Chemical ShiftWhat is meant by a chemical shift? The resonance frequency of a particular nucleus is determined not by the strength of the externally applied magnetic field (Bo), but by the local field (Bloc) experienced by the nucleus at the atomic level. All ¹H nuclei within a patient ...
Chemical-shift imaging is a lipid-sensitive magnetic resonance imaging (MRI) technique that exploits the resonance frequency differences of fat and water. From: Clinical Imaging, 2016 About this pageSet alert Also in subject areas: Chemistry Immunology and Microbiology Materials ScienceShow moreDiscover...
MRI Resources Spine MRI-Services and Supplies-Safety Training-MR Myelography-Stimulator pool-Cochlear Implant Chemical Shift Spatial Offset Imageartifactof apparent spatial offset of regions with different chemical shifts along the direction of thefrequency encodinggradient; a similar effect may be found in...
Chemical shift artefact (of the firstkind, which is what this is) CAN also occur in the phase encoding direction in echo-planar imaging (EPI). But as a rule of thumb, its a frequency encoding direction only phenomenon.To understand why it doesn’t occur in thephase encoding direction in ...
(unlike chemical shift artifact of the first kind that is seen in spin echo imaging). Additionally, since this 2nd type of artifact is due to a phase-cancellation effect, it is not limited to the frequency-encode direction (as is the chemical-shift artifact of the first kind), but may ...
Metal Complexes as MRI Contrast Enhancement Agents Hydration number and Gd–H distance The hydration state of lanthanide(III) chelates can be assessed by different experimental techniques. Luminescence studies are widely used for Eu3+and Tb3+chelates.30–3217ONMRchemical shift measurementsin solution ...
1.An Experimental Study on in Vitro Chemical-Shift Opposed-Phased Imaging Phantom;MRI化学位移同、反相位成像的体外实验模型研究 2.Study on Group Electronegat iv ity I Chemical Shift and Group Electronegativity基团电负性研究Ⅰ——化学位移与基团电负性 3.Influence of Substituent Effects on the ~(13)C ...
Theoretical or Mathematical, Experimental/ biochemistry biomedical MRI bone cardiology chemical shift data acquisition phosphorus sodium/ ultrashort TE chemical shift imaging species imaging short T 2 k-space point time delays free induction decay acquisitions transmit switching receive switching echo time sig...
20. A magnetic resonance imaging (MRI) system comprising: a static magnet for producing a magnetic field along a predetermined axis relative to at least a portion of a subject in an examination region, the subject comprising two chemical species having a chemical shift difference in resonant frequ...
Chemical-shift MR imaging of acetic acid during MR-guided percutaneous chemical ablation therapy: experimental study; 化学位移成像监控MR引导乙酸注射治疗兔VX2肿瘤的实验研究 3. An Experimental Study on in Vitro Chemical-Shift Opposed-Phased Imaging Phantom; MRI化学位移同、反相位成像的体外实验模型研究...