Man Seok Han , Dong Heon Cho , Hae Sool Yang , Kyung Soo Jin , Ik Soo Eo

The KIPS Transactions:PartB , Vol. 14, No. 6, pp. 431-436, Oct. 2007
10.3745/KIPSTB.2007.14.6.431,   PDF Download:

Abstract

Magnetic Resonance Imaging (MRI) has chemical shift phenomenon between fat and water, and the phenomenon has influence on structure enclosed by fat. Strong signals emitted from fat often generate false artefact, which reflects the importance of fat suppression techniques. There have been a number of researches on fat suppression techniques, but using fat suppression method alone in MRI can cause difficultproblems in diagnosis. This paper aims to study a fat suppression method by Chemical Shift Selective saturation (CHESS). This research describes the theoretical background and the experiment on water and fat phantom with MR instruments. In the experiment, CHESS pulse was designed by utilising Matlap program, and the pulse diagram was generated for the Pre-saturation process. The experiment using water and fat phantom was applied to C-spine, L-spine and Breast, and produced successful fat suppression results. This experiment has proved that the CHESSpulse fat suppression is a very helpful technique in diagnosing medical imaging. This method is a robust and useful technique for both clinical and basic investigators.. (Experiment with Chungnam national university hospital G.E 1.5T MR)

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