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Magnetic Resonance Imaging Findings (magnetic + resonance_imaging_finding)
Selected AbstractsCranial Magnetic Resonance Imaging Findings in Patients With MigraineHEADACHE, Issue 2 2004Eren Gozke MD Objective.,To investigate the frequency of cranial magnetic resonance imaging abnormalities in patients with migraine and their relationship to type, duration, and frequency of migraine attacks. Methods.,Forty-five patients (43 women, 2 men) with migraine whose ages ranged between 19 and 53 years (mean, 40.91 [SD, 7.69]) were evaluated. Of the 45 patients, 20 had migraine with aura and 25 had migraine without aura, according to the diagnostic criteria of the International Headache Society. Results.,In 13 (28.8%) of 45 patients, white matter foci were present on magnetic resonance imaging. Eight of these patients (61.5%) had migraine with aura, and 5 patients (38.4%) had migraine without aura. The presence of white matter foci was significantly higher in the patients with aura (8 [40%] of 20) than in those without aura (5 [20%] of 25). It was found that as the frequency of attacks per month increased, the number of patients with white matter foci also increased. Although the mean duration of migraine was longer in patients with white matter foci (149.5 months [SD, 87.9]) than in those without white matter foci (134.1 months [SD, 88.3]), there was no significant difference (P > .05). Conclusion.,Although there are no specific magnetic resonance imaging findings peculiar to migraine, detection of white matter foci should be taken into consideration in patients with migraine (especially migraine with aura). Frequency of attacks is an important indicator of existence of white matter foci. [source] Magnetic resonance imaging findings in a population-based cohort of children with cerebral palsyDEVELOPMENTAL MEDICINE & CHILD NEUROLOGY, Issue 1 2009MARNIE N ROBINSON MBBS The purpose of this study was to investigate the frequency and spectrum of magnetic resonance imaging (MRI) abnormalities in a population of children with cerebral palsy (CP) who were born in the years 2000 and 2001 in Victoria, Australia. In 2000 and 2001, 221 children (126 males, 95 females; mean age 6y [SD 7mo], range 5,7y) with CP, excluding those with CP due to postneonatal causes (6% of all cases), were identified through the Victorian Cerebral Palsy Register. All medical records were systematically reviewed and all available brain imaging was comprehensively evaluated by a single senior MRI radiologist. MRI was available for 154 (70%) individuals and abnormalities were identified in 129 (84%). The study group comprised 88% with a spastic motor type CP; the distribution was hemiplegia in 33.5%, diplegia in 28.5%, and quadriplegia in 37.6% of children. Overall, pathological findings were most likely to be identified in children with spastic hemiplegia (92%) and spastic quadriplegia (84%). Abnormalities were less likely to be identified in non-spastic motor types (72%) and spastic diplegia (52%). The most common abnormalities identified on MRI were periventricular white matter injury (31%), focal ischaemic/haemorrhagic lesions (16%), diffuse encephalopathy (14%), and brain malformations (12%). Dual findings were seen in 3% of patients. This is the first study to document comprehensively the neuroimaging findings of all children identified with CP born over a consecutive 24-month period in a large geographical area. [source] The use of magnetic resonance imaging in the management of pharyngeal penetration injuries in dogsJOURNAL OF SMALL ANIMAL PRACTICE, Issue 2 2008M. J. Dobromylskyj Objectives: To investigate the correlation between the magnetic resonance imaging findings and subsequent surgical findings for a series of dogs presenting with suspected pharyngeal stick injuries to the Animal Health Trust, Newmarket, between 1995 and 2004. Methods: Magnetic resonance imaging findings were reviewed for patients undergoing a scan of the pharyngeal or cervical area for suspected foreign bodies during the years 1995 to 2004. Results: Case signalment, history and clinical signs were similar to those reported in previous studies. Magnetic resonance imaging demonstrated foreign material in six of seven cases where this was present. There was good correlation between diagnosis of a foreign body at magnetic resonance imaging and subsequent surgical identification. Clinical Significance: Compared with other imaging modalities, magnetic resonance imaging is very helpful for this type of injury, especially in chronic cases where radiographic evidence of a foreign body is unlikely. It is a valuable aid in the diagnosis of pharyngeal penetration injury and in surgical planning. [source] Congenital retropharyngeal goiter in a newborn as a magnetic resonance imaging findingPEDIATRICS INTERNATIONAL, Issue 4 2001Nazan Dalgiç No abstract is available for this article. [source] Late clinical, plain X-ray and magnetic resonance imaging findings in haemophilic joints treated with radiosynoviorthesisHAEMOPHILIA, Issue 6 2000R. Nuss The clinical, plain X-ray and magnetic resonance imaging (MRI) findings were studied in 13 haemophilic joints previously treated with radiosynoviorthesis. 32P had been injected into the joints at a median of 16 years earlier in an attempt to halt recurrent haemorrhage. Prior to 32P injection, the majority of joints demonstrated bone damage evident on plain X-ray, secondary to recurrent haemorrhage. At the follow-up evaluation we found plain X-rays were adequate to identify cysts, erosions and cartilage loss in these very damaged joints. MRI was superior to clinical examination and plain X-ray in identifying synovial hyperplasia and effusions. [source] Diffuse idiopathic skeletal hyperostosis-induced dysphagia or DISHphagiaINTERNATIONAL JOURNAL OF RHEUMATIC DISEASES, Issue 2 2005Salih OZGOCMEN Summary Dysphagia related to osteophyte compression in diffuse idiopathic skeletal hyperostosis (DISH) or Forestier's disease and in cervical spondylosis has been identified as a cause of dysphagia. We report an elderly man who had dysphagia due to DISH or namely DISHphagia. Clinical findings, barium esophagogram, and magnetic resonance imaging findings have been presented. Good response to medical treatment with liquid forms of NSAIDs and soft diet has been achieved. [source] Prediction of extraprostatic extension by prostate specific antigen velocity, endorectal MRI, and biopsy Gleason score in clinically localized prostate cancerINTERNATIONAL JOURNAL OF UROLOGY, Issue 6 2008Koshiro Nishimoto Objectives: To investigate the clinical value of prostate specific antigen velocity (PSAV) in predicting the extraprostatic extension of clinically localized prostate cancer. Methods: One hundred and three patients who underwent radical prostatectomy for clinically localized prostate cancer were included in the analysis. The correlation between preoperative parameters, including PSA-based parameters, clinical stage, and histological biopsy findings, and the pathological findings were analyzed. Logistic regression analysis was performed to identify a significant set of independent predictors for the local extent of the disease. Results: Sixty-four (60.2%) patients had organ confined prostate cancer and 39 (39.8%) patients had extraprostatic cancer. The biopsy Gleason score, PSA, PSA density, PSA density of the transition zone, and PSAV were significantly higher in the patients with extraprostatic cancer than in those with organ confined cancer. Multivariate logistic regression analysis indicated that the biopsy Gleason score, endorectal magnetic resonance imaging findings, and PSAV were significant predictors of extraprostatic cancer (P < 0.01). Probability curves for extraprostatic cancer were generated using these three preoperative parameters. Conclusions: The combination of PSAV, endorectal magnetic resonance imaging findings, and biopsy Gleason score can provide additional information for selecting appropriate candidates for radical prostatectomy. [source] Subcortical lesions after transient thread occlusion in the rat: T2 -weighted magnetic resonance imaging findings without corresponding sensorimotor deficitsJOURNAL OF MAGNETIC RESONANCE IMAGING, Issue 4 2005Susanne Wegener MD Abstract Purpose To investigate infarct evolution and functional consequences of exclusive subcortical or cortico-subcortical strokes, transient middle cerebral artery occlusion (MCAO) was conducted in Wistar rats. Materials and Methods MCAO was induced in male Wistar rats (260,300 g) for 60 minutes. Lesion volumes and absolute T2 times on magnetic resonance imaging (MRI) were assessed 1 and 14 days after MCAO using a 4.7-T MRI animal scanner in conjunction with functional testing (adhesive tape removal, cylinder test, and ledged beam walking). Results Functional test scores were not distinguishable between sham-operated animals (N = 5) and those with exclusive caudoputaminal infarct (N = 8; group cp), but showed significant deficits in animals with cortico-subcortical infarction (N = 10; group cp+). The cp group had lower absolute T2 times and a more pronounced reduction in T2 lesion volume over time than the subcortical component in the cp+ group. There was no correlation of T2 lesion size or absolute T2 times and functional impairment in either group. Conclusion When judged from functional tests alone, subcortical ischemic lesions may not be diagnosed reliably. Furthermore, T2 -weighted (T2 -w) MRI does not well anticipate functional deficits in primarily striatal lesions. J. Magn. Reson. Imaging 2005;21:340,346. © 2005 Wiley-Liss, Inc. [source] Primary serous papillary carcinoma of the retroperitoneum: magnetic resonance imaging findings with pathologic correlationJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 2007MK Demir SUMMARY The incidence of a primary serous papillary carcinoma of the retroperitoneum is extremely rare. We present a case of the tumour in an adult simulating an adrenal mass with MRI findings and histopathological correlation. [source] Pyogenic abscess complicating a resolving cerebral haematoma secondary to a cavernous haemangioma: Computed tomography and magnetic resonance imaging findingsJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 2 2005AD Borsaru Summary A case is discussed of a brain abscess complicating an intracerebral haemorrhage occurring in a cavernous haemangioma. A young child presented with focal seizures as a result of a large intracerebral haemorrhage, occurring in a cavernous haemangioma. The only clue to the underlying vascular malformation was the presence of an associated developmental venous anomaly. The case was complicated by the development of a brain abscess at the site of the intracranial haematoma. The CT and MRI findings are discussed. [source] Cervical osteochondroma as a cause of spinal cord compression in a patient with hereditary multiple exostoses: Computed tomography and magnetic resonance imaging findingsJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 3 2002Bayram Çirak SUMMARY Spinal cord compression is a rare but extremely serious complication of hereditary multiple exostoses (HME). Imaging of the spine is important for surgical planning and follow up. We present CT and MR findings in a male patient with HME who developed spinal cord compression from a cervical osteochondroma. Complete recovery was achieved following surgery. [source] Pericardial lipoma: Ultrasound, computed tomography and magnetic resonance imaging findingsJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 3 2000Murugasu Puvaneswary SUMMARY Primary tumours of the heart and pericardium are extremely rare. Cardiac lipomas account for only 10% of all primary cardiac tumours. A case of surgically proven pericardial lipoma demonstrated by ultrasound, CT and MRI is presented here. [source] Reversible Cerebellar Lesions Induced by Metronidazole Therapy for Helicobacter PyloriJOURNAL OF NEUROIMAGING, Issue 4 2004Hirono Ito MD ABSTRACT Metronidazole is widely used for chronic or refractory infection and has recently also been used for the treatment of Helicobacter pylori. The authors report the case of a Japanese patient presenting with reversible cerebellar lesions induced by prolonged administration of metronidazole for treatment of H pylori with magnetic resonance imaging findings. Although rare, prolonged and high-dose administration of metronidazole may induce cerebellar lesions. Increased awareness of this phenomenon is important, as these lesions are reversible with discontinuation of this drug. [source] A retrospective study of the MRI findings in 18 dogs with stifle injuriesJOURNAL OF SMALL ANIMAL PRACTICE, Issue 9 2009E. Barrett Objectives:To make an objective assessment of the usefulness of magnetic resonance imaging in the diagnosis of meniscal damage and cranial cruciate ligament disease in the canine stifle by comparing magnetic resonance imaging findings with surgical findings. Methods:Magnetic resonance images of 18 stifles from 18 dogs which had undergone magnetic resonance imaging for the investigation of stifle disease were reviewed. For every stifle, the menisci and cranial cruciate ligaments were assessed according to predetermined criteria. The magnetic resonance imaging findings were compared with the reported surgical findings and the sensitivity, specificity, positive and negative predictive values (PPV and NPV) were calculated using the surgical findings as the gold standard. Kappa analysis was used as an objective measure of agreement between surgical and magnetic resonance imaging findings. For 11 stifles, meniscal evaluation by three different observers was used to measure interobserver agreement using Kappa analysis. Results:Magnetic resonance imaging was demonstrated to be an accurate technique in the detection of meniscal injury (k=0·86), with excellent interobserver agreement (k=0·89 to 1·0). Disruption of cranial cruciate ligament continuity and an increase in ligament intensity were found to be useful criteria in the diagnosis of cranial cruciate ligament rupture. Clinical Significance:Magnetic resonance imaging offers a non-invasive alternative to exploratory surgery in the evaluation of cranial cruciate ligament and meniscal disease. [source] The use of magnetic resonance imaging in the management of pharyngeal penetration injuries in dogsJOURNAL OF SMALL ANIMAL PRACTICE, Issue 2 2008M. J. Dobromylskyj Objectives: To investigate the correlation between the magnetic resonance imaging findings and subsequent surgical findings for a series of dogs presenting with suspected pharyngeal stick injuries to the Animal Health Trust, Newmarket, between 1995 and 2004. Methods: Magnetic resonance imaging findings were reviewed for patients undergoing a scan of the pharyngeal or cervical area for suspected foreign bodies during the years 1995 to 2004. Results: Case signalment, history and clinical signs were similar to those reported in previous studies. Magnetic resonance imaging demonstrated foreign material in six of seven cases where this was present. There was good correlation between diagnosis of a foreign body at magnetic resonance imaging and subsequent surgical identification. Clinical Significance: Compared with other imaging modalities, magnetic resonance imaging is very helpful for this type of injury, especially in chronic cases where radiographic evidence of a foreign body is unlikely. It is a valuable aid in the diagnosis of pharyngeal penetration injury and in surgical planning. [source] Reversible posterior leukoencephalopathy syndrome in a patient with multiple system atrophy: A possible association with oral midodrine treatmentMOVEMENT DISORDERS, Issue 7 2007Joong-Seok Kim MD Abstract We describe a 51-year-old man with a 3-year history of multiple system atrophy, who developed a reversible posterior leukoencephalopathy syndrome (RPLS) after receiving prescription midodrine for therapeutic treatment of orthostatic hypotension. Typical reversible magnetic resonance imaging findings, following treatment with midodrine, suggested a possible relationship between midodrine treatment, supine hypertension, and RPLS, although a cause-and-effect relationship cannot be confirmed. © 2007 Movement Disorder Society [source] Coexistence of movement disorders and epilepsia partialis continua as the initial signs in probable Creutzfeldt,Jakob diseaseMOVEMENT DISORDERS, Issue 9 2005Berril Donmez MD Abstract Movement disorders and epilepsy rarely occur in the early stage of Creutzfeldt,Jakob disease (CJD) but have not been reported concurrently. We report on a 47-year-old patient with probable CJD who presented with generalized chorea and focal dystonia with myoclonic jerks on the right hand. Myoclonic jerks progressed to epilepsia partialis continua within 5 days of admission to the hospital. The diagnosis of our patient was compatible with probable CJD on the basis of clinical course, electroencephalogram, and diffusion-weighted magnetic resonance imaging findings, and presence of 14-3-3 protein in cerebrospinal fluid. To our knowledge, this is the first report of a case developing both movement disorders and epilepsia partialis continua in the early stage of the disease. © 2005 Movement Disorder Society [source] Correlation of magnetic resonance imaging findings and histopathology of lesion distribution of spinal cord sarcoidosis at post-mortemNEUROPATHOLOGY & APPLIED NEUROBIOLOGY, Issue 5 2000K. Yasui [source] Research on aging using brain imaging and cognitive tests over 6 years in 145 healthy elderly subjectsPSYCHOGERIATRICS, Issue 4 2008Hirohide KADA Abstract Background:, Changes over a period of 10 years in the cognitive function, head magnetic resonance imaging findings, and daily life of approximately 300 healthy elderly subjects were determined. As part of the larger 10-year study, changes are reported herein over a period of 6 years for 145 individuals. Methods:, One hundred and forty-five healthy elderly subjects were divided into two groups: (i) those who were 69 years of age or younger at the start of the study (Group A); and (ii) those who were 70 years of age or older (Group B). Results:, Changes over time in Benton's visual retention test (BVRT) and enhanced cued recall (ECR), both of which rely mainly on subjects memorizing figures, were seen in Group B. With the coding test, the results from the second phase (initial test) showed differences according to initial age; in addition, the differences became greater with aging. It appears that work speed is reduced with increasing age. Conclusion:, The results of the BVRT and ECR suggest that enlargement of the Sylvian fissure and atrophy of the temporal lobe are indicators of deterioration of memory. [source] JC virus persistence following progressive multifocal leukoencephalopathy in multiple sclerosis patients treated with natalizumab,ANNALS OF NEUROLOGY, Issue 3 2010Caroline F. Ryschkewitsch MT JC virus (JCV) DNA in the cerebrospinal fluid (CSF) provides the laboratory confirmatory diagnosis of progressive multifocal leukoencephalopathy (PML) in patients whose clinical symptoms and magnetic resonance imaging findings are consistent with PML. The Laboratory of Molecular Medicine and Neuroscience (LMMN), National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), made the confirmatory laboratory diagnosis in 35 multiple sclerosis (MS) patients treated with natalizumab. Thirteen patients had 3 or more CSF samples taken from weeks to months following PML diagnosis. Seven of the 13 patients demonstrated persistence of JCV DNA in the CSF even though all patients experienced immune reconstitution inflammatory syndrome (IRIS), 11 patients had plasma exchange, and 2 had immunoabsorption. Specific anti-JCV antibody was measured in plasma/sera samples from 25 of the 35 patients. Most of the samples showed moderate to high or rising antibody levels from the time of PML diagnosis. However, plasma from 1 patient at or near the time of PML diagnosis had a titer considered seronegative and 2 other plasma samples from patients had titers considered at baseline for seropositivity. In several PML cases, viral persistence and neurological deficits have continued for several years, indicating that once initiated, JCV infection may not entirely clear, even with IRIS. Ann Neurol 2010;68:384,391 [source] Early magnetic resonance imaging findings in patients receiving tissue plasminogen activator predict outcome: Insights into the pathophysiology of acute stroke in the thrombolysis era,ANNALS OF NEUROLOGY, Issue 1 2004Julio A. Chalela MD We measured ischemic brain changes with diffusion and perfusion MRI in 42 ischemic stroke patients before and 2 hours (range approximately 1.5 to 4.5 hours) after standard intravenous tissue plasminogen activator (tPA) therapy. The median time from stroke onset to tPA was 131 minutes. Clinical and MRI variables (change in perfusion and/or diffusion weighted lesion volume) were compared between those with excellent outcome defined as 3-month modified Rankin score (mRS) of 0 to 1 and those with incomplete recovery (mRS >1). In multivariate logististic regression analysis, the most powerful independent predictor for excellent outcome was improved brain perfusion: hypoperfusion volume on mean transit time (MTT) map decrease >30% from baseline to 2-hour post tPA scan (p=0.009; odds ratio [95% confidence interval], 20.7 [2.1-203.9]). Except for age < 70 years, no other baseline clinical or imaging variable was an independent predictor of outcome. We propose MTT lesion volume decrease more than 30% 2 hours after tPA as an early marker of long-term clinical benefit of thrombolytic therapy. [source] The management of penile fracture based on clinical and magnetic resonance imaging findingsBJU INTERNATIONAL, Issue 9 2005Zubayr R. Zaman No abstract is available for this article. [source] | ||||||||||||||||||||||