Abstract：Objective: To evaluate the clinical value of O-MAR technique in postoperative CTA of intracranial aneurysms embolization. Methods: Twenty-five patients with postoperative CTA of intracranial aneurysm after embolization were collected. The raw data were reconstructed by FBP(group A) and FBP+O-MAR(group B) respectively. Mann-Whitney U test was used for comparisons of the effects of the metal artifacts reduction. t-test or Mann-Whitney U test was used for comparisons of objective evaluating indices(length of artifacts, CT value and image noise). Results: The subjective scores of group B were significant higher than group A(U=0.00, P＜0.01). There were significant differences between group B and group A in the length of artifacts((15.4±3.2) mm and (38.8±7.1) mm, t=7.73, P＜0.01）, CT value(t=2.99, P＜0.05) and image noise((35.1±12.5) HU and (137.5±58.3) HU, t=5.31, P＜0.01). Conclusion: O-MAR technique can reduce the metal artifacts effectively, correct CT values around the plants and improve the image quality.
高思喆，丁长伟，郭文力，洪 阳. O-MAR技术在颅内动脉瘤栓塞术后CTA中的应用[J]. 中国临床医学影像杂志, 2017, 28(6): 391-393.
GAO Si-zhe, DING Chang-wei, GUO Wen-li, HONG Yang. Application of O-MAR technique in postoperative CTA of intracranial aneurysms embolization. JOURNAL OF CHINA MEDICAL IMAGING, 2017, 28(6): 391-393.
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