DISC PHANTOM FOR CONTROLLING SPEED MEASUREMENT WITH PHASE-CONTRAST MAGNETIC RESONANCE IMAGING AND METHOD OF CONTROLLING MEASUREMENT OF LINEAR AND VOLUMETRIC SPEED OF PHANTOM Russian patent published in 2016 - IPC G01R33/20 

FIELD: medicine.

SUBSTANCE: invention can be used to control speed measurement during phase-contrast magnetic resonance tomography. Invention consists in that phantom represents a rotary with specified angular speed of disc, maximum overall dimensions of which 150×160 mm, and specific properties ensures connection of gadolinium GD-DTPA and fixation on shaft, which freely rotates in bushes fitted on brackets of part phantom are made of nonmagnetic plastic materials, on top of disk is non-slip material-latex, torque is transmitted to phantom via belt transmission with pulley positioned on axis of electric motor outside magnet at a distance 3.5 m long, pulley also coated with latex and transfers torque motor is connected to control unit. Method for phase-contrast magnetic resonance tomography is used to scan disk phantom rotating with known angular speed, on obtained image, using built-in software MR scanner are region of interest, value of linear velocity, for each of said areas is compared with preset flow plot linear velocities of experiment results calibration curve; calculating statistics evaluation accuracy of measuring linear and volume rate and determining weight coefficients that is used to determine fluid flow rate on investigated magnetic resonance tomography.

EFFECT: enabling designing of disk phantom based on agarose gel for control of measurement of linear and volume rate of movement of liquor.

2 cl, 8 dwg