Application of spectral computed tomography for artifact removal after coil embolization of intracranial aneurysms

Na YU; Min YAN; Langzhou FU; Tao HU; Zhiyong LI; Lijuan ZHONG; Xinjie ZHOU; Daiquan ZHOU

doi:10.16016/j.1000-5404.202005207

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Application of spectral computed tomography for artifact removal after coil embolization of intracranial aneurysms

Clinical Medicine | 更新时间：2026-01-09

- Application of spectral computed tomography for artifact removal after coil embolization of intracranial aneurysms
- Journal of Third Military Medical University Vol. 42, Issue 20, Pages: 2069-2074(2020)
- 作者机构：
  
  401120 重庆，重庆医科大学附属第三医院放射科
- 作者简介：
- 基金信息：
- DOI：10.16016/j.1000-5404.202005207
  CLC： R743.9;R814.3;R814.42
- Received：22 May 2020，
  
  Revised：2020-07-03，
  
  Published：30 October 2020
- 稿件说明：
移动端阅览
Na YU, Min YAN, Langzhou FU, et al. Application of spectral computed tomography for artifact removal after coil embolization of intracranial aneurysms[J]. Journal of Third Military Medical University, 2020, 42(20): 2069-2074.
DOI：

Na YU, Min YAN, Langzhou FU, et al. Application of spectral computed tomography for artifact removal after coil embolization of intracranial aneurysms[J]. Journal of Third Military Medical University, 2020, 42(20): 2069-2074. DOI： 10.16016/j.1000-5404.202005207.

摘要

目的

通过CT单能量联合多伪影去除(multi-artifact reduction

MAR)技术的综合应用，以期有效去除颅内动脉瘤弹簧圈栓塞术后金属伪影并同时优化血管显示。

方法

收集本院2019年1-10月32例经导管颅内动脉瘤弹簧圈栓塞术后复查的患者，采用能谱成像(gemstone spectral imaging

GSI)联合MAR技术扫描采集图像，应用能谱单能量成像技术进行后处理，两位高年资介入医师对40~140 KeV的头颅血管后处理图像进行主观评分，间隔10个KeV能级为1个评分点，其中40 KeV和≥100 KeV图像质量较差被排除使用，在50~90 KeV区间，每间隔5 KeV重建9个能级的单能量图像，分别对图像的噪声值(standard deviation

SD)、信噪比(signal to noise ratio

SNR)、伪影指数(artifact index

AI)做客观统计学评价。

结果

进行组间SNR比较，其中65 KeV与70 KeV、75 KeV与80 KeV单能量能级比较，差异有统计学意义(

0.05)，其余组间比较差异无统计学意义；在60~65 KeV区间，AI指数较低、图像质量客观评价得分最高，提示该范围单能量能级图像对弹簧圈栓塞术后血管显示较佳。

结论

在60~65 KeV单能量区间，能谱CT加MAR扫描联合单能量技术对去除颅内动脉瘤弹簧圈栓塞术后金属伪影效果更好。

Abstract

Objective

To evaluate the effect of single-energy computed tomography (CT) combined with multi-artifact removal (MAR) for removing metal artifacts and optimizing blood vessel display in patients with coil embolization for intracranial aneurysms.

Methods

Thirty-two patients with intracranial aneurysms undergoing coil embolization under digital subtraction angiography (DSA) in our hospital between January and October in 2019 were enrolled in this study. After the surgery

the patients were scanned by gemstone spectral imaging (GSI) combined with MAR technique and post-processing with spectral monoenergy imaging technique. Two senior physicians scored the cranial vascular images acquired at a 10 KeV interval within 40 KeV to 140 KeV (the images acquired at 40 KeV and ≥100 KeV were excluded for poor quality). Nine single-energy images were reconstructed at 5 KeV intervals between 50 KeV and 90 KeV

and the noise level

signal-to-noise ratio (SNR) and artifact index (AI) of the images were evaluated.

Results

The SNR of the images tended to decrease with the increase of t

he energy level and showed significant differences between the energy levels 65 KeV and 70 KeV and between 75 KeV and 80 KeV (

0.05)

but not between the other energy levels. The images acquired at 60~65 KeV had low AI indexes and the highest objective score for image quality with optimal display the blood vessels after coil embolization.

Conclusion

Energy spectral CT within the range of 60~65 KeV combined with MAR can effectively remove metal artifacts in patients after coil embolization for intracranial aneurysms.

关键词

Keywords

references

IHN Y K, SHIN S H, BAIK S K, et al . Complications of endovascular treatment for intracranial aneurysms: Management and prevention[J ] . Interv Neuroradiol, 2018, 24(3): 237-245. DOI:10.1177/1591019918758493.

ZHU C, WANG X, EISENMENGER L, et al . Surveillance of unruptured intracranial saccular aneurysms using noncontrast 3D-black-blood MRI: comparison of 3D-TOF and contrast-enhanced MRA with 3D-DSA[J ] . AJNR Am J Neuroradiol, 2019, 40(6): 960-966. DOI: 10.3174/ajnr.A6080.

DUNDAR T T, ARALASMAK A, KITIŞ S, et al . Comparison of subtracted computed tomography from computed tomography perfusion and digital subtraction angiography in residue evaluation of treated intracranial aneurysms[J ] . World Neurosurg, 2019, 132: e746-e751. DOI: 10.1016/j.wneu.2019.08.028.

DUNET V, BERNASCONI M, HAJDU S D, et al . Impact of metal artifact reduction software on image quality of gemstone spectral imaging dual-energy cerebral CT angiography after intracranial aneurysm clipping[J ] . Neuroradiology, 2017, 59(9): 845-852. DOI: 10.1007/s00234-017-1871-6.

邓小林, 谢惠, 屈亚林, 等.能谱CT最佳单能量技术优化头颈部CTA图像质量的研究[J]. CT理论与应用研究, 2018, 27(6): 719-726. DOI:10.15953/j.1004-4140.2018.27.06.05.

DENG X L, XIE H, QU Y L, et al . Spectral CT with optimal monochromatic energy to improve CTA image quality of head and neck[J ] . Comput Tomogr Theory Appl, 2018, 27(6): 719-726. DOI:10.15953/j.1004-4140.2018.27.06.05.

张志伟, 吕发金, 曾勇明, 等.数字减影CT血管造影术在颅内动脉瘤中的临床应用[J].中国医学影像技术, 2007, 23(3): 450-452. DOI: 10.13929/j.1003-3289.2007.03.038.

ZHANG Z W, LYU F J, ZENG Y M, et al . Digital subtraction CT angiography for detection of intracranial aneurysms[J ] . Chin J Med Imaging Technol, 2007, 23(3): 450-452. DOI: 10.13929/j.1003-3289.2007.03.038.

SUN X, SHAO X D, CHEN H S. The value of energy spectral CT in the differential diagnosis between benign and malignant soft tissue masses of the musculoskeletal system[J]. Eur J Radiol, 2015, 84(6): 1105-1108. DOI:10.1016/j.ejrad.2015.02.028.

KAMIYA K, KUNIMATSU A, MORI H, et al . Preliminary report on virtual monochromatic spectral imaging with fast kVp switching dual energy head CT: comparable image quality to that of 120-kVp CT without increasing the radiation dose[J ] . Jpn J Radiol, 2013, 31(4): 293-298. DOI:10.1007/s11604-013-0185-9.

WINKLHOFER S, HINZPETER R, STOCKER D, et al . Combining monoenergetic extrapolations from dual-energy CT with iterative reconstructions: reduction of coil and clip artifacts from intracranial aneurysm therapy[J ] . Neuroradiology, 2018, 60(3): 281-291. DOI:10.1007/s00234-018-1981-9.

周新杰, 周代全, 钟丽娟, 等.能谱CT血管成像显示甲状腺供血动脉[J].中国医学影像技术, 2019, 35(10): 1565-1568. DOI:10.13929/j.1003-3289.201904078.

ZHOU X J, ZHOU D Q, ZHONG L J, et al . Dual-energy CT angiography in displaying thyroid feeding artery[J ] . Chin J Med Imaging Technol, 2019, 35(10): 1565-1568. DOI: 10.13929/j.1003-3289.201904078.

KUCHENBECKER S, FABY S, SAWALL S, et al . Dual energy CT: How well can pseudo-monochromatic imaging reduce metal artifacts?[J ] . Med Phys, 2015, 42(2): 1023-1036. DOI: 10.1118/1.4905106.

董鑫, 吕国士, 刘伟, 等.能谱CT的MONO成像联合MARs技术在颅内弹簧圈植入物伪影的应用研究[J].临床放射学杂志, 2016, 35(5): 794-798. DOI: 10.13437/j.cnki.jcr.2016. 05.037.

DONG X, LYU G S, LIU W, et al . Application effects of energy spectral CT mono imaging technology united with MARs in removing artifacts of intracranial spring coil implant[J ] . J Clin Radiol, 2016, 35(5): 794-798. DOI: 10.13437/j.cnki.jcr.2016. 05.037.

张客松, 徐晓麟, 韩青, 等.骨科去金属伪影技术在人工关节置换术CT检查中的应用[J].吉林大学学报(医学版), 2019, 45(1): 179-183, 220. DOI: 10.13481/j.1671-587x.20190134.

ZHANG K S, XU X L, HAN Q, et al . Application of orthopedic metal artifact reduction technology in CT examination of arthroplasty[J ] . J Jilin Univ(Med Ed), 2019, 45(1): 179-183, 220. DOI: 10.13481/j.1671-587x.20190134.

高思喆, 丁长伟, 郭文力, 等. 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. DOI:10.3969/j.issn.1008-1062.2017.06.003.

GAO S Z, DING C W, GUO W L, et al . Application of O-MAR technique in postoperative cTA of intracranial aneurysms embolization[J ] . J Chin Clin Med Imaging, 2017, 28(6): 391-393. DOI:10.3969/j.issn.1008-1062.2017.06.003.

KIDOH M, NAKAURA T, NAKAMURA S, et al . Reduction of dental metallic artefacts in CT: Value of a newly developed algorithm for metal artefact reduction (O-MAR)[J ] . Clin Radiol, 2014, 69(1): e11-e16. DOI:1 0.1016/j.crad.2013.08.008.

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