169. Study of 3D scan using fast spin echo on 0.5T MRI : Spinalcord imaging
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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Introduction: Fast Spin Echo (FSE) sequences are the workhorse of MR imaging due to their speed and robustness to image artifacts. However, due to T2 decay, the reconstructed image suffers from blurring which grows with increasing echo train length (ETL) [1]. These drawbacks hinder the use of 3D FSE for musculoskeletal imaging, as the image quality attainable in the allotted scan time is not cl...
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 کاملOptimized three-dimensional fast-spin-echo MRI.
Spin-echo-based acquisitions are the workhorse of clinical MRI because they provide a variety of useful image contrasts and are resistant to image artifacts from radio-frequency or static field inhomogeneity. Three-dimensional (3D) acquisitions provide datasets that can be retrospectively reformatted for viewing in freely selectable orientations, and are thus advantageous for evaluating the com...
متن کاملRapid field-cycling MRI using fast spin-echo.
PURPOSE Fast field-cycling MRI (FFC-MRI) is a technique that promises to expand upon the diagnostic capabilities of conventional MRI by allowing the main field, B0 , to be varied during a pulse sequence, thus allowing access to new types of endogenous contrast. However, this necessitates longer scan times, which can limit the technique's application to clinical research. In this paper, an adapt...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1994
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003325971