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7 741 (0,271s)

Result

Spin-echo experiment with NMR spectra only partially narrowed by an insufficiently fast motion.

The spin-echo experiment on a spin system with only partial motional narrowing and an exponential field autocorrelation function is considered. The pattern of the intensity decrease in the echo spectra depends on t...

CD - Makromolekulární chemie

  • 2003
  • Jx
Result

Influence of Parameters on Image Quality Using Fast Spin Echo (FSE) and Comparison with the Conventional Method of Spin Echo (SE)

The article deals with the effects of parameters TE (echo time), ETL (echo train length) and ETE (effective echo time) in the FSE method. The images are compared in terms of signal / noise ratio (SNR). The importance of the...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2010
  • D
Result

The measurement of B0 and B1 fields inhomogeneity using the Spin Echo and Gradient The measurement of B0 and B1 fields inhomogeneity using the Spin Echo and Gradient Echo techniques

and spin echo acquisition techniques. A map of the spatial distribution of the B1 field...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2013
  • D
Result

Gradient magnetic field measuring method using MR technique with spin echo series

to be extended with spin echo and thus converted to the Instantaneous Frequency of Spin Echo (IFSE) method. The spin echo was created by using the p exciting pulse. The IFSE of Spin ...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2004
  • D
Result

Fast triple-spin-echo Dixon (FTSED) sequence for water and fat imaging

A number of 'Dixon' techniques based on fast spin echo (FSE) sequence have been fast triple-spin-echo Dixon (FTSED) technique suitable for ultrahighfieldMRI, in which three specific time shifts are introduced in th...

Radiology, nuclear medicine and medical imaging

  • 2017
  • Jimp
  • Link
Result

Use of Asymetric Spin Echo MRI Sequence for Magnetic Field Mapping

Magnetic susceptibility of materials that are used for body implants causes much distortion in MR images. The paper deals with mapping the magnetic field induction in the vicinity of these materials. A modified spin-echo method is u...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2006
  • D
Result

Measurement of Inhomogeneity in the B0 and B1 Fields Performed via the Spin-Echo and Gradient-Echo MR Imaging Techniques

The authors describe a method for the basic and RF field inhomogeneity estimation in NMR based on the measurement of T2 and T*2 .The method combines the gradient and spin echo acquisition techniques to differentiate the T2 and T*2 r...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2013
  • D
Result

Optimization of diffusion‐weighted single‐refocused spinecho EPI by reducing eddy‐current artifacts and shortening the echo time

of diffusion-weighted (DW) single-refocused spin-echo (srSE) data without intrinsic eddy. The rationale is that srSE sequences without ECC may yield shorter echo times (TE) and thus higher signal-to-noise ratios (SNR) than...

Clinical neurology

  • 2018
  • Jimp
  • Link
Result

SPIN ECHO SERIES MR TECHNIQUE FOR GRADIENT MEASUREMENT

For assessment of time-spatial properties of gradient fields in MR tomography a method of instantaneous frequency of spin echoes series (IFSES) has been developed and applied, enabling prolongation of measurement time of time charac...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2003
  • D
Result

Magnetic field mapping around metal implants using an asymmetric spin-echo sequence

Magnetic susceptibility of materials that are used for body implants causes much distortion in MR images. This paper deals with mapping the magnetic field induction in the vicinity of these materials. A modified spin-echo method is ...

FS - Lékařská zařízení, přístroje a vybavení

  • 2006
  • Jx
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