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| Movement speed of water molecules in normal vitreous body at different ages: a preliminary study |
| WANG Wei, LI Ru-xue, ZHANG Nian |
| Department of Radiology, Wenzhou Chinese and Western Medicine Hospital, Wenzhou Zhejiang 325000, China |
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Abstract Objective: To understand the rule of velocity of water molecules in normal vitreous body at different ages, so as to find vitreous body abnormalities early, and to take early treatment or intervention. Methods: From July 2016 to December 2017, a total of 162 normal persons(324 eyes) were retrospectively analyzed. MRI data was divided into 9 groups according to age: A group 0~<10 years old, B group 10~<20 years old, C group 20~<30 years old, D group 30~<40 years old, E group 40~<50 years old, F group 50~<60 years old, G group 60~<70 years old, H group 70~<80 years old, I group 80~<90 years old. MR diffusion weighted imaging(Propeller-DWI) of two eyeballs and vitreous body in each age group was performed, and the apparent diffusion coefficient(ADC) value of the region of interest was measured. Results: Variance analysis showed that the ADC value of the vitreous body increased first and then decreased with age, and then tended to be stable. There was a statistically significant difference between the two groups(P=0.00). Conclusion: The movement speed of normal vitreous body water molecules rises first and then decreases with the increase of age, and then tends to be stable.
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Received: 31 December 2017
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