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Proceedings Paper

Pixel profile improvement by frequency sweeping in burst imaging
Author(s): Yong Man Ro; Ho Kyung Kang; Kwan Jin Jung
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Paper Abstract

A pixel profile in the conventional burst sequence is so poor that excited area by burst sequence is a small portion of a pixel. This causes poor signal to noise ratio in burst image. In this paper, a frequency sweeping of RF pulse for burst imaging sequence is proposed to improve pixel profile. A burst pulse train is shaped by linear or nonlinear frequency sweeping function so that all the spins within a pixel are excited, thereby improving the signal to noise ratio. It also shows that the pixel profiles are dependent on how the frequency sweep is made. Computer simulations with Bloch equation and experimental results obtained using a 1.0 T NMR imaging system are presented.

Paper Details

Date Published: 28 May 1999
PDF: 8 pages
Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); doi: 10.1117/12.349558
Show Author Affiliations
Yong Man Ro, Information and Communication Univ. (South Korea)
Ho Kyung Kang, Information and Communication Univ. (South Korea)
Kwan Jin Jung, Medison Co. (South Korea)

Published in SPIE Proceedings Vol. 3659:
Medical Imaging 1999: Physics of Medical Imaging
John M. Boone; James T. Dobbins III, Editor(s)

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