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01-05-2016 | Computed Tomography

Reduction of metallic coil artefacts in computed tomography body imaging: effects of a new single-energy metal artefact reduction algorithm

Authors: Masafumi Kidoh, Daisuke Utsunomiya, Osamu Ikeda, Yoshitaka Tamura, Seitaro Oda, Yoshinori Funama, Hideaki Yuki, Takeshi Nakaura, Takayuki Kawano, Toshinori Hirai, Yasuyuki Yamashita

Published in: European Radiology | Issue 5/2016

Abstract

Objectives

We evaluated the effect of a single-energy metal artefact reduction (SEMAR) algorithm for metallic coil artefact reduction in body imaging.

Methods

Computed tomography angiography (CTA) was performed in 30 patients with metallic coils (10 men, 20 women; mean age, 67.9 ± 11 years). Non-SEMAR images were reconstructed with iterative reconstruction alone, and SEMAR images were reconstructed with the iterative reconstruction plus SEMAR algorithms. We compared image noise around metallic coils and the maximum diameters of artefacts from coils between the non-SEMAR and SEMAR images. Two radiologists visually evaluated the metallic coil artefacts utilizing a four-point scale: 1 = extensive; 2 = strong; 3 = mild; 4 = minimal artefacts.

Results

The image noise and maximum diameters of the artefacts of the SEMAR images were significantly lower than those of the non-SEMAR images (65.1 ± 33.0 HU vs. 29.7 ± 10.3 HU; 163.9 ± 54.8 mm vs. 10.3 ± 19.0 mm, respectively; P < 0.001). Better visual scores were obtained with the SEMAR technique (3.4 ± 0.6 vs. 1.0 ± 0.0, P < 0.001).

Conclusions

The SEMAR algorithm significantly reduced artefacts caused by metallic coils compared with the non-SEMAR algorithm. This technique can potentially increase CT performance for the evaluation of post-coil embolization complications.

Key Points

• The new algorithm involves a raw data- and image-based reconstruction technique.

• The new algorithm mitigates artefacts from metallic coils on body CT images.

• The new algorithm significantly reduced artefacts caused by metallic coils.

• The metal artefact reduction algorithm improves CT image quality after coil embolization.

Ikeda O, Tamura Y, Nakasone Y, Iryou Y, Yamashita Y (2008) Nonoperative management of unruptured visceral artery aneurysms: treatment by transcatheter coil embolization. J Vasc Surg 47:1212–1219CrossRefPubMed

Ikeda O, Nakasone Y, Tamura Y, Yamashita Y (2010) Endovascular management of visceral artery pseudoaneurysms: transcatheter coil embolization using the isolation technique. Cardiovasc Intervent Radiol 33:1128–1134CrossRefPubMed

Han YM, Song SK, Hwang HP et al (2013) Images in vascular medicine. Large congenital renal arteriovenous malformation treated with interlock coil embolization. Vasc Med 18:237–238CrossRefPubMed

Johnston SC, Zhao S, Dudley RA, Berman MF, Gress DR (2001) Treatment of unruptured cerebral aneurysms in California. Stroke 32:597–605CrossRefPubMed

Etezadi V, Gandhi RT, Benenati JF et al (2011) Endovascular treatment of visceral and renal artery aneurysms. J Vasc Interv Radiol 22:1246–1253CrossRefPubMed

Yasumoto T, Osuga K, Yamamoto H et al (2013) Long-term outcomes of coil packing for visceral aneurysms: correlation between packing density and incidence of coil compaction or recanalization. J Vasc Interv Radiol 24:1798–1807CrossRefPubMed

Gallas S, Januel AC, Pasco A et al (2009) Long-term follow-up of 1036 cerebral aneurysms treated by bare coils: a multicentric cohort treated between 1998 and 2003. AJNR Am J Neuroradiol 30:1986–1992CrossRefPubMed

Barrett JF, Keat N (2004) Artifacts in CT: recognition and avoidance. Radiographics 24:1679–1691CrossRefPubMed

Lell MM, Meyer E, Schmid M et al (2013) Frequency split metal artefact reduction in pelvic computed tomography. Eur Radiol 23:2137–2145CrossRefPubMed

10.

Morsbach F, Wurnig M, Kunz DM et al (2013) Metal artefact reduction from dental hardware in carotid CT angiography using iterative reconstructions. Eur Radiol 23:2687–2694CrossRefPubMed

11.

Funama Y, Taguchi K, Utsunomiya D et al (2015) A newly-developed metal artifact reduction algorithm improves the visibility of oral cavity lesions on 320-MDCT volume scans. Phys Med 31:66–71CrossRefPubMed

12.

Gondim Teixeira PA, Meyer JB, Baumann C et al (2014) Total hip prosthesis CT with single-energy projection-based metallic artifact reduction: impact on the visualization of specific periprosthetic soft tissue structures. Skelet Radiol 43:1237–1246CrossRef

13.

Lemmens C, Faul D, Nuyts J (2009) Suppression of metal artifacts in CT using a reconstruction procedure that combines MAP and projection completion. IEEE Trans Med Imaging 28:250–260CrossRefPubMed

14.

Geisel D, Gebauer B, Malinowski M, Stockmann M, Denecke T (2014) Comparison of CT and MRI artefacts from coils and vascular plugs used for portal vein embolization. Eur J Radiol 83:692–695CrossRefPubMed

15.

Kidoh M, Nakaura T, Nakamura S et al (2014) Reduction of dental metallic artefacts in CT: value of a newly developed algorithm for metal artefact reduction (O-MAR). Clin Radiol 69:e11–e16CrossRefPubMed

16.

Patel A, Weintraub JL, Nowakowski FS et al (2012) Single-center experience with elective transcatheter coil embolization of splenic artery aneurysms: technique and midterm follow-up. J Vasc Interv Radiol 23:893–899CrossRefPubMed

17.

Tekola BD, Arner DM, Behm BW (2013) Coil migration after transarterial coil embolization of a splenic artery pseudoaneurysm. Case Rep Gastroenterol 7:487–491CrossRefPubMedPubMedCentral

18.

Xu C, Verhaegen F, Laurendeau D, Enger SA, Beaulieu L (2011) An algorithm for efficient metal artifact reductions in permanent seed. Med Phys 38:47–56CrossRefPubMed

19.

Yu H, Zeng K, Bharkhada DK et al (2007) A segmentation-based method for metal artifact reduction. Acad Radiol 14:495–504CrossRefPubMedPubMedCentral

20.

Meyer E, Raupach R, Lell M, Schmidt B, Kachelriess M (2010) Normalized metal artifact reduction (NMAR) in computed tomography. Med Phys 37:5482–5493CrossRefPubMed

21.

Zhao S, Robertson DD, Wang G, Whiting B, Bae KT (2000) X-ray CT metal artifact reduction using wavelets: an application for imaging total hip prostheses. IEEE Trans Med Imaging 19:1238–1247CrossRefPubMed

22.

Jeong S, Kim SH, Hwang EJ, Shin CI, Han JK, Choi BI (2015) Usefulness of a metal artifact reduction algorithm for orthopedic implants in abdominal CT: phantom and clinical study results. AJR Am J Roentgenol 204:307–317CrossRefPubMed

23.

Hilgers G, Nuver T, Minken A (2014) The CT number accuracy of a novel commercial metal artifact reduction algorithm for large orthopedic implants. J Appl Clin Med Phys 15:4597PubMed

24.

Cheng PM, Romero M, Duddalwar VA (2014) Pulmonary pseudoemboli: a new artifact arising from a commercial metal artifact reduction algorithm for computed tomographic image reconstruction. J Comput Assist Tomogr 38:159–162CrossRefPubMed

25.

Li H, Noel C, Chen H et al (2012) Clinical evaluation of a commercial orthopedic metal artifact reduction tool for CT simulations in radiation therapy. Med Phys 39:7507–7517CrossRefPubMedPubMedCentral

26.

Guggenberger R, Winklhofer S, Osterhoff G et al (2012) Metallic artefact reduction with monoenergetic dual-energy CT: systematic ex vivo evaluation of posterior spinal fusion implants from various vendors and different spine levels. Eur Radiol 22:2357–2364CrossRefPubMed

27.

Pessis E, Campagna R, Sverzut JM et al (2013) Virtual monochromatic spectral imaging with fast kilovoltage switching: reduction of metal artifacts at CT. Radiographics 33:573–583CrossRefPubMed

28.

Kuchenbecker S, Faby S, Sawall S, Lell M, Kachelriess M (2015) Dual energy CT: how well can pseudo-monochromatic imaging reduce metal artifacts? Med Phys 42:1023–1036CrossRefPubMed

29.

Mamourian AC, Erkmen K, Pluta DJ (2008) Nonhelical acquisition CT angiogram after aneurysmal clipping: in vitro testing shows diminished artifact. AJNR Am J Neuroradiol 29:660–662CrossRefPubMed

Title: Reduction of metallic coil artefacts in computed tomography body imaging: effects of a new single-energy metal artefact reduction algorithm
Authors: Masafumi Kidoh
Daisuke Utsunomiya
Osamu Ikeda
Yoshitaka Tamura
Seitaro Oda
Yoshinori Funama
Hideaki Yuki
Takeshi Nakaura
Takayuki Kawano
Toshinori Hirai
Yasuyuki Yamashita
Publication date: 01-05-2016
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 5/2016
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-3950-6

At a glance: The STEP trials

Springer Medicine

Reduction of metallic coil artefacts in computed tomography body imaging: effects of a new single-energy metal artefact reduction algorithm

Abstract

Objectives

Methods

Results

Conclusions

Key Points

At a glance: The STEP trials

Springer Medicine

Abstract

Objectives

Methods

Results

Conclusions

Key Points

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