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[Combining diagnosis of IOFB and complications with multiple image-related methods]
Yu Zhu1, Xiao-fang Zhang, Yan-juan Sheng
1Department of Ophthalmology, First Teaching Hospital, Zhengzhou University, Zhengzhou, 450052, China. zhuyu6@yahoo.com.cn
Objective:
To evaluate the roles of diagnosing intraocular foreign body (IOFB) and their complications with CT, B-scan, X-ray film, MRI and UBM.
Methods:
Retrospective study of 103 clinic inpatient cases.
Results:
CT showing rate was 100% (103/103), CT scan could identify positions of high density IOFB, and define metal or non-metal. But for the size and shape of metal IOFB, the low density IOFB and complications of IOFB, the showing rate was lower. The total showing rate of B-scan for IOFB was 93.2%, but the discovering rates were only 68.7% and 66.7% for anterior segment and retrobulbar IOFB, but the showing rate was high to the vitreous opacity and retinal detachment caused by IOFB. X-ray film can clearly show the size and shape of the metal IOFB. MRI can show the low density IOFB and orbital FB. UBM has a good image for the low density and small IOFB at the anterior segment of globe.
Conclusion:
In the diagnosis and localization of IOFB, CT can well identify the IOFBs and show their relation with globe wall. B-scan can show even more clearly the relation between IOFB and globe wall, and complications of IOFB. X-ray film can distinctly reveal the size and shape of metal IOFB. MRI is good at showing low density, non-magnetic IOFB. UBM is only used in small or low density IOFB at the anterior segment of globe. The combination of multiple image-related methods can provide the required information on diagnosis and surgery design of IOFB.