NMR Pulse Sequence: Heteronuclear Spin Echo
Asymmetric appearance of intracranial vessels on routine spin echo MR images: a pulse sequence dependent phenomenon
... Methods and Results: U s ing a normal imaging sequence in which the default directions of the frequency and phas e axes were horizontal and vertical , respectively, d[r] ...
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Comparison of spin echo MR pulse sequences for imaging of the brain
... 2) C/N 5 SI tissue1 2SI tissue2 /noise C/N was defined such that positive values resulted for the conventional spin-echo technique. Statistical analysis was applied to the results of the visual and ...
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Carbon, Deuterium and Heteronuclear NMR using Topspin
... John Decatur version 7.2 06/05/2014 Shown here are the standard experiments using different decoupling modes and the Bruker pulse sequence. A filled rectangle indicates the 1H decoupler is on. When the ...
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Comparison of gradient recalled echo and T2 weighted spin echo pulse sequences in intramedullary spinal lesions
... T2-weighted SE imaging has become the method of choic e in the evaluation of intramedullary spinal cord lesions. Th e excellent sensitivity of this pulse sequence has allowed s[r] ...
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Applications of pulsed gradient spin-echo NMR diffusion measurements to solution dynamics and organization
... the spin echo attenuation to the dynamics of an exchanging two-site system has been presented by Kärger and co-workers ...gradient pulse limit and it is assumed that the exchanging species undergoes ...
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Simultaneously Enhancing Spectral Resolution and Sensitivity in Heteronuclear Correlation NMR Spectroscopy
... shift heteronuclear single quantum correlation (HSQC) spectra, in which real-time homodecoupling using the BIRD pulse sequence element [1] leads to the first simultaneous resolution and signal ...
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Multidimensional and heteronuclear NMR investigations of oligosaccharides in the free and protein bound states
... the pulse sequence and phase cycling used, however a number of key points are shared by all multidimensional ...a sequence of pulses to generate the desired coherences, which then evolve under a free ...
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Rotational-Echo, Double-Resonance NMR
... the pulse sequence shown in Figure 2 ...-spin pulse is a composite π /2 pulse (instead of a π pulse) has been shown to provide good interatomic distances even for rigid ...
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Causality and Intervention in the Spin-Echo Experiments
... Carr-Purcell-Meiboon-Gill sequence of pulses has been widely applied in medicine for producing images of body structures in order to detect brain tumors, osteoporosis, heart diseases, ...
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A robust pulse sequence for the determination of small homonuclear dipolar couplings in magic angle spinning NMR
... 13 C site and one 13 C nucleus in natural abundance. These peaks disappeared at short double-quantum recoupling times. Fig. 4a shows experimental double- quantum-filtered signal amplitudes for [1,4- 13 C 2 ]-fuma- rate, ...
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MRI Pulse Sequence Optimization
... 2D/3D, pulse sequence (spin echo, gradient echo, fast spin echo, echo-planar-imaging etc), TE, TR, flip-angle, echo-train- length, receive bandwidth (rBW), ...
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Accuracy of Postcontrast 3D Turbo Spin Echo MR Sequence for the Detection of Enhanced Inflammatory Lesions in Patients with Multiple Sclerosis
... DIR sequence, which is not a standard pulse sequence for clinical ...DIR sequence may have further improved the detection of cortical and brain stem MS lesions as previously ...TSE ...
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Multidimensional heteronuclear NMR spectroscopy of high molecular weight proteins in solution : Application to a bacterial dimethylarginine dimethylaminohydrolase
... multidimensional heteronuclear NMR experiments that correlate protein backbone and ^^N nuclei are based on through-bond transfer of antiphase coherence using INEPT style pulse elements (such ...
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The diagnosis of herniated intervertebral disks with MR imaging: a comparison of gradient refocused echo and spin echo pulse sequences
... Another type of prolapsed disk demonstrated slight protru- sion of the nucleus pulposus with minimal disruption of the outer anulus fibrosus.. An extruded disk , on the [r] ...
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Cardiac T2 mapping using a fast gradient echo spin echo sequence first in vitro and in vivo experience
... GraSE sequence at ...stimulated echo pathways that cause the signal to decay with a mixture of T1 and T2 contributions, and the sensitivity to cardiac ...
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MR of the head and neck: comparison of fast spin echo and conventional spin echo sequences
... Other lesions surrounded by fat did not have decreased conspic uousness on fast spin - echo sequences ; those lesions with intermediate signals on long-TR sequences , especia[r] ...
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The added gradient echo pulse sequence technique: application to imaging of fluid in the temporomandibular joint
... Fig. Thus the AGE image is seen to show fluid more like a T2- weighted sequence, an observation that is some- what surprising based upon its T1-weighting with the phantom. [r] ...
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Highly Repeatable Dissolution Dynamic Nuclear Polarization for Heteronuclear NMR Metabolomics
... etc. NMR and MS are the most commonly used analytical methods in the field of metabolomics as tens to hundreds of metabolites can be identified in a single experiment 2 ...by NMR, and the identification of ...
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Comparison of lesion enhancement on spin echo and gradient echo images
... higher percent contrast (P < .05) and greater contrast to noise (P < .03) than either gradient-echo sequence for these small intraaxial lesions without edema.. For[r] ...
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Fat suppressed MR of the orbit and cavernous sinus: comparison of fast spin echo and conventional spin echo
... Detection of several normal anatomic structures of the peri- cavernous region was s ignifi cantly improved with non-fat-suppressed fast spin-echo over fat- suppressed fast [r] ...
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