单能量去金属伪影技术在脑动脉瘤术后中的应用价值

doi:DOI:10.12117/jccmi.2018.12.004

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Objective: To evaluate the effect of a single-energy metal artifact reduction(SEMAR) technique for metallic implantation materials artifacts reduction and perfusion parameters in brain imaging. Methods: Computed tomography angiography(CTA) and CT perfusion were performed on 55 patients with implanted metallic materials in the brain. All CT examinations were performed on a 320-row CT scanner. No-SEMAR images were reconstructed with iterative reconstruction alone, and SEMAR images were reconstructed with iterative reconstruction plus the SEMAR algorithm. Noise(N-measured on the image with the most pronounced artifact), contrast-to-noise ratio(CNR), artifact index(AI), maximum diameter of artifact, image quality score, and cerebral perfusion parameters were compared between the two groups. Two radiologists visually evaluated the metallic artifacts using a four-point scale and a double blind method. Results: Compared with No-SEMAR images, noise, artifact diameter, and artifact index were reduced significantly after images were reconstructed using the SEMAR algorithm(P<0.01). The subjective image quality score and contrast-to-noise ratio increased significantly(P<0.01). The perfusion parameters(blood flow, blood volume, and mean transit time) obtained between the No-SEMAR and SEMAR groups exhibited linear correlation(P<0.01). Conclusion: The SEMAR algorithm significantly reduces artifact from implanted metallic materials in the brain and can potentially increase CT image quality without influencing cerebral blood perfusion parameters.

Key words： Intracranial aneurysm Tomography, X-ray computed

Received: 31 December 2017

PACS:	Ｒ739.41
	Ｒ814.42

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	RAN Yan-yong1
	PAN Yu-ning2
	CHEN Zhao-qian2
	HUANG Qiu-li2

Cite this article:

RAN Yan-yong1,PAN Yu-ning2,CHEN Zhao-qian2, et al. The application value of single energy metal artifact reduction technique in the follow-up of postoperative patients with intracranial aneurysms[J]. JOURNAL OF CHINA MEDICAL IMAGING, 2018, 29(12): 852-856.

URL:

http://www.jccmi.com.cn/EN/DOI:10.12117/jccmi.2018.12.004 OR http://www.jccmi.com.cn/EN/Y2018/V29/I12/852

[1]Shapiro M, Ollenschleger MD, Baccin C, et al. Foreign body emboli following cerebrovascular interventions: clinical, radiographic, and histopathologic features[J]. AJNR, 2015, 36(11): 2121-2126. [2]沈健康. 颅内动脉瘤手术治疗的现状和前景[J]. 中华神经外科学杂志，2005，21（11）：641-642. [3]曹永杰，周俊，姜楠. 双源CT双能量成像技术在骨关节金属内固定术后的应用[J]. 中国临床医学影像杂志，2015，26（2）：143-145. [4]Fang J, Zhang D, Wilcox C, et al. Metal implants on CT: comparison of iterative reconstruction algorithms for reduction of metal artifacts with single energy and spectral CT scanning in a phantom model[J]. Abdom radiol(NY), 2017, 42(3): 742-748. [5]Sonoda A, Nitta N, Ushio N, et al. Evaluation of the quality of CT images acquired with the single energy metal artifact reduction(SEMAR) algorithm in patients with hip and dental prostheses and aneurysm embolization coils[J]. Jpn J Radiol, 2015, 33(11): 710-716. [6]Yasaka K, Maeda E, Hanaoka S, et al. Single-energy metal artifact reduction for helical computed tomography of the pelvis in patients with metal hip prostheses[J]. Jpn J Radiol, 2016, 34(9): 625-632. [7]唐启瑛，阎作勤，陆秀良，等. 320排CT去金属伪影在评价腰椎内固定术后情况的临床价值[J]. 实用放射学杂志，2015，31（11）：1824-1827. [8]童秋云，李瑞，陈伟建，等. 动脉瘤性蛛网膜下腔出血后周围脑实质CT灌注变化分析[J]. 中华神经外科杂志，2014，30（1）：50-55. [9]Morsbach F, Wurnig M, Kunz DM, et al. Metal artefact reduction from dental hardware in carotid CT angiography using iterative reconstructions[J]. Eur radiol, 2013, 23(10): 2687-2694. [10]Brook OR, Gourtsoyianni S, Brook A, et al. Spectral CT with metal artifacts reduction software for improvement of tumor visibility in the vicinity of gold fiducial markers[J]. Radiology, 2012, 263(3): 696-705. [11]Venema HW, den Heeten GJ. Subtraction helical CT angiography of intra- and extracranial vessels: technical considerations and preliminary experience—rediscovery of matched mask bone elimination？[J]. AJNR, 2003, 24(7): 1491-1492. [12]Korpics M, Surucu M, Mescioglu I, et al. Observer evaluation of a metal artifact reduction algorithm applied to head and neck cone beam computed tomographic images[J]. Int J Radiat Oncol Biol Phys, 2016, 96(4): 897-904. [13]Orrison WW, Snyder KV, Hopkins LN, et al. Whole-brain dynamic CT angiography and perfusion imaging[J]. Clin Radiol, 2011, 66(6): 566-574. [14]Meyer E, Raupach R, Lell M, et al. Normalized metal artifact reduction(NMAR) in computed tomography[J]. Med Phys, 2010, 37(10): 5482-5493. [15]Morsbach F, Bickelhaupt S, Wanner GA, et al. Reduction of metal artifacts from hip prostheses on CT images of the pelvis: value of iterative reconstructions[J]. Radiology, 2013, 268(1): 237-244. [16]Kidoh M, Utsunomiya D, Ikeda O, et al. Reduction of metallic coil artefacts in computed tomography body imaging: effects of a new single-energy metal artefact reduction algorithm[J]. Eur Radiol, 2016, 26(5): 1378-1386. [17]惠萍，王新江，崔志鹏，等. CT能谱成像在消除金属移植物伪影中的应用价值[J]. 中华放射学杂志，2011，45（8）：740-742. [18]潘昌杰，钱农，薛跃君，等. 双能量单能谱成像技术在骨折金属固定术后的应用[J]. 中华放射学杂志，2011，45（5）：496-499.