185. The evaluation of K-space filter for fast spin echo method
نویسندگان
چکیده
منابع مشابه
Fast Spin Echo Imaging
In conventional spin echo (SE) imaging, the longitudinal magnetization (that is generated by the presence of the main magnetic field, B0) is tipped into the transverse plane using a radiofrequency (RF) pulse that tips the magnetization 90 degrees. Once in the transverse plane, the magnetization rotates, or precesses, around the axis of the main magnetic field. As the transverse magnetization pr...
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Imaging with T2-weighting is prescribed in nearly every diagnostic imaging protocol, owing to the fact that in many pathologic states, diseased tissue may be distinguished from normal tissue through apparent differences in T2. Conventional T2-weighted imaging carries with it a heavy time cost, however, as a relatively long time must be allowed between acquisitions in order to allow T1 recovery ...
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Introduction The FRFSE sequence is a modification to the standard FSE sequence in which additional RF pulses are used to accelerate recovery of longitudinal magnetization after the echo train is acquired. The sequence can provide enhanced fluid signal in the setting of short TR for joint imaging. We compared this sequence to standard FSE using a long TR for axial endorectal coil T2 weighted ima...
متن کاملInteractive fast spin-echo imaging.
It is shown that a spin-echo sequence may be used to acquire T(2)-weighted, high-resolution, high-SNR sections at quasi-real-time frame rates for interactive, diagnostic imaging. A single-shot fast spin-echo sequence was designed which employs driven equilibrium to realign transverse magnetization remaining at the final spin echo. Driven equilibrium is shown to improve T(2) contrast at a given ...
متن کاملcomparison of maximum signal intensity of magnevist contrast agent in modified t1 weighted spin echo, t1 weighted fast spin echo and t1 weighted gradient echo sequences
background: nowadays mri examinations have been widely used in clinical applications for many diagnoses. the use of contrast agent in mri improves lesion detection and characterization and causes more accurate diagnosis. objectives: the aim of this study was comparing to optimal dose of magnevist contrast agent in modified t1w se (spin echo), t1w fse (fast spin echo) and t1w gre (gradient ech...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1994
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003325987