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| An investigation of tiny stony foreign body in rabbit vitreous body with MRI |
| ZHANG Xiao-nan, CHENG Jing-liang, ZHANG Hui-xia, WANG Fei-fei, WEN Bao-hong |
| Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China |
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Abstract Objective: To investigate the MRI features of stony foreign body in rabbit vitreous body by susceptibility weighted imaging(SWI) and conventional sequences. Methods: Forty healthy rabbits were involved in this study. Experimental group were ten rabbits. Selected stones, porcelain, coal, graphite four stone material as foreign body(maximum diameter were 0.2 mm) that were randomly and respectively implanted into 40 right rabbit’s vitreous body. Take the left rabbits vitreous body implanted as reference, all cases were underwent T1WI, T2WI, PDWI, 3D-DESS and SWI sequences examination in 2 hours. Highest magnification was 3D-DESS sequence of conventional sequence, the diameter of foreign bodies on T2WI sequence was closed to the actual diameter, highest magnification was mIP figure of SWI sequence. Results: All of 40 stony foreign bodies, the diagnosis rate of T1WI, T2WI, PDWI, 3D-DES sequences was 75%, 83%, 68%, 93%. The diagnosis rate of Mag, Pha, mIP, SWI figures was 88%, 88%, 78%, 88%. Conclusion: 3D-DESS and SWI were sensitive sequences for detecting tiny stony foreign body in vitreous bodies, for the amplification effect that could be used for the detection of foreign bodies as a complementary method for convention MRI.
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Received: 13 May 2016
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