Method for calibrating the imaging sequence of diffusion coefficients and diffusion tensor imaging experiments - DWI, DTI, fMRI, DTI

摘要

a calibration sequence type diffusion mri diffusion imaging in the experiment carried out in ct mr, which method consists of the following steps: in a certain place fields of rf coils in the test space ct scan mr, placed successively anizotropowy phantom d yfuzji,to reduce diffusion in at least one direction along the axis of the main axis associated with the phantom, and which has tensor diffusion of previously known values, and after the anizotropowego phantom diffusion in a specific location, performs measurement t ensora diffusion, specifying for components tensora diffusion in the main axis,after the measurements for each of the sites was anizotropowy phantom obtained spatial distribution tensora diffusion phantom anizotropowego, whose value is a value przedkalibracyjna standard deviation.then on the basis of the spatial distribution of tensora diffusion is corrected parameters measurements tensora diffusion in order to reduce the standard deviation of the values pokalibracyjnej, less than the value przedkalibracyjnej.