O-MAR技术在颅内动脉瘤栓塞术后CTA中的应用

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摘要目的：探讨O-MAR技术在颅内动脉瘤栓塞术后CTA中的临床应用价值。方法：收集25例颅内动脉瘤栓塞术后CTA检查的原始数据，分别采用常规FBP重建（A组）和FBP+O-MAR重建（B组）。采用Mann-Whitney U秩和检验主观比较O-MAR去除金属伪影的效果；采用配对样本t检验或Mann-Whitney U秩和检验比较两组的客观指标（伪影的长度、弹簧圈附近组织的CT值及噪声值）的差异。结果：B组的主观评分显著高于A组（U=0.00，P＜0.01）。B组较A组的伪影长度显著减短（分别为（15.4±3.2） mm和（38.8±7.1） mm，t=7.73，P＜0.01）、CT值增高更接近于正常组织（t=2.99，P＜0.05）、噪声值减低（分别为（35.1±12.5） HU和（137.5±58.3） HU，t=5.31，P＜0.01）。结论：O-MAR技术可有效地减少颅内动脉瘤弹簧圈栓塞术后CTA的金属伪影，纠正植入体周围的CT值，改善图像质量。

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	高思喆
	丁长伟
	郭文力
	洪阳

关键词 ：颅内动脉瘤；颅内栓塞；体层摄影术, X线计算机

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.

Key words： Intracranial aneurysm Intracranial embolism Tomography, X-ray computed

收稿日期: 2016-10-20

PACS:	Ｒ739.41
	Ｒ815
	Ｒ814.42

通讯作者: 丁长伟，中国医科大学附属盛京医院放射科，110004。E-mail：18940254003@163.com

作者简介: 高思喆（1982-），男，辽宁抚顺人，技师。E-mail：18940254598@189.cn

引用本文:

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.

链接本文:

http://www.jccmi.com.cn/CN/ 或 http://www.jccmi.com.cn/CN/Y2017/V28/I6/391

[1]马骏，刘宏毅，常义，等. 破裂脑动脉瘤的早期治疗—血管内介入与内窥镜辅助下瘤颈夹闭[J]．临床神经外科杂志，2007，4（3）：105-107.
[2]Tomandl BF, Hammen T, Klotz E, et al. Bone-subtraction CT angiography for the evaluation of intracranial aneurysms[J]． Am J Neuroradiol, 2006, 27(1): 55-59.
[3]Hang Y, Zhang L, Zhu XＲ, et al. Reducing metal artifacts in conbeam CT images by preprocessing projection data[J]. Int J Radiat Oncol Biol Phys, 2007, 67(3): 924-932.
[4]卢小健，张鸿祺，张鹏，等. 弹簧圈栓塞颅内动脉瘤的远期MRA随访研究[J]. 南京医科大学学报：自然科学版，2010，30（2）：206-210.
[5]Piotin M, Spelle L, Mounayer C, et al． Intracranial aneurysms: treatment with bare platinum coils-aneurysm packing, complex coils, and angiographic recurrence[J]． Radiology, 2007, 243(2): 500-508.
[6]郭建新，冒平，牛刚，等. 3D-CTA、2D-DSA及3D-DSA对颅内动脉瘤诊断价值的对比研究[J]. 中国CT和MRI杂志，2011，9（5）：21-23.
[7]Lin XZ, Miao F, Li JY, et al． High-definition CT Gemstone spectral imaging of the brain: initial results of selecting optimal monochromatic image for beam-hardening artifacts and image noise reduction[J]． J Comput Assist Tomogr, 2011, 35(2): 294-297.
[8]Primak AN, Giraldo JC, Eusemann CD, et al. Dual-source dual-energy CT with additional tin filtration: Dose and image quality evaluation in phantoms and in vivo[J]. Am J Roentgenol, 2010, 195(5): 1164-1174.
[9]Hilgers G, Nuver T, Minken A. The CT number accuracy of a novel commercial metal artifact reduction algorithm for large orthopedic implants[J]. J Appl Clin Med Phys, 2014, 15(1): 4597.
[10]Li H, Noel C, Chen H, et al. Clinical evaluation of a commercial orthopedic metal artifact reduction tool for CT simulations in radiation therapy[J]. Med Phys, 2012, 39(12): 7507-7517.