR imaging evaluation of the radial nerve pathology has been described in scattered case reports. Current high-field MR scanners enable high ...
Mallouhi Ammar - - 2011
Magnetic resonance (MR) neurography comprises an evolving group of techniques with the potential to allow optimal noninvasive evaluation of many abnormalities of the brachial plexus. MR neurography is clinically useful in the evaluation of suspected brachial plexus traumatic injuries, intrinsic and extrinsic tumors, and post-radiogenic inflammation, and can be particularly ...
Prochnau Dirk - - 2011
Myocarditis is an injury of the myocardium caused by a variety of agents. Conduction disturbances such as complete atrioventricular block (AV block) may occur as an infrequent but serious complication of myocarditis. Early detection and accurate diagnosis of myocarditis are still unresolved challenges. We present 2 cases of otherwise mild ...
Anil Gopinathan - - 2011
Nerve sheath tumors arising from the cervical vagus are rare. The purpose of this study was to evaluate the role of CT and MRI in the diagnosis of these uncommon neoplasms. The CT and MR studies and clinical data of 11 patients with surgicopathologic evidence of a nerve sheath tumor ...
Chhabra A - - 2011
Background and Aims: Malignant peripheral nerve sheath tumors (MPNSTs) are the leading cause of mortality in patients with neurofibromatosis type-1 (NF1)); however, they may also arise sporadically. Differences in magnetic resonance imaging (MRI) features between MPNSTs arising in NF1 subjects versus non-NF1 subjects have not been studied before. The accuracy ...
Desai Nilesh K - - 2011
Objectives. Pontine tegmental cap dysplasia (PTCD) is a rare congenital malformation. Clinical and imaging findings in 3 patients and the authors' experience with bilateral cochlear implantation in 1 patient are described. Study Design. Retrospective review. Setting. Two tertiary medical centers. Subjects and Methods. Three patients were evaluated by an otolaryngologist ...
Han Kyeong-Jin - - 2011
Intraneural ganglion cysts of the peripheral nerve in the upper extremity are uncommon and usually originate within the epineurium of the peripheral nerve. The current report discusses a 57-year-old woman with a neuropathic nodular mass on the thenar area of the left hand. Magnetic resonance images showed a lobulated, homogeneous ...
Hettinger Patrick C - - 2011
The purpose of this study is to develop a rodent functional magnetic resonance imaging (fMRI) survival model with the use of heparin-coated vascular access devices. Such a model would ease the administration of sedative agents, reduce the number of animals required in survival experiments and eliminate animal-to-animal variability seen in ...
Lee Chiao-Hua - - 2011
Penile schwannoma is a rare encapsulated nerve sheath tumor of the peripheral nerve in the penis. Here, we report a case of multiple, painful, bead-like, nodular tumors in the penis of a 40-year-old man. The nodules showed well-defined margins and hypoechoic areas on gray-scale ultrasonograms. They showed high signal intensity ...
Shin Keun Man - - 2011
Although the incidence of partial-thickness rotator cuff tears (PTRCTs) was reported to be from 13% to 32% in cadaveric studies, the actual incidence is not yet known. The causes of PTRCTs can be explained by either extrinsic or intrinsic theories. Studies suggest that intrinsic degeneration within the rotator cuff is ...
Sudhakar Padmaja - - 2011
Restricted diffusion in the optic nerve detected with MRI has been previously reported in infarction and inflammation but not in infiltrative neoplasm. We report a 44-year-old man with recently diagnosed non-Hodgkin B-cell lymphoma who developed an acute left optic neuropathy. MRI showed no evidence of brain parenchymal or meningeal lymphoma ...
Ohba Kenji - - 2011
Syndrome of inappropriate secretion of thyrotropin (SITSH) is a clinical state of inappropriately elevated secretion of thyrotropin (TSH) in the presence of elevated free thyroid hormones. Peripheral nerve hyperexcitability (PNH) is a rare disorder characterized by muscle twitching at rest. No relation between them is known. A 49-year-old man was ...
Ventura Elisa - - 2011
Cerebellopontine angle (CPA) lipomas are extremely rare lesions and usually unilateral. We describe a case of a 36-year-old man with bilateral aural fullness that was discovered to have bilateral CPA lipomas associated with an abnormal hindbrain segmentation appearance. The patient was evaluated with 3.0T magnetic resonance imaging (MRI) system. MRI ...
Noble Jack H - - 2011
In recent years, radiation therapy has become the preferred treatment for many types of head and neck tumors. To plan the procedure, vital structures, including the optic nerves and chiasm, must be identified using CT/MR imagery. In this work we present a novel method for automatically localizing the optic nerves ...
Bae Jin-Won - - 2011
In children, Mycoplasma pneumoniae encephalitis has been characterized by acute onset of an encephalopathy associated with extrapyramidal symptoms and symmetric basal ganglia with or without brain stem involvement on magnetic resonance imaging. Our case, showing unilateral optic neuritis, ophthalmoplegia, no extrapyramidal symptoms, and typical striatal involvement on magnetic resonance imaging, ...
Gandhi M R - - 2011
BACKGROUND.: The accurate preoperative identification of the extent of perineural spread (PNS) of malignancy along a cranial nerve is vital to the design of an appropriate surgical resection. Our purpose was to determine the sensitivity of targeted MRI in predicting the presence of disease and the anatomic extent of spread ...
Raza Kazim - - 2011
BACKGROUND AND IMPORTANCE:: We report the case history of solitary hypoglossal paraganglioma in a 64-year-old woman. The surgical difficulties encountered in the removal of this challenging tumor are discussed and as a literature review provided. CLINICAL PRESENTATION:: A 64-year-old woman presented with a short history of dysphonia, occasional dysphagia, tinnitus, ...
Sakushima Ken - - 2011
A 55-year-old man presented with acute onset dysarthria caused by left hypoglossal palsy. He had neither surgery nor injury prior to the onset of his symptoms. We detected no abnormalities with conventional magnetic resonance imaging (MRI) except for a slight gadolinium enhancement of the left hypoglossal nerve. Three-dimensional constructive interference ...
Ambrosini Valentina - - 2011
Lung cancer (LC) still represents one of the most common tumours in both women and men. PET/CT is a whole-body non-invasive imaging procedure that has been increasingly used for the assessment of LC patients. In particular, PET/CT added value to CT is mainly related to a more accurate staging of ...
Vaphiades Michael S - - 2011
Two patients with neuroretinitis are presented, both having MRI abnormalities of the orbital portion of the optic nerve. We review previous reports of CT and MRI findings in patients with neuroretinitis and propose a spectrum of neuroimaging abnormalities in these patients.
Puigdellívol-Sánchez A - - 2011
Three-dimensional (3D) image-reconstruction of structures inside the spinal canal certainly produces relevant data of interest in regional anesthesia. Nowadays, all hospital MRI equipment is designed mainly for clinical diagnostic purposes. In order to overcome the limitations we have produced more accurate images of structures contained inside the spinal canal using ...
Oida Takenori - - 2011
Diffusion tensor imaging (DTI) is a magnetic resonance (MR) imaging technique that has attracted attention in recent years for applications such as nerve fiber tracking, neurography, and tumor detection. In DTI measurements, 2 motion-probing gradient (MPG) pulses are applied to evaluate water diffusion. In DTI for nerve fiber tracking, acquisition ...
Miwa Takako - - 2011
Objective Carpal tunnel syndrome (CTS) severity increases with age. Ultrasonographic measurement of the median nerve cross-sectional area (CSA) is an additional or complementary method for CTS diagnosis. The present study was aimed to investigate the diagnostic significance of median nerve CSA in various age groups of CTS patients. Methods The ...
Szabo Bianca - - 2011
Sarcoidosis is an inflammatory granulomatous disease affecting multiple organ systems. Neurosarcoidosis (central nervous system involvement) is seen in approximately 25% of patients with systemic sarcoidosis, although it is subclinical in most of these cases. Clinical presentations and imaging findings in nervous system were varied. Cranial nerve abnormalities were the most ...
Kawamoto Satomi - - 2011
Solid-pseudopapillary neoplasms of the pancreas are uncommon and usually occur in young women. They are generally large, encapsulated masses with mixture of solid, cystic, and hemorrhagic components. Some cases have atypical features; for example, they can form a small predominantly solid mass and produce dilatation of the main pancreatic duct. ...
Jia Yuxia - - 2011
We describe a case of schwannomatosis presenting as radicular pain and numbness in multiple radicular nerve distributions. There were multiple peripheral nerve tumors detected by magnetic resonance imaging (MRI) at the left vestibular nerve, cauda equina, right radial nerve, thoracic paraspinal nerve, and brachial plexi. Several resected tumors have features ...
Mittal Puneet - - 2011
Combined clinical presentation of hemifacial spasm and ipsilateral trigeminal neuralgia is also known as painful tic convulsif (PTC). It is a rare condition and the most common cause is vascular compression. Vertebrobasilar dolichoectasia (VBD) is characterized by dilated and tortuous vertebral and basilar arteries. VBD is an uncommon and rarely ...
Ginat Daniel T DT University of Rochester, Department of Imaging Science, Rochester, NY, - - 2011
Neurosarcoidosis is an uncommon condition with protean manifestations. Magnetic resonance imaging (MRI) is often used in the diagnostic evaluation and follow-up of patients with neurosarcoidosis. Therefore, familiarity with the variety of MRI appearances is important. In this pictorial essay, the range of possible patterns of involvement in neurosarcoidosis are depicted ...
D'Urso Pietro Ivo PI Neurosurgery Operative Unit, Department of Neuroscience, 'G Rummo' Hospital, Benevento, Italy. - - 2011
Intracranial schwannomas unrelated to the cranial nerves are uncommon. We report a new case of tentorial schwannoma unrelated to the cranial nerves, with extension into the pons. A literature review with discussion of the most relevant pathogenetic aspects is also performed. A 42-year-old Caucasian man was admitted with right-sided paresthesias ...
Saudek Frantisek - - 2010
In vitro labeling of pancreatic islets by iron nanoparticles enables their detection as hypoitnense spots on serial magnetic resonance (MR) images. We report the first results of a pilot trial aiming to test the feasibility and safety of this technique in humans. Islets were labeled in culture with 5 μL/mL ...
Zhou Jinyuan J Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. - - 2011
It remains difficult to distinguish tumor recurrence from radiation necrosis after brain tumor therapy. Here we show that these lesions can be distinguished using the amide proton transfer (APT) magnetic resonance imaging (MRI) signals of endogenous cellular proteins and peptides as an imaging biomarker. When comparing two models of orthotopic ...
Mjåset Christer - - 2010
A 50-year-old woman had a gradual onset of chronic headache located in the right temporal region and a burning sensation in the root of the tongue which over a year evolved into chronic cluster headache with a milder chronic headache in-between the severe cluster headache attacks. A cerebral magnetic resonance ...
Yang Jun - - 2011
The mineralocorticoid receptor (MR) is a member of the nuclear receptor superfamily. Pathological activation of the MR causes cardiac fibrosis and heart failure, but clinical use of MR antagonists is limited by the renal side effect of hyperkalemia. The glucocorticoid cortisol binds the MR with equivalent affinity to that of ...
Steinborn M - - 2011
We performed a cadaver study to evaluate the accuracy of measurements of the optic nerve and the optic nerve sheath for high resolution US (HRUS) and magnetic resonance imaging (MRI). Five Thiel-fixated cadaver specimens of the optic nerve were examined with HRUS and MRI. Measurements of the optic nerve and ...
Kermarrec Erwan - - 2010
High-resolution ultrasound (US) and magnetic resonance (MR) imaging are the two imaging methods of choice for the study of peripheral nerves. The many advances that have been made in recent years, either by US or MR imaging, including diffusion tensor imaging and tractography, offer new perspectives for the assessment of ...
Beltran Luis S - - 2010
Clinicians frequently encounter compressive neuropathies of the lower extremity. The clinical history and physical examination, along with electrodiagnostic testing and imaging studies, lead to the correct diagnosis. The imaging characteristics of the compression neuropathies can include acute and chronic changes in the nerves and the muscles they innervate. We provide ...
Fernández-de-Las-Peñas César - - 2010
Case-control study with blinded examiner. To investigate if pressure pain sensitivity is related to specific nerve trunks in the upper extremity of patients with either unilateral lateral epicondylalgia (LE) or carpal tunnel syndrome (CTS). In the clinical setting, patients with LE tend to exhibit radial nerve trunk tenderness, whereas patients ...
Martinoli Carlo - - 2010
Ultrasound (US) and MR imaging have been shown able to detect in-depth features of brachial plexus anatomy and to localize pathological lesions in disorders where electrophysiology and physical findings are nonspecific or nonlocalizing. High-end gradient technology, phased array coils, and selection of an appropriate protocol of pulse sequences are the ...
Hébert-Blouin Marie-Noëlle - - 2010
Foot drop, the clinical manifestation of tibialis anterior (TA) muscle dysfunction, may be caused by pathologies involving selectively the TA motor nerve branches. Recently, in patients with fibular intraneural ganglion cysts, cystic involvement of the TA motor branch from the articular branch was demonstrated. However, no imaging characteristics of this ...
Tagliafico Alberto - - 2010
Traumatic injury to peripheral nerves is a significant cause of morbidity and disability. Until reinnervation occurs, electrodiagnostic studies cannot differentiate severe axonotmetic lesions (Sunderland class 4) from complete nerve transection or neurotmesis (Sunderland class 5). This limitation is relevant clinically because in cases of neurotmesis an improved outcome may be ...
Woertler Klaus - - 2010
The diagnosis of a peripheral nerve tumor can often be suggested on imaging. Direct continuity with a neural structure or location along a typical nerve distribution, shape, and intrinsic magnetic resonance (MR) signal characteristics represent the most important signs in this regard. Although several nonneoplastic nerve lesions can be specifically ...
Kim Si Hong - - 2010
In treating schwannoma patients, it is critical to determine the origin of the tumor to preserve nerve function. We evaluated the validity of preoperative imaging studies in distinguishing the neurological origin of the schwannomas of the head and neck, and the efficacy of intracapsular enucleation in preserving nerve function. In ...
Thawait S K - - 2011
SUMMARY: High-resolution MR imaging of peripheral nerves is becoming more common and practical with the increasing availability of 3T magnets. There are multiple reports of MR imaging of peripheral nerves in compression and entrapment neuropathies. However, there is a relative paucity of literature on MRN appearance of diffuse peripheral nerve ...
Kinori Michael - - 2011
Isolated cranial mononeuropathies in patients over 50 years of age most commonly result from microvascular ischemic demyelination. A 51-year-old female without vasculopathic risk factors presented with isolated sixth nerve palsy. Magnetic resonance imaging (MRI) of the brain and orbits revealed a cavernous sinus lesion that was diagnosed as a meningioma. ...
Tagliafico Alberto Stefano - - 2011
To describe the potential value of high-resolution sonography for evaluation of the musculocutaneous nerve (MCN). The normal anatomy of the MCN was evaluated on three cadaveric limbs and correlated with the US images obtained in 15 healthy subjects. Seven consecutive patients with MCN neuropathy were then evaluated with sonography using ...
Mulkey Sarah B - - 2010
Guillain-Barré syndrome diagnosis is based on clinical presentation and supportive diagnostic testing. In its early stage, no single, reliable diagnostic test is available. However, a finding of nerve root enhancement on spinal magnetic resonance imaging may be useful. We evaluated the frequency of nerve root enhancement on spinal magnetic resonance ...
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