نتایج جستجو برای: magnetic resonance mr

تعداد نتایج: 452166  

2013
Bongjune Kim Jaemoon Yang Myeonghwan Hwang Jihye Choi Hyun-Ouk Kim Eunji Jang Jung Hwan Lee Sung-Ho Ryu Jin-Suck Suh Yong-Min Huh Seungjoo Haam

Nucleic acid-based aptamers have been developed for the specific delivery of diagnostic nanoprobes. Here, we introduce a new class of smart imaging nanoprobe, which is based on hybridization of a magnetic nanocrystal with a specific aptamer for specific detection of the angiogenic vasculature of glioblastoma via magnetic resonance (MR) imaging. The magnetic nanocrystal imaging core was synthesi...

Journal: :International Journal of Cardiology 2021

Abstract Cardiovascular magnetic resonance (MR) is a multiparametric, non-ionizing, non-invasive imaging technique, which represents the gold standard to study cardiac anatomy, function and tissue characterization. Faced with wide range of clinical application, in this review we aim provide comprehensive guide for clinicians about MR safety, contraindications image quality. Starting fr...

Chondrosarcoma is a mesenchymal tumor composed of tumor cells producing cartilage. It is more common in older age and often affects the axial skeleton. We report a rare case of chondrosarcoma mimicking a sellar and suprasellar mass with parasellar extension. A 40 yr woman presented with decreasing visual acuity and headache. Magnetic resonance (MR) image revealed a cystic sellar and suprasellar...

Journal: :Cellular & molecular biology letters 2002
Tadej Kokalj Peter Jevnikar Igor Sersa

Magnetic Resonance (MR) microscopy is a noninvasive tool that enables high resolution imaging of water concentration in non-magnetic materials. In this study, water migration in a dense porous material (dental cement) was monitored by 1D MR microscopy. The measured concentration profiles were later analyzed via three different migration models: an imbibition model, a diffusion model and a combi...

2008
Dick J Drost Peter Williamson Rob Nicolson

Magnetic Resonance Imaging (MRI) employs a strong static magnetic field, time changing magnetic fields and RF fields to produce diagnostic images whose grey levels represent the MR signal from hydrogen nuclei in tissue water molecules and hydrocarbon chains (fat). MRI can also been done with MR signals from hydrogen nuclei attached to other molecules, for example, neurotransmitters (Glutamate a...

Journal: :Journal of the American College of Cardiology 2003
Anna S John Thorsten Dill Roland R Brandt Matthias Rau Wolfgang Ricken Georg Bachmann Christian W Hamm

OBJECTIVES The purpose of the present study was to evaluate whether magnetic resonance (MR) planimetry of the aortic valve area (AVA) may prove to be a reliable, non-invasive diagnostic tool in the assessment of aortic valve stenosis, and how the results compare with current diagnostic standards. BACKGROUND Current standard techniques for assessing the severity of aortic stenosis include tran...

2012
J. Přibil D. Gogola T. Dermek I. Frollo

Magnetic resonance imaging (MRI) is nowadays widely used in medicine for diagnostic imaging and in research studies. The modeling of the human vocal tract acoustics has recently attracted considerable interest. This paper describes the design, realization and first MR scan experiments with a new head probe coil for vocal tract imaging in the open-air MRI equipment working in a weak magnetic fie...

2013
A Allievi T Arichi

2 we have studied and characterized the somatosensory cerebral response of premature infants using functional magnetic resonance imaging (fMRI) and bespoke MR safe robotic interfaces.

Journal: :JPMA. The Journal of the Pakistan Medical Association 2012
Rohana Naqi Muhammad Azeemuddin Mirza Amanullah Beg

We describe a case demonstrating Magnetic Resonance (MR) imaging findings in association with Metronidazole (Flagyl) toxicity. MRI brain showed abnormal signal intensity involving dentate nuclei of cerebellum bilaterally symmetrical. The diagnosis of metronidazole toxicity was made by the MR imaging findings and supported clinically. In hospital, course of treatment drug was discontinued. Patie...

Abbas Aliaghaei, Amir Abdolmaleki, Fatemeh Shaerzadeh, Hojjat-allah Abbaszadeh, Reza Mastery Farahani, Seyed Kamran Ghoreishi, Seyyed Hossein Mirjavadi,

Introduction: Interhemispheric transmission of signal is done by corpus callosum (CC) as the largest fiber tract in brain. CC comprised 5 segments of rostrum, genu, body, isthmus, and splenium. Contradictory reports exist about sexual dimorphism of CC. We designed this study to assess probable sexual differences of CC and its different parts in men and women. Methods: We analyzed magnetic reso...

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