A Diffusion Weighted Imaging Method
A technology of diffusion weighted imaging and diffusion coefficient, which is applied in image analysis, image enhancement, image data processing, etc., can solve problems such as complex calculation methods, and achieve the effects of improving signal-to-noise ratio, reliability, and parameter estimation reliability
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[0034] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0035] Such as figure 1 As shown, the diffusion weighted imaging method of the present invention mainly includes:
[0036] S10. Using a magnetic resonance scanner to acquire multiple b-value DWI images of the subject. The random movement of water molecules in the medium is called diffusion. When the gradient magnetic field exists, the diffusion of water molecules will cause the dephasing of the transverse magnetization vector and cause the MR signal to decrease. DWI can observe the diffusion characteristics of water molecules. In order to increase the sensitivity of diffusion, it is necessary to apply a diffusion sensitive gradient. The applied diffusion sensitive gradient can be combined with spin echo (sp...
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