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Neuroradiology Journal

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https://www.readbyqxmd.com/read/28632041/automated-volumetry-of-hippocampus-is-useful-to-confirm-unilateral-mesial-temporal-sclerosis-in-patients-with-radiologically-positive-findings
#1
Guilherme Silva, Cristina Martins, Nádia Moreira da Silva, Duarte Vieira, Dias Costa, Ricardo Rego, José Fonseca, João Paulo Silva Cunha
Background and purpose We evaluated two methods to identify mesial temporal sclerosis (MTS): visual inspection by experienced epilepsy neuroradiologists based on structural magnetic resonance imaging sequences and automated hippocampal volumetry provided by a processing pipeline based on the FMRIB Software Library. Methods This retrospective study included patients from the epilepsy monitoring unit database of our institution. All patients underwent brain magnetic resonance imaging in 1.5T and 3T scanners with protocols that included thin coronal T2, T1 and fluid-attenuated inversion recovery and isometric T1 acquisitions...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28631996/role-of-diffusion-weighted-imaging-in-skull-base-lesions-a-pictorial-review
#2
Neetu Soni, Nishant Gupta, Yogesh Kumar, Manisha Mangla, Rajiv Mangla
Skull base lesions can be related to wide number of pathologies including infections, benign and malignant tumors. Accurate diagnosis and differentiation between these entities is important for prompt and appropriate treatment. However, computed tomography and routine magnetic resonance imaging techniques only provide information on the extent of the lesions, with limited ability to differentiate between benign and malignant lesions. Diffusion-weighted imaging can help in many such situations by providing additional information, including help in differentiating benign from malignant lesions, so that appropriate treatment can be initiated...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28631971/rapidly-progressive-dementia-an-unusual-cause
#3
Aastha Takkar, Veenu Singla, Manish Modi, Vivek Gupta, Manoj K Goyal, Vivek Lal
Brain metastases are known to be present with a history of increased intra-cranial pressure headache, seizures or altered sensorium. Corresponding to the clinical brain metastases are the most feared complication of a systemic cancer. Classically, brain metastases are associated with significant morbidity and are known to present with a history of increased intracranial pressure headache, seizures or altered sensorium. Neuroimaging is usually suggestive of massive peri-lesional edema and mass effect surrounding the space occupying lesions...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28631949/diffusion-tensor-imaging-tensor-shape-analysis-for-assessment-of-regional-white-matter-differences
#4
Dana M Middleton, Jonathan Y Li, Hui J Lee, Steven Chen, Patricia I Dickson, N Matthew Ellinwood, Leonard E White, James M Provenzale
Purpose The purpose of this study was to investigate a novel tensor shape plot analysis technique of diffusion tensor imaging data as a means to assess microstructural differences in brain tissue. We hypothesized that this technique could distinguish white matter regions with different microstructural compositions. Methods Three normal canines were euthanized at seven weeks old. Their brains were imaged using identical diffusion tensor imaging protocols on a 7T small-animal magnetic resonance imaging system...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28631535/high-resolution-magnetic-resonance-imaging-for-exposing-facial-nerve-zonal-vulnerability-to-microbleeds-a-rare-cause-of-facial-palsy
#5
Charlie Chia-Tsong Hsu, Dalveer Singh, Trevor William Watkins, Gigi Nga Chi Kwan, Sachintha Hapugoda
Background We report a case of hypertensive microbleeds strategically located at the attached segment (AS) and root entry zone (REZ) at the left facial nerve causing facial paralysis. Case Report A 60-year-old woman presented with sudden onset left facial paralysis. Medical history was significant for poorly controlled hypertension secondary to bilateral adrenal hyperplasia (primary hyperaldosteronism). The patient was initially treated for presumptive Bell's palsy. Subsequent magnetic resonance imaging of the brain and internal auditory canal showed two microbleeds at the left cerebellopontine angle...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627967/novel-region-of-interest-interrogation-technique-for-diffusion-tensor-imaging-analysis-in-the-canine-brain
#6
Jonathan Y Li, Dana M Middleton, Steven Chen, Leonard White, N Matthew Ellinwood, Patricia Dickson, Charles Vite, Allison Bradbury, James M Provenzale
Purpose We describe a novel technique for measuring diffusion tensor imaging metrics in the canine brain. We hypothesized that a standard method for region of interest placement could be developed that is highly reproducible, with less than 10% difference in measurements between raters. Methods Two sets of canine brains (three seven-week-old full-brains and two 17-week-old single hemispheres) were scanned ex-vivo on a 7T small-animal magnetic resonance imaging system. Strict region of interest placement criteria were developed and then used by two raters to independently measure diffusion tensor imaging metrics within four different white-matter regions within each specimen...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627953/role-of-diffusion-weighted-imaging-in-head-and-neck-lesions-pictorial-review
#7
Neeraj Bhatt, Nishant Gupta, Neetu Soni, Kusum Hooda, Joshua M Sapire, Yogesh Kumar
Head and neck cancers are very common worldwide, causing significant morbidity and mortality. Squamous cell carcinoma originating from the epithelial lining of the upper aerodigestive tract is the most common histology. Many patients with head and neck cancers present with advanced stage disease requiring aggressive treatment consisting of extensive surgery and chemo-radiation. Appropriate treatment planning as well as prognosis of tumors depends to a large extent on accurate histological diagnosis and differentiation of malignant from benign lesions...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28463092/assessment-of-cerebral-microbleeds-by-susceptibility-weighted-imaging-in-alzheimer-s-disease-patients-a-neuroimaging-biomarker-of-the-disease
#8
Gianvincenzo Sparacia, Francesco Agnello, Giuseppe La Tona, Alberto Iaia, Federico Midiri, Benedetta Sparacia
Purpose The objective of this study was to correlate the presence and distribution of cerebral microbleeds in Alzheimer's disease patients with cerebrospinal fluid biomarkers (amyloid-beta and phosphorylated tau 181 protein levels) and cognitive decline by using susceptibility-weighted imaging magnetic resonance sequences at 1.5 T. Material and methods Fifty-four consecutive Alzheimer's disease patients underwent brain magnetic resonance imaging at 1.5 T to assess the presence and distribution of cerebral microbleeds on susceptibility-weighted imaging images...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28452571/comparison-of-diffusion-weighted-imaging-and-enhanced-t1-weighted-sequencing-in-patients-with-multiple-sclerosis
#9
Amin Abolhasani Foroughi, Roohollah Salahi, Alireza Nikseresht, Hora Heidari, Masoume Nazeri, Ali Khorsand
Introduction The purpose of this study was to assess whether demographic, brain anatomical regions and contrast enhancement show differences in multiple sclerosis (MS) patients with increased diffusion lesions (ID group) compared with diffusion restriction (DR group). Method MRI protocol comprised T1- and T2-weighted sequences with and without gadolinium (Gd), and sagittal three-dimensional FLAIR sequence, DWI and ADC maps were prospectively performed in 126 MS patients from January to December 2015. The investigation was conducted to evaluate differences in demographic, cord and brain regional, technical, and positive or negative Gd contrast imaging parameters in two groups of ID and DR...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28379049/a-case-of-epilepsy-in-multiple-sclerosis-three-dimensional-double-inversion-recovery-sequences-revealed-cortical-dysplasia
#10
Domenico S Zimatore, Mirko Trentadue, Marco Castellaro, Monica Ferlisi, Enrico Piovan, Massimiliano Calabrese
In epileptic patients with multiple sclerosis (MS), cortical lesions have been suggested to cause seizures. In brain magnetic resonance imaging (MRI), double inversion recovery (DIR) sequences are generally used to evaluate MS cortical disease burden. We present the case of a woman, diagnosed with MS, suffering from drug-resistant partial seizures initially attributed to MS. The patient underwent many MRI exams, but only by means of high-resolution three-dimensional DIR sequences was a focal cortical dysplasia discovered...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28353416/resting-state-fmri-a-review-on-methods-in-resting-state-connectivity-analysis-and-resting-state-networks
#11
K A Smitha, K Akhil Raja, K M Arun, P G Rajesh, Bejoy Thomas, T R Kapilamoorthy, Chandrasekharan Kesavadas
The inquisitiveness about what happens in the brain has been there since the beginning of humankind. Functional magnetic resonance imaging is a prominent tool which helps in the non-invasive examination, localisation as well as lateralisation of brain functions such as language, memory, etc. In recent years, there is an apparent shift in the focus of neuroscience research to studies dealing with a brain at 'resting state'. Here the spotlight is on the intrinsic activity within the brain, in the absence of any sensory or cognitive stimulus...
August 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627990/systemic-metastases-from-central-nervous-system-ependymoma-case-report-and-review-of-the-literature
#12
Claudia Marsecano, Federico Bruno, Giulia Michelini, Marco Perri, Giuseppe Calvisi, Ernesto Di Cesare, Alessandra Splendiani
Ependymal tumours in adults are rare, accounting for less than 4% of primary tumours of the central nervous system, and exceptionally metastasise outside the nervous system. In this study, we present a case of anaplastic ependymoma, which developed metastases outside the nervous system less than a year after its clinical onset. A healthy 65-year-old woman suddenly presented with drowsiness of unknown origin, accompanied by ingravescent fatigue, inability to maintain the upright posture, headache, nausea and vomiting...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627989/computed-tomography-detection-of-extracapsular-spread-of-squamous-cell-carcinoma-of-the-head-and-neck-in-metastatic-cervical-lymph-nodes
#13
Joshua A Carlton, Adam W Maxwell, Lyndsey B Bauer, Sara M McElroy, Lester J Layfield, Humera Ahsan, Ajay Agarwal
Background and purpose In patients with squamous cell carcinoma of the head and neck (HNSCC), extracapsular spread (ECS) of metastases in cervical lymph nodes affects prognosis and therapy. We assessed the accuracy of intravenous contrast-enhanced computed tomography (CT) and the utility of imaging criteria for preoperative detection of ECS in metastatic cervical lymph nodes in patients with HNSCC. Materials and methods Preoperative intravenous contrast-enhanced neck CT images of 93 patients with histopathological HNSCC metastatic nodes were retrospectively assessed by two neuroradiologists for ECS status and ECS imaging criteria...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627988/pharyngeal-amyloidomas-variable-appearance-on-imaging
#14
C A Prause, Q Zhai, S M Weindling
Amyloidomas are rare tumor-like depositions of abnormally folded, insoluble proteins that may be seen in the setting of systemic amyloidosis or as isolated tumoral deposits. Focal, isolated amyloidomas carry an excellent prognosis whereas systemic amyloidoses do not. The ability to identify or suggest amyloidoma on imaging studies may help direct laboratory testing and eventual diagnosis. Amyloidomas involving the head and neck have been variably described from homogeneously T2 hypointense to iso-slightly hyperintense relative to skeletal muscle...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627987/computerised-tomography-and-magnetic-resonance-imaging-of-laryngeal-squamous-cell-carcinoma-a-practical-approach
#15
Francesco Agnello, Francesco Cupido, Gianvincenzo Sparacia, Federico Midiri, Martina Miroddi, Emanuele Grassedonio, Massimo Galia
Squamous cell carcinoma is the most common head and neck cancer. This review describes the state-of-the-art computerised tomography and magnetic resonance imaging protocols of the neck and the normal larynx anatomy, and provides a practical approach for the diagnosis and staging of laryngeal squamous cell carcinoma.
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627986/obituary
#16
(no author information available yet)
No abstract text is available yet for this article.
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627985/diagnostic-performance-of-reformatted-isotropic-thin-section-helical-ct-images-in-the-detection-of-superior-semicircular-canal-dehiscence
#17
Gianvincenzo Sparacia, Alberto Iaia
Purpose The purpose of this article is to assess the diagnostic performance of computed tomography (CT) reformatted images for detection of superior semicircular canal (SSC) dehiscence. Material and methods Forty-two patients, with sound- and/or pressure-induced vestibular symptoms, and 42 control participants underwent helical CT examination with a highly collimated beam (0.5 mm). Reformatted images of the vestibular labyrinth were obtained in the standard axial and coronal planes (group A images), and in a plane parallel and perpendicular to the SSC (group B images)...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627984/diagnostic-accuracy-of-proton-magnetic-resonance-spectroscopy-and-perfusion-weighted-imaging-in-brain-gliomas-follow-up-a-single-institutional-experience
#18
Monica Anselmi, Alessia Catalucci, Valentina Felli, Valentina Vellucci, Alessandra Di Sibio, Giovanni Luca Gravina, Mario Di Staso, Ernesto Di Cesare, Carlo Masciocchi
Objectives The objective of this study was to evaluate whether proton magnetic resonance spectroscopy and perfusion magnetic resonance imaging (MRI) are able to increase diagnostic accuracy in the follow-up of brain gliomas, identifying the progression of disease before it becomes evident in the standard MRI; also to evaluate which of the two techniques has the best diagnostic accuracy. Methods Eighty-three patients with cerebral glioma (50 high-grade gliomas (HGGs), 33 low-grade gliomas (LGGs)) were retrospectively enrolled...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28627983/susceptibility-weighted-imaging-a-problem-solving-tool-in-differentiation-of-cerebellopontine-angle-schwannomas-and-meningiomas
#19
Atul Mishra, Bejoy Thomas, T R Kapilamoorthy
Background and purpose Vestibular schwannomas and meningiomas of the cerebellopontine angle can be differentiated by the presence of foci of blooming on susceptibility weighted imaging. Materials and methods In this retrospective study, magnetic resonance imaging with susceptibility weighted imaging sequence in addition to other routine sequences was done in 73 patients. All the cases were studied for the presence of foci of blooming within the tumor on susceptibility weighted imaging. Histopathological examination confirmed the diagnosis in all cases...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28423980/multiple-myeloma-of-the-spine
#20
Arian Lasocki, Frank Gaillard, Simon J Harrison
Radiology provides a crucial clinical adjunct in patients with plasma cell disorders, in particular multiple myeloma, and its uses are evolving and expanding. This pictorial review illustrates the role of imaging throughout the patient's clinical course, with specific reference to recently updated international diagnostic criteria. At presentation, imaging optimises characterisation and staging of the plasma-cell disorder, while later in the course of the disease, its roles include the monitoring of disease progression, assessment of post-treatment response and the investigation of clinical deterioration...
June 2017: Neuroradiology Journal
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