A kind of general mri phantom preparation method
A phantom and volume technology, applied in the fields of application, medical science, diagnosis, etc., can solve the problems of unclear ratio of required materials, change of solution concentration, complicated process, etc., to achieve a large adjustable range, simple operation, and time-consuming short effect
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Embodiment 1
[0026] Embodiment 1: normal myocardial phantom
[0027] Normal myocardial phantom T1 is 1174-1420ms; T2 is 39-58ms.
[0028] 1) Material
[0029] Nickel sulfate hexahydrate (NiSO 4 ·6H 2 O), agarose, pure water are production materials, measuring cylinder, beaker, stirring rod, electronic scale, microwave oven, ultrasonic oscillator are production tools, and centrifuge tubes are phantom moulds.
[0030] 2) Suppose T1=1280ms, T2=48ms
[0031] Substituting into formula (1) and formula (2), we can get
[0032]
[0033] The volume of water when preparing is 100mL, M NiSO4·6H2O =262.85, then bring into formula (3), formula (4) to obtain required agarose and nickel sulfate hexahydrate (NiSO 4 ·6H 2 The masses of O) are: 3.2929g and 14.538mg.
[0034] 3) Preparation of normal myocardial phantom
[0035] Take a graduated cylinder to measure 100ml of pure water, pour it into a beaker with an inner diameter of 10.5cm, a height of 16cm, and a capacity of 500mL; add 3.2929g of a...
Embodiment 2
[0037] Embodiment 2: myocardial edema phantom
[0038] Myocardial edema phantom T1 is 1520-1738ms; T2 is 65-80ms
[0039] 1) Material
[0040] Nickel sulfate hexahydrate (NiSO 4 ·6H 2 O), agarose, pure water are production materials, measuring cylinder, beaker, stirring rod, electronic scale, microwave oven, ultrasonic oscillator are production tools, and centrifuge tubes are phantom moulds.
[0041] 2) Suppose T1=1560ms, T2=68ms
[0042] Substituting into formula (1) (2) can get
[0043]
[0044] The volume of water when preparing is 100mL, M NiSO4·6H2O =262.85, then bring into formula (3), formula (4) to obtain required agarose and nickel sulfate hexahydrate (NiSO 4 ·6H 2 The quality of O) is: 2.2407g and 9.302mg
[0045] 3) Preparation of myocardial edema phantom
[0046] Take a graduated cylinder to measure 100ml of pure water, pour it into a beaker with an inner diameter of 10.5cm, a height of 16cm, and a capacity of 500mL; add 2.2407g of agarose, 9.302mg of n...
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