نتایج جستجو برای: weighted magnetic resonance imaging

تعداد نتایج: 816642  

Journal: :Polish journal of veterinary sciences 2013
Y Zhalniarovich Z Adamiak A Pomianowski M Jaskólska

Magnetic resonance imaging is the best imaging modality for the brain and spine. Quality of the received images depends on many technical factors. The most significant factors are: positioning the patient, proper coil selection, selection of appropriate sequences and image planes. The present contrast between different tissues provides an opportunity to diagnose various lesions. In many clinics...

2017
Xiaoyue Ma Yan Bai Yusong Lin Xiaohua Hong Taiyuan Liu Lun Ma E Mark Haacke Jinyuan Zhou Jian Wang Meiyun Wang

Amide proton transfer (APT) imaging is a noninvasive molecular magnetic resonance imaging (MRI) technique based on the chemical exchange-dependent saturation transfer mechanism. The purpose of this study was to investigate the diagnostic performance of APT MRI in detecting intracranial hemorrhage (ICH) at hyperacute, acute and subacute stages by comparing with susceptibility weighted imaging (S...

2017
Lina A. Basal Yan Yan Yimin Shen E. Mark Haacke Mohammad Mehrmohammadi Matthew J. Allen

We report, for the first time, a multimodal, oxidation-responsive contrast agent for magnetic resonance imaging and photoacoustic imaging that uses the differences in the properties between Eu in the +2 and +3 oxidation states. The enhancement of contrast in T1-weighted magnetic resonance and photoacoustic imaging was observed in the +2 but not in the +3 oxidation state, and the complex is a kn...

2011
Asam Raja Jonathon R Walker Maneesh Sud Joe Du Matthew Zeglinski Andrew Czarnecki Negareh Mousavi Davinder S Jassal Iain DC Kirkpatrick

INTRODUCTION Congenital pericardial cysts are benign lesions that arise from the pericardium during embryonic development. The diagnosis is based on typical imaging features, but atypical locations and signal magnetic resonance imaging sequences make it difficult to exclude other lesions. Diffusion-weighted magnetic resonance imaging is a novel method that can be used to differentiate tissues b...

2014
Bengt Edvardsson

INTRODUCTION Hypertensive encephalopathy is one cause of posterior reversible encephalopathy syndrome. Hypertensive encephalopathy and cerebral infarction have only been reported in a few individual case reports. CASE DESCRIPTION A 51-year-old woman presented with hypertensive encephalopathy. T2-weighted images from magnetic resonance imaging showed hyperintense lesions in both occipital and ...

Journal: :Journal of medical case reports 2016
Wei-Hsin Yuan Tai-Chi Lin Jiing-Feng Lirng Wan-You Guo Fu-Pang Chang Donald Ming-Tak Ho

BACKGROUND Granular cell tumors are rare neoplasms which can occur in any part of the body. Granular cell tumors of the orbit account for only 3 % of all granular cell tumor cases. Computed tomography and magnetic resonance imaging of the orbit have proven useful for diagnosing orbital tumors. However, the rarity of intraorbital granular cell tumors poses a significant diagnostic challenge for ...

Journal: :Journal of magnetic resonance 2014
Jing-Rebecca Li Hang Tuan Nguyen Dang Van Nguyen Houssem Haddar Julien Coatléven Denis Le Bihan

Diffusion magnetic resonance imaging (dMRI) is an imaging modality that probes the diffusion characteristics of a sample via the application of magnetic field gradient pulses. The dMRI signal from a heterogeneous sample includes the contribution of the water proton magnetization from all spatial positions in a voxel. If the voxel can be spatially divided into different Gaussian diffusion compar...

Journal: :Cancer Imaging 2007
Harriet C. Thoeny

Imaging of salivary gland tumours is a major challenge for radiologists due to the great variety of differential diagnoses. This article gives a short overview on the anatomy of the salivary glands, the epidemiology of salivary gland tumours as well as the clinical presentation and the different imaging modalities including new magnetic resonance techniques such as diffusion-weighted magnetic r...

H. Zhang, J.B. Qin, L. Wang, L. Zhang, l.N. Li, Q.J. Qu, X. Liang, X.C. Wang, X.F. Wu2, Y. Tan,

Neurofibroma of the prostate is an extremely rare benign tumor, particularly when it is not associated with neurofibromatosis-I (NF-1). This study aimed to report the case of a 44-year-old man who presented with dysuria for about 4 years. Magnetic resonance imaging (MRI) showed a mass in the prostate with “target sign” on T2-weighted imaging. The mass was surgically excised, and histopathologic...

Journal: :Ulusal cerrahi dergisi 2015
İdil Güneş Tatar Hasan Aydın Kerim Bora Yılmaz Baki Hekimoğlu

Diffusion-weighted magnetic resonance imaging has emerged as a successful technique in the early diagnosis of acute pancreatitis. An 82-year-old male patient suspected of acute pancreatitis refused to undergo intravenous contrast-enhanced abdominal computed tomography due to a history of previous allergic reactions to contrast medium. He was imaged with diffusion-weighted magnetic resonance ima...

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